Instruction Manual: EZH and EZHSO Series Pressure

Instruction Manual
D103077X012
EZH and EZHSO Series
November 2017
EZH and EZHSO Series
Pressure Reducing Regulators
TYPE PRX/120
TYPE PRX/120-AP
Figure 2. PRX Series Pressure Reducing Pilots
Figure 1. EZH Series Pressure Reducing Regulator
!
WARNING
Failure to follow these instructions or to
properly install and maintain this equipment
could result in an explosion and/or fire
causing property damage and personal injury
or death.
Fisher™ regulators must be installed,
operated and maintained in accordance
with federal, state and local codes,
rules and regulations and Emerson
Process Management Regulator
Technologies, Inc. (Emerson) instructions.
If the regulator vents gas or a leak develops in
the system, service to the unit may be required.
Failure to correct trouble could result in a
hazardous condition.
Call a gas service person to service the unit.
Only a qualified person must install or service
the regulator.
Introduction
Scope of the Manual
This manual provides installation, startup and maintenance
instructions and parts ordering information for the EZH and
EZHSO Series pressure-reducing regulators, PRX Series
pilots and Type SA/2 pilot supply filter regulator. Information
on other equipment used with this regulator is found in
separate manuals.
Product Description
EZH Series (Spring-to-Close) and EZHSO Series (Springto-Open) regulators are accurate pilot-operated, pressurebalanced, soft-seated regulators. They are designed for use
in high pressure natural gas transmission/city gate stations,
large capacity distribution systems and power plant feeds.
They provide smooth and reliable operation, tight shutoff and
long life.
EZH and EZHSO Series
Specifications
Ratings and specifications for the EZH and EZHSO Series are listed in the Specifications section below. Specifications for
specific regulator constructions are stamped on a nameplate attached to either the main actuator or the pilot spring case.
Available Configurations
Type EZH: Spring-to-close pilot-operated pressure
reducing regulator for low to high outlet pressure
Type EZHSO: Spring-to-open pilot-operated pressure
reducing regulator for low to high outlet pressure
Type EZHOSX: Type EZH with a Type OS2 slam-shut
device for overpressure (OPSO) or overpressure and
underpressure (OPSO/UPSO) protection
Type EZHSO-OSX: Type EZHSO with a
Type OS2 slam-shut device for overpressure
(OPSO) or overpressure and underpressure (OPSO/
UPSO) protection
Body Sizes, End Connection Styles and
Pressure Ratings(1)
See Table 1
Maximum Inlet and Outlet (Casing) Pressures(1)
1500 psig / 103 bar
Maximum Emergency (Design Casing Pressure)(1)
1500 psig / 103 bar
Maximum Operating Differential Pressure(1)(4)
Main Valve: 1500 psid / 103 bar d
Pilot: Between loading pressure in pilot and loading
sense pressure: 1233 psid / 85.0 bar d
Outlet Pressure Ranges
See Table 2
Pressure Registration
External
Pilot Connections
1/4 NPT
Minimum Differential Pressures(1)(2)
SERIES
EZH
EZHSO
MAIN VALVE
BODY SIZE
MINIMUM DIFFERENTIAL
For 90% Capacity
For 100%
Capacity
NPS
DN
psid
bar d
psid
1
25
15.2
1.1
15.7
1.1
2
50
12.0
0.83
13.8
0.95
3
80
10.6
0.73
12.8
0.88
4
100
15.8
1.1
16.4
1.1
6, 8,
12 X 6
150, 200,
300 X 150
----
----
14.0
0.97
55
3.8
55
3.8
1
25
2
50
3
80
bar d
4
100
----
----
25.6
1.8
6, 8,
12 X 6
150, 200,
300 X 150
----
----
14.0
0.97
Temperature Capabilities(1)
Nitrile (NBR) Version: -20 to 180ºF / -29 to 82ºC
Fluorocarbon (FKM) Version: 0 to 180ºF /
-18 to 82ºC(3)
Polyurethane (PU) Version: NPS 1, 2, 6, 8 and
12 X 6 / DN 25, 50, 150, 200 and 300 X 150 Sizes:
-22 to 180ºF / -30 to 82ºC
NPS 3 to 4 / DN 80 to 100 Sizes:
-4 to 180ºF / -20 to 82ºC
Options
• Travel Indicator
• Whisper Trim™ Cage
1. The pressure/temperature limits in this Instructional Manual and any applicable standard or code limitation should not be exceeded.
2. When using a Type SA/2 pilot supply filter regulator, the differential pressure across the regulator must be at least 45 psid / 3.1 bar d for optimum regulator performance.
3. Types PRX and SA/2 Fluorocarbon (FKM) elastomer is limited to 0°F / -18°C.
4. Maximum Operating Differential Pressure is 1400 psid / 96.5 bar d for NPS 1 / DN 25 EZHSO Series.
Pilot Descriptions
The EZH and EZHSO Series pressure-reducing regulators
include a PRX Series pilot mounted on the main valve.
Type PRX/125-AP: Identical to the Type PRX/120-AP except
the restriction screw is removed. The Type PRX/125-AP
can only be used as the monitor override pilot on working
monitor applications.
Type PRX/120: Outlet pressure range of 14.5 to 435 psig /
1.00 to 30.0 bar. The Type PRX/120 can be used as the pilot
on single stage pressure reducing regulators, as the monitor
or working pilot in wide-open monitor systems or as the
working pilots in working monitor systems.
Type PRX/131: Set pressure range of 14.5 to 435 psig /
1.00 to 30.0 bar. The Type PRX/131 is used as a booster or
quick dump pilot to increase main valve closing speed on a
single stage pressure reducing regulator or on the monitor
regulator in wide-open monitor systems.
Type PRX/120-AP: Outlet pressure range of 435 to
1160 psig / 30.0 to 80.0 bar. The Type PRX/120-AP can
be used as the pilot on single stage pressure reducing
regulators, as the monitor or working pilot in wide-open
monitor systems or as the working pilots in working
monitor systems.
Pilot Supply Filter Regulator
Type PRX/125: Identical to the Type PRX/120 except
the restriction screw is removed. The Type PRX/125 can
only be used as the monitor override pilot on working
monitor applications.
2
The Type SA/2 pilot supply filter regulator provides a
constant supply pressure to the PRX Series pilot that
is approximately 45 psi / 3.1 bar over set pressure. The
Type SA/2 has an integral 5-micron filter.
EZH and EZHSO Series
Table 1. Main Valve Body Sizes, End Connection Styles and Body Ratings
MAIN VALVE BODY SIZE
MAIN VALVE BODY MATERIAL
NPS
DN
1 and 2
25 and 50
1, 2, 3, 4, 6,
12 X 6 and 8
25, 50, 80, 100,
150, 300 X 150
and 200
STRUCTURAL DESIGN RATING
END CONNECTION STYLE
LCC or WCC Steel
psig
bar
NPT or SWE
1500
103
CL150 RF
290
20.0
CL300 RF
750
51.7
CL600 RF or BWE
1500
103
Table 2. Outlet Pressure Ranges
OUTLET PRESSURE RANGE
TYPE
PRX/120
PRX/125
PRX/131
PRX/120-AP
PRX/125-AP
PRX/131-AP
AC (ACCURACY CLASS)
PILOT CONTROL SPRING INFORMATION
psig
bar
EZH Series
EZHSO Series
Spring Color
Part Number
14.5 to 26
23 to 44
41 to 80
73 to 123
1.00 to 1.8
1.6 to 3.0
2.8 to 5.5
5.0 to 8.5
2.5%
2.5%
Yellow
Green
Blue
Black
116 to 210
203 to 334
319 to 435
8.0 to 14.5
14.0 to 23.0
22.0 to 30.0
1%
2.5%
435 to 1160
30.0 to 80.0
1%
2.5%
Wire Diameter
Free Length
In.
cm
In.
cm
M0255240X12
M0255230X12
M0255180X12
M0255220X12
0.110
0.126
0.138
0.157
0.28
0.32
0.35
0.40
2.16
5.49
Silver
Gold
Aluminum
M0255210X12
M0255200X12
M0265860X12
0.177
0.197
0.236
0.45
0.50
0.60
2.16
2.00
2.00
5.49
5.10
5.10
Clear
M0273790X12
0.335
0.85
3.93
10.0
Table 3. Failure Mode Analysis
PART NAME
CONDITION
CAUSE
EFFECT
REGULATOR REACTION MODE
Type EZH
Type EZHSO
Close
Open
Filter
Filter Blocked /Clogged
Debris or aromatics
present in the gas
Decrease of supply
pressure gives decrease
of loading pressure
Pilot disk
Pilot cannot
be closed
Debris or aromatics
present, Sour gas
Increase
loading pressure
Open
Open
Pilot
lower diaphragm
Pilot cannot control
Debris or aromatics
present, Sour gas
Decrease
loading pressure
Close
Open
Pilot
upper diaphragm
Pilot cannot feed
the regulator
Debris or aromatics
present, Sour gas
Decrease
loading pressure
Close
Open
Regulator diaphragm
Not proper performance
of
the Loading
Pressure Chamber
Debris or aromatics
present, Sour gas
Balancing of Pressures
and charge or discharge
of the loading pressure
chamber
Close
Open
Moisture in the gas,
high-pressure drop
Type SA/2 loading upper
casing of regulator, Pilot
not supplying loading
pressure to
lower casing
Close
Close
Pilot
Frozen Pilot,
Type SA/2 working
3
H Pilot-Operated Regulator
EZH 25,
and EZHSO
In. / DN
50 or Series
80)
TYPE PRX
PILOT CONTROL
SPRING
PILOT UPPER
DIAPHRAGM
FILTER
TYPE SA2
PILOT BLEED
RESTRICTION
S
PILOT DISK
L
M
R
B
V
A
PILOT LOWER
DIAPHRAGM
REGULATOR
ACTUATOR
DIAPHRAGM
CHECK VALVE
ober 2015
TYPE EZH
Type
MAIN VALVE
DISK (PLUG)
Type EZHSO (Spring-to-Open) Pilot-Operated Regula
E0873_10/2015
INLET PRESSURE
TYPE PRX:
S - BLEED PORT
B - SUPPLY PORT
L - LOADING PORT
A - SENSING PORT
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
RE
RESSURE
URE
ESSURE
LOADING PRESSURE
PILOT SUPPLY PRESSURE
TYPE SA/2:
V - SENSING PORT
R - PILOT SUPPLY PORT
M - INLET PORT
Figure 3. Type EZH (Spring-to-Close) Operational Schematic
REGULATOR ACTUATOR
DIAPHRAGM
FILTER
d on all constructions.
PILOT BLEED
RESTRICTION
PILOT DISK
PILOT LOWER
DIAPHRAGM
TYPE PRX
S
R
TYPE SA/2
M
B
L
A
V
CHECK VALVE
M1011_10/2015-
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
PILOT SUPPLY PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
4
PILOT SUPPLY
PRESSURE
CHECK VALVE
: The check valve is not included on all constructions.
TYPE EZHSO
TYPE PRX:
S - BLEED PORT
B - SUPPLY PORT
L - LOADING PORT
A - SENSING PORT
MAIN VALVE
DISK (PLUG)
TYPE SA/2:
V - SENSING PORT
R - PILOT SUPPLY PORT
M - INLET PORT
Figure 4. Type EZHSO (Spring-to-Open) Operational Schematic
EZH and EZHSO Series
Principle of Operation
EZH Series – Spring-to-Close Version
CAUTION
The pilot-operated EZH Series
(Spring-to-Close version) will fail in close
position with a main valve diaphragm failure
or lack of pressure supply to the pilot (see
Table 3 for Failure Mode Analysis).
EZH Series (Figure 3) uses inlet pressure, which is reduced
through pilot operation to load the regulator actuator
diaphragm (lower chamber). Outlet pressure is supplied
to the regulator actuator diaphragm (upper chamber). This
pressure assists the main spring that tends to close the
regulator, and opposes loading pressure in the actuator.
Outlet pressure and also opposes the pilot control spring.
PRX Series pilot is supplied with pressure coming from
pre‑regulator Type SA/2, which reduces inlet pressure to the
value of outlet pressure plus approximately 45 psi / 3.1 bar.
When outlet pressure drops below the setting of the
pilot control spring, pilot control spring force on the pilot
diaphragm opens the pilot valve disk, providing additional
loading pressure to the lower chamber of the regulator
actuator diaphragm. This diaphragm loading pressure
opens the main valve disk, supplying the required flow to
the downstream system. Any excess loading pressure in the
lower chamber of the actuator diaphragm and pilot escapes
downstream through the bleed restriction in the pilot.
When the gas demand in the downstream system has
been satisfied, the outlet pressure increases. When outlet
pressure increases over the setting of the pilot spring, the
pilot valve disk will be closed, reducing loading pressure to
the lower chamber of the regulator actuator diaphragm; the
pressure in the upper case and the main spring will force the
regulator to close. The excess loading pressure acting under
the regulator actuator diaphragm and pilot bleeds to the
downstream system through a bleed restriction in the pilot.
A check valve, set at 75 psi / 5.2 bar, is installed between
outlet pressure and loading pressure impulse lines; this valve
is designed to protect the main valve diaphragm assembly
from excessive differential pressure during startup if incorrect
start up procedures are used. Do not exceed 75 psi / 5.2 bar
differential pressure between the outlet pressure and loading
pressure impulse lines.
EZHSO Series – Spring-to-Open Version
CAUTION
The pilot-operated EZHSO Series (Spring-toOpen version) will fail in open position with
a main valve diaphragm failure or lack of
pressure supply to the pilot (see Table 3 for
Failure Mode Analysis).
EZHSO Series (Figure 4) uses inlet pressure, which is
reduced through pilot operation to load the regulator
actuator diaphragm (lower chamber). Pilot supply pressure
is provided to the regulator actuator diaphragm (upper
chamber). This pressure opposes the main spring force
that tends to open the regulator, and opposes the loading
pressure. Outlet pressure opposes the pilot control spring.
PRX Series pilot is supplied with pressure coming from
pre‑regulator Type SA/2, which reduces inlet pressure to the
value of outlet pressure plus approximately 45 psi / 3.1 bar.
When outlet pressure drops below the setting of the
pilot control spring, pilot control spring force on the pilot
diaphragm opens the pilot valve disk, providing additional
loading pressure to the lower chamber of the regulator
actuator diaphragm. This diaphragm loading pressure
opens the main valve disk, supplying the required flow to
the downstream system. Any excess loading pressure in
the lower chamber of the regulator actuator diaphragm and
pilot escapes downstream through the bleed restriction in
the pilot.
When the gas demand in the downstream system has
been satisfied, the outlet pressure increases. When outlet
pressure increases over the setting of the pilot spring, the
pilot valve disk will be closed, reducing loading pressure to
the lower chamber of the regulator actuator diaphragm; the
pressure in the upper case will force the regulator to close.
The excess loading pressure acting under the regulator
actuator diaphragm and pilot bleeds to the downstream
system through a bleed restriction in the pilot.
A check valve, set at 75 psi / 5.2 bar, is installed between
pilot supply pressure and loading pressure impulse lines;
this valve is designed to protect the main valve diaphragm
assembly from excessive differential pressure during
incorrect start-up procedures.
Monitoring Systems
Monitoring regulation is overpressure protection by
containment; therefore, there is no relief valve to vent to the
atmosphere. When the working regulator fails to control the
pressure, a monitor regulator installed in series, sensing
the downstream pressure, goes into operation to maintain
the downstream pressure at a slightly higher than normal
set pressure. During an overpressure situation, monitoring
keeps the customer on line. Also, testing is relatively easy.
To perform a periodic test on a monitoring regulator, increase
the outlet set pressure of the working regulator and watch
the outlet pressure gauge to determine if the monitoring
regulator takes over at the appropriate outlet pressure.
Wide-Open Monitoring System (Figure 5)
There are two types of wide-open monitoring systems:
upstream and downstream. The difference between
upstream and downstream monitoring is that the functions
of the regulators are reversed. Systems can be changed
from upstream to downstream monitoring and vice-versa,
by simply reversing the setpoints of the two regulators.
5
EZH and EZHSO Series
The decision to use either an upstream or downstream
monitoring system is largely a matter of personal preference
or company policy.
In normal operation of a wide open configuration, the
working regulator controls the system’s outlet pressure. With
a higher outlet pressure setting, the monitor regulator senses
a pressure lower than its setpoint and tries to increase outlet
pressure by going wide open. If the working regulator fails,
the monitoring regulator assumes control and holds the
outlet pressure at its outlet pressure setting.
Figure 5 shows an upstream wide-open monitor Type EZH
(failed-close) and a downstream active regulator
Type EZHSO (failed-open). In this installation, if the
Type EZHSO regulator no longer controls downstream
pressure, it will remain open, causing the Type EZH
monitor regulator to take control of the downstream
pressure. Should the Type EZH fail, the monitor regulator
will go closed and protect the downstream system from an
overpressure condition.
Working Monitoring System (Figure 6)
In a working monitoring system, the upstream regulator
requires two pilots and it is always the monitoring regulator.
The additional pilot permits the monitoring regulator to act
as a series regulator to control an intermediate pressure
during normal operation. In this way, both units are always
operating and can be easily checked for proper operation.
See Installation section.
In normal operation, the working regulator controls the outlet
pressure of the system. The monitoring regulator’s working
pilot controls the intermediate pressure and the monitoring
pilot senses the system’s outlet pressure. If the working
regulator fails, the monitoring pilot will sense the increase in
outlet pressure and take control.
Working monitor installations require an EZH or
EZHSO Series main valve with a Type PRX/120 or
PRX/120-AP working pilot and a Type PRX/125 or
PRX/125-AP monitoring pilot for the upstream
regulator and an EZH or EZHSO Series with the
appropriate Type PRX/120 or PRX/120-AP pilot for the
downstream regulator.
Installation
!
WARNING
Personal injury or equipment damage, due
to bursting of pressure-containing parts may
result if this regulator is overpressured or
is installed where service conditions could
exceed the limits given in the Specification
section and on the appropriate nameplate
or where conditions exceed any rating of
the adjacent piping or piping connections.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices to prevent service conditions
from exceeding those limits. Also, be sure
6
the installation is in compliance with all
applicable codes and regulations.
Additionally, physical damage to the
regulator could break the pilot off the
main valve, causing personal injury
and property damage due to bursting of
pressure-containing parts. To avoid such
injury and damage, install the regulator in a
safe location.
All Installations
An EZH or EZHSO Series regulator bleeds no gas to
atmosphere during normal operation, making it suitable
for installation in pits and other enclosed locations without
elaborate venting systems. This regulator also can be
installed in pits subject to flooding by venting the pilot
spring case above the expected flood level so that the pilot
diaphragm is always exposed to atmospheric pressure.
1. Only personnel qualified through training and
experience should install, operate and maintain a
regulator. Before installation, make sure that there is no
damage to or debris in the regulator. Also, make sure
that all tubing and piping are clean and unobstructed.
CAUTION
Eyebolts are installed to aid in the handling
and installation of the Regulator Assembly
only. Always utilize both eyebolts and do not
attempt to lift more weight than the regulator
with these eyebolts.
2. Install the regulator so that the flow arrow on the main
valve matches the flow direction of process fluid through
the regulator. The EZH and EZHSO Series may be
installed in any position, but it is normally installed in a
horizontal pipeline with the pilot or pilots above the body.
3. Apply pipe compound to the external pipeline threads
before installing a regulator with threaded NPT end
connections. Use gaskets between pipeline and
regulator flanges when installing a regulator with
flanged end connections. When installing butt weld end
connections, remove trim before welding and make sure
to use approved welding practices. Use approved piping
procedures when installing the regulator.
!
WARNING
A regulator may vent some gas to the
atmosphere. In hazardous or flammable
gas service, vented gas may accumulate,
causing personal injury, death or property
damage due to fire or explosion. Install vent
line(s) from the regulator pilot(s) to a remote,
safe location away from air intakes or any
hazardous location. The end of the vent line
or stack opening must be pointed down and
protected against condensation or clogging.
Typ
Ty
r 2015
EZHMonitor
and EZHSO Series
ypes EZH and EZHSO Wide-Open
TYPE PRX
TYPE PRX
TYPE SA/2
S
TYPE SA/2
M
R
B
L
M
S
V
R
B
L
V
A
A
CHECK VALVE
CHECK
VALVE
TYPE EZH
TYPE EZHO
M1164_10/2015
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
INTERMEDIATE PRESSURE
PILOT SUPPLY PRESSURE
TYPE PRX
S - BLEED PORT
B - SUPPLY PORT
L - LOADING PORT
A - SENSING PORT
TYPE SA/2:
V - SENSING PORT
R - PILOT SUPPLY PORT
M - INLET PORT
Figure 5. Wide-Open Monitoring System Operational Schematics
INLET PRESSURE
OUTLET PRESSURE
4. PRESSURE
PRX Series pilots have a 1/4 NPT vent connection in the
outside diameter tubing. For the NPS 6 / DN 150 and
ATMOSPHERIC
spring
case.
The
pilot
vent
opening
should
be
pointed
larger sizes, connect the downstream control line from
LOADING PRESSURE
down. Protect the vent opening from condensation or
the port on the upper casing to a straight run of pipe
INTERMEDIATE PRESSURE
clogging. To remotely vent gas from the spring case,
6 to 10 pipe diameters from the regulator outlet using
PILOT SUPPLY PRESSURE
remove
the
screened
vent
and
connect
1/4
in.
/
6.4 mm
1/2‑inch / 12.7 mm or larger piping. If such a distance is
CHECK VALVE
piping or tubing to the spring case connection. The
not practical, connect the control line away from elbows,
check valve is not included
on all constructions.
piping
or tubing should vent to a safe location, have as
swages, nipples or any area where abnormal flow
few elbows as possible and have a screened vent that
velocities occur.
points down on its exhaust. Install the regulator and any
Note
remote vent piping or tubing so that the vent is pointed
down and protected from condensation, freezing or
The optimal location for the sense and
substances that may clog it.
bleed lines is between the regulator and the
downstream block valve. To prevent damage
to the pilot during startup, the sense and
CAUTION
bleed lines should be located on the same
side of the downstream block valve.
To avoid freeze-up because of pressure drop
6.
The
PRX Series pilot connections are 1/4 NPT.
and moisture in the gas, use anti-freeze
Connect
a downstream bleed line from the “S” port
practices, such as heating the supply gas or
on the PRX Series pilot with a straight run of pipe 6 to
adding a de-icing agent to the supply gas.
10 pipe diameters to the regulator outlet as shown in
Figures 3 and 4, using 3/8 in. / 9.5 mm or larger outside
5. The PRX Series pilot connections are 1/4 NPT. For
diameter tubing.
the NPS 1 to 4 / DN 25 to 100 EZH Series, connect a
downstream control (sense) line from the “A” port on
Note
the bottom of the PRX Series pilot to a straight run of
Separate
sensing
lines
must be used for the
pipe 6 to 10 pipe diameters from the regulator outlet as
“S”
and
the
“A”
ports.
shown in Figures 3 and 4, using 3/8 in. / 9.5 mm or larger
7
e EZH Working Monitor
EZH and EZHSO Series
TYPE PRX/120
TYPE PRX/125
TYPE PRX/120
TYPE SA/2
S
S
R
B
L
M
B
L
R
V
A
A
CHECK
VALVE
CHECK
VALVE
TYPE EZH
E0876_10/2015
M
S
B V
L
A
TYPE SA/2
TYPE EZH
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
INTERMEDIATE PRESSURE
PILOT SUPPLY PRESSURE
TYPE PRX
S - BLEED PORT
B - SUPPLY PORT
L - LOADING PORT
A - SENSING PORT
TYPE SA/2:
V - SENSING PORT
R - PILOT SUPPLY PORT
M - INLET PORT
PRESSURE
Figure 6. Working Monitoring System Operational Schematics
ET PRESSURE
SPHERIC PRESSURE
1. Follow the procedures in the All Installations section and
ING PRESSURE
CAUTION
then continue with step 2 of this section. The sense and
RMEDIATE PRESSURE
bleed control lines of both the upstream and downstream
T SUPPLY PRESSURE
pilots will be connected to the downstream piping (see
To prevent damage to the pilot during
K VALVE
Figure 5).
Startup, the sense and bleed lines should be
valve is not included on all constructions.
located on the same side of the downstream
2. Connect the pilot supply line for the downstream
block valve.
regulator to the outlet “R” port of the Type SA/2 pilot
7. Install hand valves in the downstream sense and bleed
lines if desired. If hand valves are installed, they should
be full flow valves, such as a full port ball valve. For
EZHSO Series installation, a vent valve downstream of
the regulator is needed. It should be installed directly
in the PRX Series pilot bleed line connection (line from
Port S to pipe). A full bore NPS 1/4 ball valve for the
vent line is preferred to provide sufficient flow.
8. For optional remote pneumatic loading of a
PRX Series pilot, make the spring case piping
connections just as they would be made for remote
venting in step 4.
Wide-Open Monitor Regulator
CAUTION
The working regulator must be rated for
the maximum allowable operating pressure
of the system because this will be its inlet
pressure if the monitoring regulator fails.
Also, the outlet pressure rating of the
monitoring pilot and any other components
that are exposed to the intermediate pressure
must be rated for full inlet pressure.
8
supply filter regulator.
Working Monitor Regulator
1. Follow the procedure in the All Installations section and
then continue with step 2 of this section. The sense
line of the upstream monitor pilot (from Port A on the
Type PRX/125) and the bleed (Port S) and sense lines
(Port A) of the downstream pilot will be connected to the
downstream piping (see Figure 6).
2. Connect an inlet supply line from the upstream piping
to the inlet “M” port of the downstream Type SA/2 pilot
supply filter regulator.
3. Connect a control (sense) line from the “A” port of
the upstream working Type PRX/120 pilot to the
intermediate pressure portion of piping, using 3/8 in. /
9.5 mm or larger outside diameter tubing.
4. Connect a downstream bleed line from the “S” port
of the upstream working Type PRX/120 pilot to the
intermediate pressure portion of piping, using 3/8 in. /
9.5 mm or larger outside diameter tubing.
EZH and EZHSO Series
Startup and Adjustment
Pre-startup Considerations
Each regulator is factory-set for the outlet pressure specified
on the order. If no setting was specified, outlet pressure was
factory-set at the mid-range of the pilot control spring. Before
beginning the start-up procedure in this section, make sure
the following conditions are in effect:
Adjusting the monitor regulator (Figure 6) is the same as
adjusting the main regulator. Monitor setpoints are set
slightly higher than the main regulator. The monitor pressure
setting should be adjusted so it is at minimum two times the
pilot accuracy band pressure above the working regulator
pressure setting.
PRX Series Pilot Restrictor and Damper Screw Adjustment
Note
• Block valves isolate the regulator
• Vent valves are closed
• A bypass, if any, is in operation
In all cases, check the pilot control spring setting to make
sure it is correct for the application.
CAUTION
Be sure to slowly introduce pressure into the
system to prevent downstream overpressure
due to potential rapid pressure increase.
Pressure gauges should always be used
to monitor downstream pressure during
Startup. Procedures used in putting this
regulator into operation must be planned
accordingly if the downstream system is
pressurized by another regulator or by a
manual bypass.
The Type PRX/125 (upstream monitor pilot in
working monitor installations) does not have
a restrictor screw.
The Damper and Restrictor screws on the PRX Series
pilot control the regulator’s proportional band (droop) and
speed of response. To tune, follow the steps outlined below
referencing Figure 13.
1. Start with the restrictor screw (R) 1 turn
counterclockwise from fully seated (turn restrictor fully
clockwise then 1 turn counterclockwise) and the damper
screw (D) fully counterclockwise.
2. Turn damper screw clockwise until desired performance
is achieved. This reduces the flow path of the damper.
If the damper becomes fully seated (no longer able to
turn clockwise) and the desired performance has not
been achieved, return the damper screw to the fully
counterclockwise position.
!
Note
When using a Type SA/2 pilot supply filter
regulator, the differential pressure across
the main regulator must be at least 45 psid /
3.1 bar d for optimum regulator performance.
The Type SA/2 can be removed if differential
pressure across the main regulator is less
than 45 psid / 3.1 bar d and inlet pressure
stays at or below 200 psig / 13.8 bar.
Pilot Adjustment
The adjustment of the regulators is performed by means of
the pilot adjustment screw, which varies the compression
of the control spring. Adjustment is performed while the
regulator is in operation with the aid of a pressure gauge
to monitor downstream pressure. The shutoff valve
downstream of the regulator must not be completely
closed, as it is necessary that a small quantity of gas
flows downstream to allow the outlet side to vent, when it
is necessary to lower the pressure. For PRX Series pilots
(Figure 13), loosen locknut (key 2) and turn the adjusting
screw into the spring case (clockwise) to increase and
out of the spring case (counterclockwise) to decrease the
downstream pressure. When the desired setpoint adjustment
is completed and verified, tighten the locknut to lock the
adjusting screw in position. No adjustment is needed to the
Type SA/2 pilot supply filter regulator.
WARNING
The damper screw should not be left in
the fully seated position, as it will lock the
regulator in last position which could cause
incorrect pressure regulation.
3. Turn the restrictor screw an additional turn
counterclockwise from fully seated. This increases
the flow path of the restrictor. If additional tuning is
required, repeat step 2. Follow this method until desired
performance is achieved.
Startup
1. Make sure all block valves, vent valves and
control line valve(s) are closed.
2. Back out the pilot adjusting screw(s).
3. Introduce upstream pressure by slowly opening
inlet valve.
4. EZHSO Series Monitor Installations and all
EZH Series Installations: Crack open the outlet block
valve or bypass valve to allow minimum flow.
For EZHSO Series Single Regulator Installation:
Vent pressure from bleed line until regulator closes and
then shut-off vent. A full bore NPS 1/4 ball valve for the
9
EZH and EZHSO Series
vent line is preferred. Slowly open downstream valve,
making sure that there is a constant sufficient pressure
drop across the regulator. If downstream pressure
climbs too close to upstream pressure (a minimum DP
of 55 psi / 3.8 bar must be guaranteed), the regulator
will again fully open. In this case, start-up procedure
needs to be repeated.
For a single regulator (Figure 3), set the pilot to
the desired outlet (control) pressure according to the
Pilot Adjustment procedure.
For a wide-open downstream monitor installation
(Figure 5), adjust the upstream working pilot until
intermediate pressure is higher than the desired setpoint
of the monitor pilot. Adjust the downstream monitoring pilot
to the desired monitoring takeover pressure. Reduce the
upstream pilot to the normal outlet pressure setting.
For a wide-open upstream monitor installation
(Figure 5), adjust the downstream working pilot to a setpoint
higher than the setpoint of the monitor pilot. Adjust the
upstream monitoring pilot to the desired monitoring takeover
pressure. Reduce the downstream pilot to the normal outlet
pressure setting.
For a working monitor installation (Figure 6), turn out the
adjusting screw of the downstream pilot, removing spring
tension. Adjust the upstream working pilot to the desired
intermediate pressure setting. Turn out the adjusting screw
of the upstream monitor pilot (Type PRX/125), removing
tension. Turn in the adjusting screw of the downstream pilot.
Adjust the upstream monitor pilot to the desired setpoint.
Establish final desired downstream pressure by adjusting the
downstream pilot.
5. After adjusting the PRX Series pilot(s) to the desired
pressure setting(s), slowly open the downstream block
valve wide open.
6. Close the bypass valve, if used.
Shutdown
CAUTION
If the pilot bleed control line pressure is
shutdown first, the downstream system may
be subjected to full inlet pressure.
1. If the pilot setting must be changed, be sure to keep
some tension on the spring. This will prevent trapping inlet
pressure during blow down.
2. Slowly close the valves in the following order:
a. Inlet block valve
b. Outlet block valve
c. Control line valve(s), if used.
3. Open the vent valves to depressurize the system.
Maintenance
The regulator parts are subject to normal wear and must
be inspected periodically and replaced as necessary.
The frequency of inspection and replacement depends
on the severity of service conditions and on applicable
federal, state and local codes and regulations. Use Torque
Specifications (Table 4) for proper torque values.
!
WARNING
To avoid personal injury or property
damage from sudden release of pressure,
isolate the regulator from the pressure
system and release all pressure from the
pilot and main valve before performing
maintenance operations.
Use proper lifting techniques, when lifting
the upper and lower actuator casings
(keys 11 and 5) off the EZH or EZHSO Series
body (key 1). The actuator assembly weighs
more than 100 lbs / 45 kg.
CAUTION
Customer cannot use another type of eyebolt
in the regulator. Only Emerson parts can be
used to repair the unit.
Eyebolts are installed to aid in the handling
and installation of the Regulator Assembly
only. Do not attempt to lift more weight than
the regulator with these eyebolts.
Polyurethane (PU) Disk Conversion
To convert EZH and EZHSO Series units to a
Polyurethane (PU) disk from a Nitrile (NBR) or
Fluorocarbon (FKM) disk, the user will need to order three
parts; retainer (key 31), disk assembly (key 30) and seat
ring (key 2). For the NPS 4 / DN 100 Type EZHSO, the
Polyurethane (PU) sleeve assembly is also required. Please
contact your local Sales Office with any questions about
parts selection.
Main Valve and Actuator Maintenance
Disk Maintenance
NPS 1 through 3 / DN 25 through 80
(Refer to Figures 8 and 9)
1. Remove nuts (key 26).
2. Carefully lift the upper actuator casing and lower
actuator casing assembly (keys 11 and 5) off the
body (key 1).
3. For EZH Series: Remove the hex socket cap screws
(key 33) and lock washers (key 32). Lift off the disk
10
EZH and EZHSO Series
holder assembly (key 30) and disk retainer (key 31).
For EZHSO Series: Remove the hex socket cap
screw (key 154). Lift off the disk holder assembly
(key 30). Do not attempt to remove the sleeve
adaptor (key 27).
4. Remove the O-ring (key 29). Inspect the O-ring
for damage or wear and replace if necessary.
Lightly lubricate O-ring before placing in the sleeve
adaptor (key 27).
5. Remove the cage (key 3), seat ring (key 2) and O-ring
(key 34). Inspect the O-ring for damage or wear and
replace if necessary. Lightly lubricate O-ring before
placing in the body (key 1).
6. Set the seat ring (key 2) back in the body (key 1) with
the curved side down and the seat edge up. Place the
cage (key 3) on top of seat ring. The cage will engage
the step on the seat ring.
7. Place the disk holder assembly (key 30) and disk
retainer (key 31) on the sleeve adaptor (key 27).
8. For EZH Series: Insert the lock washers (key 32)
and hex socket cap screws (key 33) and tighten.
For EZHSO Series: Insert the hex socket cap screw
(key 154) and tighten.
9. Carefully lift the upper actuator casing and lower actuator
casing assembly (keys 11 and 5) and place on the body
(key 1). Secure with stud bolts and nuts (keys 24 and 26).
Disk Maintenance
NPS 4, 6, 8, 12 X 6 / DN 100, 150, 200 and
300 X 150 (Refer to Figures 8 and 9)
1. If present, remove travel indicator assembly by
unscrewing the travel indicator fitting (key 141), then pull
out the stem (key 139). Please see the Travel Indicator
Maintenance section for the proper maintenance
procedure. For EZHSO Series: Remove closing cap
(key 146), unscrew 2 nuts (key 151), and remove
washer (key 193).
2. Remove cap screws (key 77).
3. Carefully lift the cap (key 70) off of the upper actuator
casing (key 11).
4. Remove O-ring (key 75). Inspect the O-ring for damage
or wear and replace if necessary.
5. Remove the O-ring (key 69). Inspect the O-ring for
damage or wear and replace if necessary. Lubricate
O-ring before placing inside the cap (key 70).
6. Loosen captured screws (key 68) until free to spin.
7. For EZH Series: Fit eyebolt (key 35) into the upper
spring seat (key 73) threaded hole.
8. Carefully remove the sleeve assembly from the sleeve
guide (key 61) using the eyebolt (key 35).
Note
The sleeve assembly may be oriented
upside down for ease of maintenance, but
care should be taken not to drop small
components into the sleeve assembly.
9. Remove socket head cap screws (key 33) and lock
washers (key 32 on EZH Series and key 154 on
EZHSO Series.)
10. For EZH Series: Lift off the disk retainer (key 31) and
disk holder assembly (key 30). For EZHSO Series: Lift
off the disk holder assembly (key 30).
11. Remove the O-ring (key 29). Inspect the O-ring
for damage or wear and replace if necessary.
Lightly lubricate O-ring before placing in the sleeve
adaptor (key 27).
12. For EZH Series: Place disk holder assembly (key 30)
onto disk retainer (key 31). Place disk retainer
(key 31) with the disk holder assembly (key 30)
into sleeve adaptor (key 27) and align screw holes.
For EZHSO Series: Place disk holder assembly
(key 30) into sleeve adaptor (key 27) and align
screw holes.
13. Place lock washer (key 32) onto the screws (key 33).
14. For EZH Series: Screw together the disk retainer
assembly into the sleeve adaptor (key 27).
For EZHSO Series: Place on socket head cap screw
(key 154). Screw together the disk holder assembly
(key 30) into the sleeve adaptor (key 27).
15. Lubricate the sleeve (key 14).
16. Carefully insert the sleeve assembly into the sleeve
guide (key 61) utilizing eyebolt (key 35). Align sleeve
utilizing the socket hex cap screw (key 74) as a guide.
Note
The O-rings (key 9) may need to be removed
and stretched by hand in order for the sleeve
assembly to have sufficient clearance to
slide back into the sleeve guide.
17. Screw captured screws (key 68) to affix the sleeve
system. Place O-ring (key 69) on cap (key 70).
18. Remove eyebolt (key 35) from upper spring seat
(key 73) threaded hole.
19. Carefully place the cap (key 70) on the upper actuator
casing (key 11).
20. Lubricate cap screws (key 77) and attach cap (key 70)
to the upper casing using cap screws (key 77).
Note
Rotate the cap such that the outer holes for
sensing lines are in line with upper casing
holes for sensing lines: to validate the
alignment and before attaching cap, check
that travel indicator is aligned on the cap and
on the upper actuator casing.
11
EZH and EZHSO Series
Table 4. Torque Specifications
TORQUE SPECIFICATIONS AND TOOL RECOMMENDATIONS
Body Size
PART NAME
Hex Head Cap Screw
(key 6)
Allen Head Screw
(key 16)
Hex Head Cap Screw
(keys 21 and 39)
Stud Bolts
(key 24)
Hex Head Nut
(key 26)
Allen Head Screw
(key 33)
Allen Screws
(keys 68 and 74)
Hex Head Cap Screw
(key 77)
Hex Head Nut
(key 151)
Hex Head Nut
(key 152)
Hex Head Cap Screw
(key 154)
Hex Head Nut
(key 155)
Tool Size
Torque
Torque
Torque
Torque
15/16-in. or 24 mm
1-1/8-in. or 29 mm
19 mm Allen
50 to 60
70 to 95
140 to 155
374 to 414
N•m
68 to 81
68 to 81
95 to 129
190 to 210
507 to 561
4 mm
5 mm
5 mm
6 mm
6 mm
ft-lbs
4.2 to 5.8
4.2 to 5.8
4.2 to 5.8
8.3 to 9.6
17.7 to 19.8
N•m
24 to 27
5.6 to 7.9
5.6 to 7.9
5.6 to 7.9
11 to 13
Tool Size
19 mm
24 mm
32 mm
41 mm
41 mm
ft-lbs
50 to 55
250 to 270
280 to 310
483 to 497
N•m
68 to 75
655 to 675
ft-lbs
N•m
Torque
380 to 420
3/4-in.
1-1/8-in.
----
----
50 to 70
50 to 70
100 to 120
----
221 to 244
299 to 331
68 to 95
136 to 163
----
3/4-in. or 19 mm
1-1/4-in. or 32 mm
----
30 mm
ft-lbs
45 to 50
45 to 50
80 to 95
----
140 to 160
N•m
61 to 68
61 to 68
108 to 129
----
190 to 220
3 mm
4 mm
5 mm
5 mm
5 mm
ft-lbs
2.5 to 3.3
4.2 to 5
6.7 to 8.3
6.7 to 8.3
6.7 to 8.3
N•m
3.4 to 4.5
5.6 to 6.8
9 to 11
9 to 11
9 to 11
Tool Size
----
----
----
4 mm
4 mm
ft-lbs
----
----
----
3
3
N•m
----
----
----
4
4
Tool Size
----
----
----
20 mm
30 mm
ft-lbs
----
----
----
90 to 110
221 to 244
N•m
----
----
----
122 to 149
299 to 331
17 mm
17 mm
17 mm
17 mm
24 mm
ft-lbs
32
32
45
45
45
N•m
43
43
61
61
61
Tool Size
----
19 mm
19 mm
19 mm
24 mm
ft-lbs
----
40
60
45 to 50
45 to 50
N•m
----
54
81
61 to 68
61 to 68
3 mm
5 mm
6 mm
3 mm
----
ft-lbs
1.3
4.2
10
3.2
----
N•m
1.8
5.6
14
4.3
----
19 mm
----
----
----
----
ft-lbs
30
----
----
----
----
N•m
41
----
----
----
----
Tool Size
Torque
339 to 366
3/4-in.
68 to 95
Tool Size
Torque
130 to 150
---176 to 203
3/4-in. or 19 mm
Tool Size
Torque
NPS 6, 8, and 12 X 6 /
DN 150, 200 and 300 X 150
3/4-in. or 19 mm
Tool Size
Torque
NPS 4 / DN 100
50 to 60
Tool Size
Torque
NPS 3 / DN 80
13/16-in. or 21 mm
Tool Size
Torque
NPS 2 / DN 50
ft-lbs
Tool Size
Torque
NPS 1 / DN 25
21. Mount O-ring (key 75) on the space between the cap
(key 70) and the upper actuator casing (key 11).
22. Screw the eyebolts (key 35) on the cap (key 70).
23. For EZHSO Series: Place the washer (key 193) on
the stem (key 147). Assemble one nut (key 151) to the
stem (key 147) until the specified torque is achieved and
then install another nut (key 151) to lock the position of
stem. Screw on the closing cap (key 146). Mount O-ring
(key 75) on the cap (key 70).
24. If present, set the stem (key 139) through the casing
hole and tap it into the groove in the diaphragm plate
(key 18). Slide the travel indicator fitting (key 141) over
the stem and tighten to the cap (key 70).
Intermediate Flange O-ring Maintenance
NPS 1, 2, 3, 6, 8 and 12 X 6 / DN 25, 50,
80, 150, 200 and 300 X 150
1. Remove nuts (key 26).
2. Carefully lift the upper actuator casing and lower
actuator casing assemblies (keys 11 and 5) off the
body (key 1).
3. Remove cap screws (key 6).
4. Lift off intermediate flange (key 25).
5. Remove O-ring (key 7). Inspect the O-ring for damage
or wear and replace if necessary. Lightly lubricate O-ring
before placing in the body (key 1).
6. Place the intermediate flange (key 25) on the body,
make sure to position the stud bolt (key 24) holes
on the outsides of the body (key 1). Secure with cap
screws (key 6).
12
EZH and EZHSO Series
7. Carefully lift the upper actuator casing and lower
actuator casing assemblies (keys 11 and 5) and position
it in the body (key 1).
8. Screw in stud bolts and nuts (keys 24 and 26).
Actuator Assembly Maintenance
NPS 1 through 3 / DN 25 through 80
(Refer to Figures 8 and 9)
1. Make a mark on the upper actuator casing (key 11),
lower actuator casing (key 5), intermediate flange
(key 25) and body (key 1) to indicate proper alignment.
2. Remove travel indicator assembly (keys 138, 139, 140,
141, 142A or 142B, 143, 144, 145, 160 and 192), if
present, by loosening the travel indicator fitting (key 141)
and lifting out the travel indicator assembly. See the
Travel Indicator Maintenance section for the proper
maintenance procedure.
3. For EZH Series: Loosen out the hex nuts (key 23)
and remove the washers (key 22) and the cap screws
(key 21). Remove all the short bolts first, then evenly
remove the two long bolts (key 39), indicated with
(LB) on the head and brackets (key 35). Make sure to
balance the upper actuator casing while removing the
spring tension. Carefully lift the upper actuator casing
(key 11) off the lower actuator casing (key 5). Remove
spring (key 13). For EZHSO Series: Remove protective
cap (key 146). Loosen and remove hex nuts (key 151)
and washer (key 193). Remove cap screws (key 21),
washers (key 22) and hex nuts (key 23). Carefully lift
the upper actuator casing (key 11) off the lower actuator
casing (key 5).
4. Remove the socket head cap screws (key 16). Lift off
the diaphragm (key 20) and the inlet plate (key 18).
Remove O-rings (keys 15 and 17). Inspect the
diaphragm and O-rings for damage or wear and replace
if necessary.
5. Inspect the upper actuator casing (key 11), O-ring
(key 9), anti-friction split rings (key 8) and anti friction
ring (key 4) for damage or wear. If damaged, remove the
O-ring and split rings and replace with new parts. Lightly
lubricate the O-ring and split rings. Place the split rings
in the body first, then slide the O-ring between the split
rings. Lubricate and reinstall the anti-friction ring (key 4).
6. Remove hex nuts (key 26) from the stud bolts
(key 24). Lift off the lower actuator casing (key 5).
For EZH Series: Remove the hex socket cap screws
(key 33) and spring lock washers (key 32). Lift off
the disk holder assembly (key 30) and disk retainer
(key 31). For EZHSO Series: Remove the hex
socket cap screw (key 154). Lift off the disk holder
assembly (key 30).
7. Slide the sleeve (key 14) out of the lower actuator
casing (key 5) and slide the outlet plate (key 19) off of
the sleeve. Check the sleeve for scratches, burrs or
other damage and replace if necessary.
8. Inspect the lower actuator casing (key 5), O-rings
(keys 9 and 62), anti-friction split rings (key 8) and
anti‑friction ring (key 4) for damage or wear. If damaged,
remove the O-ring and split rings and replace with
new parts. Lightly lubricate the O-ring (key 9) and split
rings. Place the split rings in the body first, then slide
the O-ring (key 9) between the split rings. Lubricate
and mount O-ring (key 62) outside of the lower actuator
casing (key 5).
9. Slide the outlet plate (key 19) onto the sleeve (key 14)
and slide the sleeve into the lower actuator casing
(key 5). For EZH Series: Place the disk holder (key 30)
and disk retainer (key 31) on the sleeve adaptor
(key 27). Insert the spring lock washers (key 32)
and hex socket cap screws (key 33) and tighten.
For EZHSO Series: Place the disk holder assembly
(key 30) on the sleeve adaptor (key 27). Insert the hex
socket cap screw (key 154) and tighten.
10. Lightly lubricate the O-rings (keys 15 and 17) and the
inner and outer diaphragm (key 20) edges. Place the
inlet plate (key 18) and the diaphragm (key 20) on the
sleeve (key 14). Make sure O-rings (keys 15 and 17) are
correctly positioned. Insert and tighten the hex socket
cap screws (key 16).
Note
When tightening fasteners arranged in a
circular pattern, alternate the tightening
of each fastener with the fastener directly
across from it using a “star” criss-cross
pattern for five times, until proper specified
torque is achieved. Each time around, when
all screws are tightened to the required
torque, the diaphragm will compress a little
until the plates are in direct, metal-to-metal,
contact. It will take at least five times around
before this happens. Only then will the
applied torque on each screw remain at the
required value.
11. Carefully lift the lower actuator casing assembly (key 5)
and place on the body (key 1). Make sure to match up
the alignment marks. Secure with stud bolts and nuts
(keys 24 and 26).
12. For EZH Series: Lightly lubricate the spring (key 13)
and place on the inlet plate (key 18).
13. Carefully place the upper actuator casing (key 11)
on the lower actuator casing (key 5). Make sure to
match up the alignment marks. Insert the two long
bolts (key 39) 180° apart and away from flanges. Place
the washers (key 22), hex nuts (key 23) and brackets
(key 35) on the long bolts and evenly tighten. Using
proper bolting techniques, install remaining short bolts
(key 21), washers and hex nuts.
14. For EZHSO Series: Install washer (key 193), tighten
hex nuts (key 151) and install protective cap (key 146).
15. Place travel indicator assembly (keys 138, 139, 140,
141, 142A or 142B, 143, 144, 145, 160 and 192) in the
upper actuator casing (key 11), if present and tighten the
travel indicator fitting (key 141).
13
EZH and EZHSO Series
Actuator Assembly Maintenance
NPS 4, 6, 8, 12 X 6 / DN 100, 150,
200, 300 X 150 (Refer to Figures 8 and 9)
NPS 4 / DN 100 constructions, replace washer (key 67)
with new parts. Tighten cap screws (key 6). Screw
sleeve guide (key 61) into lower casing (key 5) utilizing
cap (key 70) or by using a crowbar.
1. If present, remove the travel indicator assembly
by unscrewing the travel indicator fitting (key 141),
then pull out the stem (key 139). Please see the
Travel Indicator Maintenance section for the proper
maintenance procedure. For EZHSO Series: Remove
closing cap (key 146), unscrew 2 nuts (key 151), and
washer (key 193).
12. Lubricate the sleeve (key 14) in the upper plate contact
area and assemble the diaphragm/plates assembly on
the sleeve assembly. Tighten screws (key 16) using
a “star” criss-cross pattern for five times until proper
specified torque is achieved.
2. Remove hex head cap screws (key 21), washers
(key 22) and hex nuts (key 23). Carefully lift the
upper actuator casing (key 11) off the lower actuator
casing (key 5). Inspect the upper actuator casing
(key 11), O-rings (key 9 for EZH Series and key 158
for EZHSO Series) and anti-friction rings (key 8 for
EZH Series and key 157 for EZHSO Series) for damage
or wear. If damaged, remove and replace with new
parts. Place the anti-friction rings in the body first, then
slide the O-ring between the anti-friction rings.
14. Lubricate lower casing (key 5) on the diaphragm
contact area.
3. Loosen captured screws (key 68) until free to spin.
Unscrew an eyebolt (key 35) from the cap and remove
the screws (key 77) to remove cap (key 70) from the
upper actuator casing (key 5). Attach an eyebolt to the
upper spring seat (key 73) and lift up and remove the
sleeve assembly (key 14). Lift off the diaphragm/plates
assembly. Remove O-ring (key 15) and replace it as
needed. Inspect diaphragm (key 20) for damage or
wear; remove screws (key 16), lift off inlet plate (key 18)
to replace diaphragm (key 20) and O-ring (key 17).
4. Align screw holes on the cap (key 70) to the sleeve
guide screws (key 66). Remove sleeve guide (key 61)
utilizing cap (key 70) to unscrew or by using a crowbar.
Inspect O-rings (keys 9, 64 and 153) for damage or
wear, replace anti-friction ring (key 8) and O-ring (key
9) if necessary. Unscrew the cap screws (key 6) and on
NPS 4 / DN 100 constructions, remove crush washers
(key 67). Lift off lower casing (key 5). On the NPS 4 /
DN 100 construction, inspect O-ring (keys 7 and 63) for
damage or wear. Replace if necessary.
5. Remove cage (key 78).
6. Remove seat ring (key 2). Inspect seat ring for damage
or wear. If damaged, replace with new parts.
7. Remove O-ring (key 34) from body (key 1). Inspect for
damage or wear. If damaged, replace with new parts.
On the NPS 8 and 12 X 6 / DN 200 and 300 X 150
constructions, the seat adaptor (key 197) and O-ring
(key 198) should also be inspected for damage and
replaced if damaged.
8. Lubricate O-ring (key 34) and replace into the body.
9. Place seat ring (key 2) on top of O-ring (key 34) in body
(key 1) with the curved side down and seat edge up.
10. Place cage (key 78) on the top of seat ring (key 2).
11. Place lower casing (key 5) on top of the body. On
14
13. Screw the captured screws (key 68) – already on the
sleeve – to fix the diaphragm/plates assembly on the
sleeve assembly. Tighten screws (key 68) using a “star”
criss-cross pattern for five times until proper specified
torque is achieved.
15. Carefully insert the sleeve assembly into the sleeve
guide (key 61) utilizing the eye-bolts (key 35) that fits in
the upper spring seat (key 73) threaded hole.
Note
The O-rings (key 9) may need to be removed
and stretched by hand in order for the sleeve
assembly to have sufficient clearance to
slide back into the sleeve guide.
16. Lubricate the diaphragm (key 20) on the upper casing
contact area.
17. Lubricate and mount the O-ring (key 69) on the cap
(key 70). Lubricate and mount O-rings (key 9) and
anti‑friction rings (key 8) inside the cap (key 70). For
EZHSO Series: lubricate and mount O-ring (key 153)
on the stem (key 147). Unscrew the eyebolts (key 35)
from the upper spring seat (key 73) and carefully place
the cap on the upper actuator casing (key 11). Align
the travel indicator hole on the cap (key 70) to the
upper actuator casing travel indicator hole. Lubricate
cap screws (key 77) and attach cap (key 70) to the
upper casing (key 11) using cap screws (key 77). Bag
diaphragm flat to lower actuator casing diaphragm
flange contact area. Carefully place the upper actuator
casing on the top of the lower actuator casing/trim
system using a stud to guide.
Note
Rotate the upper casing such that the outer
holes for sensing lines are perpendicular to
gas flow and outer holes of lower casing.
18. Lubricate threads on bolts (key 21).
19. Bolt together the upper and lower actuator casings
(keys 11 and 5) using cap screws (key 21), washers
(key 22) and hex nuts (key 23). Tighten cap screws
using a “star” criss-cross pattern for five times until
proper specified torque is achieved.
EZH and EZHSO Series
20. Mount O-ring (key 75) on the cap (key 70).
For EZHSO Series: Place the washer (key 193) on the
stem (key 147). Assemble one nut (key 151) to the stem
(key 147) until the specified torque is achieved and then
assemble another nut (key 151) to lock the position of
stem. Screw on the closing cap (key 146).
21. Screw the eyebolts (key 35) on the cap (key 70).
22. If present, set the stem (key 139) through the casing
hole and tap it into the groove in the diaphragm plate
(key 18). Slide the travel indicator fitting (key 141) over
the stem and tighten to the cap (key 70).
EZH Series Travel Indicator Maintenance
A new and improved travel indicator has been phased
in during 2013. The new version improves the O-ring
stem seal to minimize leakage and extend service life.
The components of the legacy and new versions are not
interchangeable. If maintenance is performed on the new
travel indicator, it is recommended to replace the entire travel
indicator assembly with the new version. Part numbers for
the assemblies are shown in the parts list. Figure 7 shows
the difference between the designs. The spare parts kits will
support either design. Take care to use the correct O-ring
(key 142A or 142B) when performing maintenance, see parts
list for the appropriate part number.
1. Remove plastic travel indicator cover (key 138).
2. Loosen travel indicator bushing (key 140) and remove it
by sliding it over the travel indicator stem (key 139).
3. Remove indicator fitting (key 141) and inspect O-ring
(key 143). Remove O-ring (key 142B) and back-up rings
(key 160). Replace and lubricate O-ring if damaged.
Pull up on the travel indicator stem (key 139) to force
the spring collet (key 144) out of the diaphragm head
groove. Examine these parts and the stem for wear and
replace if necessary.
4. Examine the retaining ring (key 145) for wear and
replace if necessary.
5. Insert the travel indicator stem (key 139) and spring
collet (key 144) back into the diaphragm head groove.
Replace the indicator fitting (key 141) and O-ring
(key 143) and tighten with a referenced torque of
20 ft-lbs / 27.1 N•m.
6. Lubricate the O-ring (key 142B) and back-up rings
(key 160, 2 required). Place one back-up ring on the
stem (key 139) followed by the O-ring and then the other
back-up ring. Push into groove of the indicator fitting
(key 141).
7. Slide the travel indicator bushing (key 140) over the
travel indicator stem (key 139) and tighten firmly in place
with a torque of 3.7 ft-lbs / 5.0 N•m.
8. Replace the travel indicator cover (key 138) and tighten
firmly in place.
PRX Series Maintenance
CAUTION
Always remove spring (key 7) tension
before performing maintenance on this
unit. To remove spring tension, loosen
locknut (key 2) and back out adjusting screw
(key 1) until compression is removed from
the spring.
Lower Diaphragm Maintenance
1. Disconnect pilot and remove it from the line.
2. Remove machine screws (key 10) from lower cover
(key 21) and the separate lower cover from the body
(key 16).
3. Use a wrench to hold the stem (key 23) and break loose
the stem nut (key 20). Remove the stem nut and washer
(key 11).
4. Remove the upper diaphragm plate (key 13), diaphragm
(key 14), pad holder (key 22) and O-ring (key 18).
Inspect parts for damage or wear, replace if necessary.
5. Remove orifice (key 19) and O-ring (key 17). Inspect
the parts for damage or wear and replace if necessary.
Lightly lubricate the O-ring and place in the body
(key 16). Install the orifice.
6. Set the pad holder (key 22) in the body (key 16).
7. Lightly lubricate the rims of the diaphragm (key 14) and
place it on top of the pad holder (key 22). Set the upper
diaphragm plate (key 13) on the diaphragm (key 14).
8. Lightly lubricate the O-ring (key 18) and place it in the
lower cover (key 21).
9. Place the washer (key 11) and stem nut (key 20) on
the stem (key 23) and tighten. If also performing Upper
Case Maintenance, skip to step 2 of the Upper Case
Maintenance section.
10. Insert machine screws (key 10) in the lower
cover (key 21) and tighten uniformly to ensure
proper seal.
Upper Diaphragm Maintenance
1. Disconnect pilot and remove it from the line.
2. Loosen locknut (key 2) and back out adjusting screw
(key 1) until compression is removed from the spring.
Remove cap (key 3).
3. Lift the upper spring seat (key 6), spring (key 7) and
O-ring (key 4) out of the upper cover (key 8). Inspect
O-ring and replace if necessary.
4. Remove the machine screws (key 10) and the washers
(key 11), separate the upper cover (key 8) from the
body (key 16) and lift the lower spring seat (key 9) away
from upper diaphragm nut (key 26). Use a wrench to
hold stem (key 23) securely while removing the upper
diaphragm nut.
15
EZH and EZHSO Series
5. Remove remaining loose components: washer (key 11),
upper diaphragm plate (key 13), diaphragm (key 14),
lower diaphragm plate (key 15) and O-rings (keys 18
and 25). Inspect diaphragm and O-rings for damage or
wear and replace if necessary.
6. Lightly lubricate the O-ring (key 25). Place O-ring over
the stem (key 23) and press it down into the body
(key 16).
7. Set the lower diaphragm plate (key 15) into the body
(key 16).
8. Lightly lubricate the rims of the diaphragm (key 14)
and place it in the body (key 16) on top of the lower
diaphragm plate (key 15).
9. Set the upper diaphragm plate (key 13) on top of the
diaphragm (key 14).
10. Place washer (key 11) and stem nut (key 26) on the
stem (key 23) and tighten using a wrench to hold
the stem.
11. Place the lower spring seat (key 9) on the upper
diaphragm nut (key 26) and mount the upper cover
(key 8) on top of the body (key 24) and the diaphragm
(key 14).
12. Place and uniformly tighten the machine screws
(key 10) to hold the body (key 24) and upper cover
(key 8) together. Position the diaphragm convolution
facing down and make sure that the diaphragm is not
deformed and is properly installed.
13. Install spring (key 7) and upper spring seat (key 6) on
top of the lower spring seat (key 9) inside the upper
cover (key 8). Install Cap (key 3).
14. Screw in adjusting screw (key 1) at desired spring
compression and use the lock nut (key 2) to lock the
adjusting screws position. Refer to Pilot Adjustment
section (page 9) to adjust pilot settings.
Damper and Restrictor Maintenance
1. Remove screw (key 31) and plate (key 29) off from the
body (key 16).
2. Remove ring nuts (key 30).
3. Remove damper adjusting screw with hole (key 27).
Remove and inspect O-ring (key 28) for damage or wear
and replace if necessary. Lightly lubricate O-ring before
placing on the adjusting screw. Insert damper adjusting
screw into the body (key 16) and tighten. Insert ring nut
(key 30) and tighten. Back out damper adjusting screw
until it stops.
4. Remove restrictor adjusting screw with hole (key 32).
Remove and inspect O-ring (key 28) for damage or wear
and replace if necessary. Lightly lubricate O-ring before
placing on the adjusting screw. Insert restrictor adjusting
screw into the body (key 16) and completely tighten.
Insert ring nut (key 30) and completely tighten. Back out
restrictor adjusting screw 1/2 turn.
Note
When using a Type PRX/120 pilot with a
Type PRX/125 pilot as a monitor, use the
following settings:
• Restrictor - completely tighten and then
back out three full turns.
• Damper - back out until it stops.
5. Install plate (key 29) and screw (key 31).
Type SA/2 Maintenance
1. Disconnect pilot supply filter regulator and remove it
from the line.
2. Remove cap screws, washers and nuts (keys 2, 9 and
10) from body (key 7) and separate filter cover (key 11)
and regulator cover (key 19) from the body (key 7).
Separate loose components from the body such as the
spring (key 1), washer (key 3), plate (key 4), filter net
(key 8), felt (key 12), diaphragm (key 18), spring washer
(key 20) and nut (key 21).
3. Remove and inspect O-ring (key 13) for damage or wear
and replace if necessary. Lightly lubricate the O-ring
before placing it back in the filter cover (key 11).
4. Clean filter net (key 8). Replace felt (key 12).
5. Inspect diaphragm (key 18) for damage or wear and
replace if necessary. Check the seating surface of the
screw unit (key 17) for erosion, scratches, spurs or other
damage and replace if necessary.
6. Unscrew and remove the regulator seat (key 5). Inspect
O-ring (key 6) for damage or wear and replace if
necessary. Lightly lubricate the O-ring and place it on
the regulator seat.
7. Pull pad holder unit (key 15) out of the body (key 7).
Inspect the seat for damage, replace if necessary.
8. Set the pad holder unit (key 15) on the spring (key 14)
and insert the regulator seat (key 5). Tighten the
regulator seat until it stops.
9. Lightly lubricate the outer and inner rims of the
diaphragm (key 18). Place the diaphragm onto the
screw unit (key 17) and slide the screw unit into the
regulator seat (key 5). Place plate (key 4), washer
(key 3) and spring washer (key 20) and screw nut
(key 21) into the screw unit. Use care to avoid damage
to parts when reassembling.
10. Set the spring (key 1) on top of the nut (key 21).
11. Align the regulator cover (key 19) over the body
(key 7) with the sense port (V) opposite the pilot supply
port (R).
12. Place the felt (key 12) and filter net (key 8), one on each
side of the felt, on the filter cover (key 11).
13. Pick up the body (key 7) and place it on the filter cover
(key 11) with the inlet port (M) aligned vertically with the
sense port (V).
14. Insert cap screws (key 2). Place washers (key 9) and
nuts (key 10) on the end of the cap screws. Tighten
the nuts.
16
EZH and EZHSO Series
Parts Ordering
Key Description
Each EZH or EZHSO Series regulator is assigned a serial
number, which can be found on the nameplate. Refer to the
serial number when contacting your local Sales Office for
technical information or when ordering parts.
When ordering replacement parts, reference the key
number of each needed part as found in the following parts
list. Separate kit containing all recommended spare parts
is available.
Parts List
EZH and EZHSO Series Main Valve
(Figures 8 and 9)
Key Description
Part Number
EZH Series
Disk Parts Kits
NPS 1, 2 and 3 / DN 25, 50 and 80
(include keys 29, 30, 32, 33, 34 and 62)
NPS 4, 6, 8 and 12 X 6 /
DN 100, 150, 200 and 300 X 150
(include keys 29, 30, 32, 33, 69, 71 and 75)
NPS 1 / DN 25
Nitrile (NBR) and Fluorocarbon (FKM)
REZH1X00N12
Fluorocarbon (FKM)REZH1X00F12
Polyurethane (PU)
REZH1X00P12
NPS 2 / DN 50
Nitrile (NBR) and Fluorocarbon (FKM)REZH2X00N12
Fluorocarbon (FKM)REZH2X00F12
Polyurethane (PU)
REZH2X00P12
NPS 3 / DN 80
Nitrile (NBR) and Fluorocarbon (FKM)REZH3X00N12
Fluorocarbon (FKM)REZH3X00F12
Polyurethane (PU)
REZH3X00P12
NPS 4 / DN 100
Nitrile (NBR) and Fluorocarbon (FKM)
REZH4X00N12
Fluorocarbon (FKM)
REZH4X00F12
Polyurethane (PU)
REZH4X00P12
NPS 6, 8 and 12 X 6 /
DN 150, 200 and 300 X 150 Bodies
Nitrile (NBR)
REZH6X00N12
Fluorocarbon (FKM)
REZH6X00F12
Polyurethane (PU)
REZH6X00P12
EZHSO Series
Disk Parts Kits
NPS 1, 2 and 3 / DN 25, 50 and 80
(include keys 29, 30, 34, 62 and 154)
NPS 4 / DN 100
(include keys 29, 30, 69, 71, 75 and 154)
NPS 6, 8 and 12 x 6 / DN 150, 200 and 300 x 150
(include keys 29, 30, 32, 33, 69, 71 and 75)
NPS 1 / DN 25
Nitrile (NBR) and Fluorocarbon (FKM) REZHS1X0N12
Fluorocarbon (FKM)
REZHS1X0F12
Polyurethane (PU) REZHS1X0P12
NPS 2 / DN 50
Nitrile (NBR) and Fluorocarbon (FKM) REZHS2X0N12
Fluorocarbon (FKM) REZHS2X0F12
Polyurethane (PU)
REZHS2X0P12
NPS 3 / DN 80
Nitrile (NBR) and Fluorocarbon (FKM) REZHS3X0N12
Fluorocarbon (FKM) REZHS3X0F12
Polyurethane (PU) REZHS3X0P12
NPS 4 / DN 100
Nitrile (NBR) and Fluorocarbon (FKM) REZHS4X0N12
Fluorocarbon (FKM) REZHS4X0F12
Polyurethane (PU) REZHS4X0P12
NPS 6, 8 and 12 X 6 / DN 150, 200 and
300 X 150 Bodies
Nitrile (NBR)
REZH6X00N12
Fluorocarbon (FKM)
REZH6X00F12
Polyurethane (PU)
REZH6X00P12
Part Number
EZH Series
Full Repair Kits
NPS 1, 2 and 3 / DN 25, 50 and 80
(include keys 4, 7, 8, 9, 15, 17, 20, 28,
29, 30, 32, 33, 34, 62, 142B and 143)
NPS 4 / DN 100 (include keys 7, 8,
9, 15, 17, 20, 29, 30, 32, 33, 34, 63, 64,
67, 69, 71, 75, 142B and 143)
NPS 6, 8 and 12 X 6 /
DN 150, 200 and 300 X 150
(include keys 7, 8, 9, 15, 17, 20, 29, 30, 32, 33,
34, 64, 69, 71, 75, 142, 143, 160 and 198)
NPS 1 / DN 25
Nitrile (NBR) and Fluorocarbon (FKM)REZH1X00N22
Fluorocarbon (FKM)REZH1X00F22
Polyurethane (PU)
REZH1X00P22
NPS 2 / DN 50
Nitrile (NBR) and Fluorocarbon (FKM)REZH2X00N22
Fluorocarbon (FKM)REZH2X00F22
Polyurethane (PU)
REZH2X00P22
NPS 3 / DN 80
Nitrile (NBR) and Fluorocarbon (FKM)REZH3X00N22
Fluorocarbon (FKM)REZH3X00F22
Polyurethane (PU)
REZH3X00P22
NPS 4 / DN 100
Nitrile (NBR) and Fluorocarbon (FKM)
REZH4X00N22
Fluorocarbon (FKM)
REZH4X00F22
Polyurethane (PU)
REZH4X00P22
NPS 6 and 12 X 6 / DN 150 and 300 X 150 Bodies
Nitrile (NBR)
REZH6X00N22
Fluorocarbon (FKM)
REZH6X00F22
Polyurethane (PU)
REZH6X00P22
NPS 8 / DN 200 Body
Nitrile (NBR)
REZH8X00N22
Fluorocarbon (FKM)
REZH8X00F22
Polyurethane (PU)
REZH8X00P22
EZHSO Series
Full Repair Kits
NPS 1, 2 and 3 / DN 25, 50 and 80
(include keys 4, 7, 8, 9, 15, 17, 20, 28,
29, 30, 34, 62, 142B, 143, 153 and 154)
NPS 4 / DN 100 (include keys 7, 8, 9,
15, 17, 20, 29, 30, 34, 63, 64, 67, 69, 71,
75, 142B, 143, 153, 154, 157 and 158)
NPS 6, 8 and 12 X 6 / DN 150, 200 and 300 X 150
(include keys 7, 8, 9, 15, 17, 20, 29, 30, 32,
33, 34, 64, 69, 71, 75, 142, 143, 153,
157, 158, 160 and 198)
NPS 1 / DN 25
Nitrile (NBR) and Fluorocarbon (FKM) REZHS1X0N22
Fluorocarbon (FKM)
REZHS1X0F22
Polyurethane (PU)
REZHS1X0P22
NPS 2 / DN 50
Nitrile (NBR) and Fluorocarbon (FKM) REZHS2X0N22
Fluorocarbon (FKM) REZHS2X0F22
Polyurethane (PU)
REZHS2X0P22
NPS 3 / DN 80
Nitrile (NBR) and Fluorocarbon (FKM)
REZHS3X0N22
Fluorocarbon (FKM) REZHS3X0F22
Polyurethane (PU)
REZHS3X0P22
NPS 4 / DN 100
Nitrile (NBR) and Fluorocarbon (FKM)
REZHS4X0N22
Fluorocarbon (FKM)
REZHS4X0F22
Polyurethane (PU) REZHS4X0P22
NPS 6 and 12 X 6 /
DN 150 and 300 X 150 Bodies
Nitrile (NBR)
REZHS6X0N22
Fluorocarbon (FKM)
REZHS6X0F22
Polyurethane (PU)
REZHS6X0P22
NPS 8 / DN 200 Body
Nitrile (NBR)
REZHS8X0N22
Fluorocarbon (FKM)
REZHS8X0F22
Polyurethane (PU)
REZHS8X0P22
1
Body
See the following Table
2
Seat Ring, Stainless steel
NPS 1 / DN 25 Body
For 100% Capacity
ERAA04303A0
For 80% Capacity ERAA06540A0
For 50% Capacity ERAA06541A0
For 30% Capacity ERAA06542A0
17
EZH and EZHSO Series
Key Description
2
Seat Ring, Stainless steel (continued)
NPS 2 / DN 50 Body
For 100% Capacity
For 80% Capacity
For 50% Capacity For 30% Capacity NPS 3 / DN 80 Body
For 100% Capacity
For 80% Capacity For 50% Capacity For 30% Capacity NPS 4 / DN 100 Body
For 100% Capacity
For 80% Capacity For 50% Capacity For 30% Capacity NPS 6 / DN 150 Body
For 100% Capacity
For 80% Capacity
For 50% Capacity
For 30% Capacity
NPS 12 X 6 and 8 /
DN 300 X 150 and 200 Bodies
For 100% Capacity
For 50% Capacity
For 30% Capacity
3(1) Cage, Steel
NPS 1 / DN 25 (standard)
NPS 2 / DN 50
Standard
Whisper Trim™ Cage
NPS 3 / DN 80
Standard
Whisper Trim Cage
NPS 4 / DN 100
Standard
Whisper Trim Cage
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Standard
Whisper Trim Cage
4*
Anti-Friction Ring (2 required), PTFE
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
5
Actuator Lower Casing, Carbon steel
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body NPS 4 / DN 100 Body NPS 6, 12 X 6 and 8 /
DN 150, 300 X 150 and 200 Bodies
6
Cap Screws, Zinc-plated steel
NPS 1 / DN 25 Body (4 required)
NPS 2 / DN 50 Body (8 required)
NPS 3 / DN 80 Body (4 required)
NPS 4 / DN 100 Body (8 required) NPS 6 and 12 X 6 / DN 150 and
300 X 150 Bodies (12 required)
NPS 8 / DN 200 Body (8 required)
7*
O-ring
NPS 1 / DN 25 Body
Nitrile (NBR)
Fluorocarbon (FKM)
NPS 2 / DN 50 Body
Nitrile (NBR)
Fluorocarbon (FKM)
NPS 3 / DN 80 Body
Nitrile (NBR)
Fluorocarbon (FKM)
NPS 4 / DN 100 Body
NPS 6 and 12 X 6 /
DN 150 and 300 X 150 Bodies
Nitrile (NBR)
Fluorocarbon (FKM)
NPS 8 / DN 200 Body
Nitrile (NBR)
Fluorocarbon (FKM)
Part Number
ERAA04296A0
ERAA06553A0
ERAA06576A0
ERAA06577A0
ERAA05563A0
ERAA07459A0
ERAA07456A0
ERAA07461A0
ERAA10213A0
ERAA11449A0
ERAA11452A0
ERAA11453A0
ERAA23465A0
ERAA02020A0
ERAA02022A0
ERAA02023A0
ERAA23465A0
ERAA02020A0
ERAA02022A0
GE31405X012
GE37679X012
GE37959X012
GE38018X012
GE38021X012
M0303260X12
M0303520X12
ERAA00860A0
ERAA24210A0
M0274090X12
M0272760X12
M0272810X12
M0296970X12
M0295830X12
GE44397X012
M0300770X12
ERAA09114A0
M4691008X12
GE11386X012
GE11387X022
M4691020X42
ERCA01349A0
ERCA01350A0
19B2838X012
19B2838X022
18B2124X012
18B2124X022
18B8514X012
18B8514X022
M6020169X12
ERCA00970A0
ERCA00970A1
1P5585X0023
1P5585X0032
Key Description
8*
Anti-Friction Rings (4 required), PTFE
NPS 1 / DN 25
NPS 2 / DN 50
NPS 3 / DN 80
NPS 4 / DN 100 (8 required for EZH Series,
6 required for EZHSO Series)
NPS 6, 12 X 6 and 8 /
DN 150, 300 X 150 and 200 Bodies
(10 required for EZH Series,
8 required for EZHSO Series)
9*
O-ring (2 required), Fluorocarbon (FKM)
NPS 1 / DN 25
NPS 2 / DN 50
NPS 3 / DN 80
NPS 4 / DN 100
EZH Series
EZHSO Series
Nitrile (NBR)
Fluorocarbon (FKM)
NPS 6, 12 X 6 and 8 /
DN 150, 300 X 150 and 200 Bodies (4 required
for EZH Series, 3 required for EZHSO Series)
Nitrile (NBR)
Fluorocarbon (FKM)
10
Pipe Plug, NPS 1, 2 and 3 /
DN 25, 50 and 80 (5 required) NPS 4, 6, 12 X 6 and 8 /
DN 100, 150, 300 X 150
and 200 Bodies (6 required)
11
Actuator Upper Casing, Carbon steel
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
NPS 4 / DN 100 Body
NPS 6, 12 X 6 and 8 /
DN 150, 300 X 150 and 200 Bodies
13
Spring, Carbon steel
EZH Series
NPS 1 / DN 25 Body NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
NPS 4, 6, 12 X 6 and 8 /
DN 100, 150, 300 X 150 and 200 Bodies(2)
EZHSO Series(2)
14
Sleeve, Steel
EZH Series
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
NPS 4, 6, 12 X 6 and 8 /
DN 100, 150, 300 X 150 and 200 Bodies
EZHSO Series(2)
15* O-ring, Fluorocarbon (FKM)
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
NPS 4 / DN 100 Body
EZH and EZHSO Series,
Nitrile (NBR) and Fluorocarbon (FKM)
EZHSO Series only, Nitrile (NBR)
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
Fluorocarbon (FKM)
16
Socket Head Cap Screw, Zinc-plated steel
NPS 1 / DN 25 Body (6 required)
NPS 2 / DN 50 Body (6 required)
EZH Series
EZHSO Series
NPS 3 / DN 80 Body (12 required)
NPS 4 / DN 100 Body (8 required) NPS 6, 12 X 6 and 8 / DN 150, 300 X 150
and 200 Bodies (16 required)
17* O-ring, Fluorocarbon (FKM)
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
*Recommended spare part
1. When retrofitting an EZH Series with pins with the new cage, it is also necessary to order the Seat Ring.
2. Parts are not orderable. See Table 6 for sleeve assembly if it needs to be replaced.
18
Part Number
M0194530X12
M0194690X12
M0192170X12
M0194830X12
ERAA00645A0
M6020019X12
M6020029X12
M6020036X12
M6020044X12
ERAA00262A0
M6020044X12
ERCA00979A1
ERCA00979A0
1A767524662
1A767524662
M0297220X12
M0296950X12
GE44420X012
M0300760X12
ERAA00360A0
M0194590X12
M0191440X12
M0192240X12
--------------------M0274230X12
M0272600X12
M0276310X12
--------------------M6020021X12
M6020095X12
M6020073X12
M6020170X12
10A3588X022
ERCA00971A2
ERCA00971A1
M5011005X12
M5011014X12
19B0829X012
M5011140X12
M5011157X12
M5011157X12
M6020120X12
M6020096X12
EZH and EZHSO Series
Key Description
NPS 3 / DN 80 Body
NPS 4 / DN 100 Body (EZH and EZHSO Series)
Nitrile (NBR) and Fluorocarbon (FKM)
EZHSO Series only, Fluorocarbon (FKM)
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
Fluorocarbon (FKM)
18
Inlet Plate, Carbon steel
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
NPS 4 / DN 100 Body
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
19
Outlet Plate, Carbon steel
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
NPS 4 / DN 100 Body NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
20* Diaphragm, Nitrile (NBR)
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
NPS 4 / DN 100 Body NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
21
Cap Screw, Zinc-plated steel
NPS 1 / DN 25 Body
(14 required for EZH Series,
16 required for EZHSO Series)
NPS 2 / DN 50 Body
(14 required for EZH Series,
16 required for EZHSO Series) NPS 3 / DN 80 Body
(14 required for EZH Series,
16 required for EZHSO Series)
NPS 4 / DN 100 Body (16 required) NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (28 required)
22
Plain Washer, Steel
NPS 1 / DN 25 Body (16 required)
NPS 2 / DN 50 Body (16 required)
NPS 3 / DN 80 Body (16 required) NPS 4 / DN 100 Body (16 required) NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (28 required)
23
Hex Nut, Zinc-plated carbon steel
NPS 1 / DN 25 Body (16 required)
NPS 2 / DN 50 Body (16 required)
NPS 3 / DN 80 Body (16 required)
NPS 4 / DN 100 Body (16 required) NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (28 required)
24
Continuous Thread Stud Bolt, Zinc-Plated Steel
NPS 1, 2 and 3 / DN 25, 50 and 80 Bodies only
NPS 1 / DN 25 Body (4 required)
NPS 2 / DN 50 Body (6 required)
NPS 3 / DN 80 Body (6 required)
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (12 required)
25
Intermediate Flange, Carbon steel
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body
NPS 3 / DN 80 Body
NPS 6 / DN 150 Body
NPS 12 X 6 / DN 300 X 150 Body
NPS 8 / DN 200 Body
26
Hex Nut, Steel
NPS 1 / DN 25 Body (4 required)
NPS 2 / DN 50 Body (6 required)
NPS 3 / DN 80 Body (4 required)
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (12 required)
Part Number
M6020127X12
M6020097X12
ERAA00263A0
ERCA00961A0
ERCA00961A1
M0194440X12
M0194620X12
M0192080X12
M0300020X12
ERAA00363A0
M0194480X12
M0194660X12
M0192120X12
M0300030X12
ERAA00364A0
M0194450X12
M0194630X12
M0192090X12
M0194750X12
ERAA00648A0
1A361524052
1P1477X0012
GF05679X012
M4691022X12
M5007193X12
M5001007X12
M5001009X12
M5001012X12
M5001015X12
M5001015X12
1A341224122
1A343324122
ERCA01576A0
M4692005X12
M5002014X12
M4693002X12
GE00808X042
M4693003X22
ERCA01475A0
M0297240X12
M0295800X12
GE44403X012
ERAA00365A0
ERAA00365A0
ERAA00774A0
1A341224122
1A341224122
M4692004X12
M5002011X12
Key Description
Part Number
27
Sleeve Adaptor, Carbon steel
EZH Series
NPS 1 / DN 25 Body
M0274250X12
NPS 2 / DN 50 Body
M0272570X12
NPS 3 / DN 80 Body
M0276340X12
NPS 4, 6, 12 X 6 and 8 / DN 100, 150,
300 X 150 and 200 Bodies
---------- EZHSO Series(2)
----------28*O-ring, Fluorocarbon (FKM)
NPS 1 / DN 25 Body
M6020144X12
NPS 2 / DN 50 Body
M6020079X12
NPS 3 / DN 80 Body
M6020151X12
29* O-ring(3)
EZH Series
NPS 1 / DN 25
M6020143X12
NPS 2 / DN 50
M6020112X12
NPS 3 / DN 80
M6020147X12
NPS 4 / DN 100
Nitrile (NBR)
M6020171X22
Fluorocarbon (FKM)
M6020171X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
ERAA09517A0
Fluorocarbon (FKM)
ERAA09517A1
EZHSO Series
NPS 1 / DN 25
GE23545X012
NPS 2 / DN 50
1H9938X0012
NPS 3 / DN 80
1R397106382
NPS 4 / DN 100
Nitrile (NBR)
1H742206992
Fluorocarbon (FKM)
M6020171X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
ERAA09517A0
Fluorocarbon (FKM)
ERAA09517A1
30* Disk Holder Assembly
EZH Series
NPS 1 / DN 25 Body
Nitrile (NBR)
M0280900X12
Fluorocarbon (FKM)
M0282130X12
Polyurethane (PU)
ERAA07132A0
NPS 2 / DN 50 Body
Nitrile (NBR)
M0280910X12
Fluorocarbon (FKM)
M0282140X12
Polyurethane (PU)
ERAA07133A0
NPS 3 / DN 80 Body
Nitrile (NBR)
M0280920X12
Fluorocarbon (FKM)
M0282150X12
Polyurethane (PU)
ERAA10096A0
NPS 4 / DN 100 Body
Nitrile (NBR) M0299090X12
Fluorocarbon (FKM) M0300120X12
Polyurethane (PU)
ERAA11680A0
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
ERAA23677A0
Fluorocarbon (FKM)
ERAA23677A1
Polyurethane (PU)
ERAA24008A0
EZHSO Series
NPS 1 / DN 25 Body
Nitrile (NBR)
GE42269X012
Fluorocarbon (FKM)
GE42269X022
Polyurethane (PU)
ERAA07132A0
NPS 2 / DN 50 Body
Nitrile (NBR)
GE42168X012
Fluorocarbon (FKM)
GE42168X022
Polyurethane (PU)
ERAA07133A0
NPS 3 / DN 80 Body
Nitrile (NBR) GE42244X012
Fluorocarbon (FKM)
GE42244X022
Polyurethane (PU)
ERAA10096A0
NPS 4 / DN 100 Body
Nitrile (NBR)
GE44998X012
Fluorocarbon (FKM)
GE44998X022
Polyurethane (PU)
ERAA11680A0
*Recommended spare part
2. Parts are not orderable. See Table 6 for sleeve assembly if it needs to be replaced.
3. Included also in EZHSO Series sleeve subassembly (NPS 1, 2 and 3 / DN 25, 50 and 80).
19
EZH and EZHSO Series
TOP VIEW
TOP VIEW
140
L2
140
138
142A
138
139
139
140
140
141
141
143
L2
L2
142B
160
143
145
144
P1766
L2
145
144
S2
LEGACY TRAVEL INDICATOR DETAIL
S2
IMPROVED TRAVEL INDICATOR DETAIL
APPLY LUBRICANT (L) / SEALANT (S)(1):
L2 = SILICONE-BASED OR PTFE-BASED GREASE
S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
Figure 7. EZH Series Travel Indicator Assembly
Key Description
30* Disk Holder Assembly (continued)
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
Fluorocarbon (FKM)
Polyurethane (PU)
31
Disk Retainer
EZH Series only, Nitrile (NBR)
and Fluorocarbon (FKM)
NPS 1 / DN 25 Body
NPS 2 / DN 50 Body NPS 3 / DN 80 Body NPS 4 / DN 100 Body NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
EZH Series, Polyurethane (PU)
NPS 1/ DN 25
NPS 2 / DN 50
NPS 3 / DN 80
NPS 4 / DN 100
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
EZHSO Series, Polyurethane (PU)
NPS 1 / DN 25
NPS 2 / DN 50
NPS 3 / DN 80
NPS 4 / DN 100
NPS 6, 12 X 6, and 8 /
DN 150, 300 X 150, and 200 Bodies
32* Lock Washer, EZH Series only, Stainless steel
NPS 1 / DN 25 Body (1 required)
NPS 2 / DN 50 Body (2 required)
NPS 3 / DN 80 Body (3 required)
NPS 4 / DN 100 Body (4 required) NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (8 required)
*Recommended spare part
20
Part Number
ERAA23677A0
ERAA23677A1
ERAA24008A0
M0274160X12
M0272750X12
M0276250X12
M0300100X12
----------ERAA04846A0
ERAA04789A0
ERAA05023A0
ERAA08206A0
ERAA23464A0
ERAA03714A0
ERAA03633A0
ERAA04692A0
ERAA04913A0
ERAA23464A0
M5077005X12
M5077004X12
M5077001X12
M5001004X12
ERAA26743A0
Key Description
Part Number
33
Socket Head Cap Screw
NPS 1 / DN 25 Body EZH Series only (1 required) M5011131X12
NPS 2 / DN 50 Body EZH Series only (2 required) M5011006X12
NPS 3 / DN 80 Body EZH Series only (3 required) M5011017X12
NPS 4 / DN 100 Body EZH Series only (4 required) M5011018X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (8 required)
M5011018X12
34*O-ring
NPS 1 / DN 25
Nitrile (NBR) M6010099X12
Fluorocarbon (FKM) M6020065X12
NPS 2 / DN 50
Nitrile (NBR) M6010109X12
Fluorocarbon (FKM) M6020159X12
NPS 3 / DN 80
Nitrile (NBR) M6010247X12
Fluorocarbon (FKM) M6020165X12
NPS 4 / DN 100
Nitrile (NBR) M6010126X12
Fluorocarbon (FKM) M6020127X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
1H8623X0023
Fluorocarbon (FKM)
1H8623X0022
35
Bracket or Eyebolt (2 required), Steel
NPS 1 / DN 25 Body - Bracket
M0220960X12
NPS 2 / DN 50 Body - Bracket
M0278570X12
NPS 3 / DN 80 Body - Eyebolt
M5095001X12
NPS 4 / DN 100 Body - Eyebolt M5095001X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies - Eyebolt
M5040006X12
36
Nameplate
----------37
Drive Screw (3 required), Stainless steel
-----------
EZH and EZHSO Series
Key Description
Part Number
38
Travel Indicator Plug
NPS 1, 2 and 3 / DN 25, 50 and 80 Bodies M0297680X12
NPS 4 / DN 100 Body M0303680X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
ERAA00990A0
39
Long Bolt (2 required), Zinc-plated steel
EZH Series
NPS 1 / DN 25 Body
GE07221X012
NPS 2 / DN 50 Body
M4691014X12
NPS 3 / DN 80 Body
ERCA01574A0 43
Caution/Warning Label, Aluminum
----------44
Adjusting Screw Cap, Plastic
24B1301X012
59
Flow Arrow, Stainless steel
----------60
Protective Cap (2 required), for EZH Series only, Plastic
NPS 1 / DN 25 Body
T13659T0092
NPS 2 / DN 50 Body
T13659T0072
NPS 3 / DN 80 Body
T13659T0102
61 Sleeve Guide, Steel
NPS 4 / DN 100 Body only
M0300360X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
ERAA00850A0
62*O-ring
NPS 1 / DN 25 Body
M6020082X12
NPS 2 / DN 50 Body
M6010110X12
NPS 3 / DN 80 Body
M6020094X12
63* O-ring, Fluorocarbon (FKM), NPS 4 / DN 100 only
M6020172X12
64* O-ring
NPS 4 / DN 25 Body
(EZH and EZHSO Series),
Nitrile (NBR) and Fluorocarbon (FKM)
M6020139X12
EZHSO Series only, Fluorocarbon (FKM)
1D2673X0042
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
ERCA00966A2
Fluorocarbon (FKM)
ERCA00966A0
66 Socket Head Set Screw, Zinc-plated steel
NPS 4 / DN 100 Body Only (8 required) M5021047X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (8 required)
M5021047X12
67* Crush Washer, Aluminum
NPS 4 / DN 100 Body Only (8 required) M4501738X12
68 Captured Screw, Zinc-plated steel
NPS 4 / DN 100 Body Only (8 required) M0300040X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 (16 required)
M0300040X12
69*O-ring
NPS 4 / DN 100 only, Fluorocarbon (FKM)
M6020149X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
ERCA00967A0
Fluorocarbon (FKM)
ERCA00967A1
70
Cap, Carbon steel
NPS 4 / DN 100 Body, EZH Series
M0299980X12
NPS 4 / DN 100 Body, EZHSO Series
GE44707X012
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies, EZH Series
ERAA11794A0
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies, EZHSO Series
ERAA00362A0
71*O-ring, Fluorocarbon (FKM)
M6020175X12
Nitrile (NBR)
M6020175X22
72
Locking Nut, Steel
EZH Series NPS 4, 6, 12 X 6 and 8 /
DN 100, 150, 300 X 150 and 200 Bodies(2)
----------73
Upper Spring Seat, Carbon steel, EZH Series only
NPS 4, 6, 12 X 6 and 8 / DN 100, 150,
300 X 150 and 200 Bodies(2)
----------74
Hex Socket Cap Screw, Zinc-plated steel
NPS 4 / DN 100 Body only M5011135X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
M5011135X12
75* O-ring
Key Description
Part Number
NPS 4 / DN 100 Bodies, Fluorocarbon (FKM)
M6020117X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
ERCA00965A0
Fluorocarbon (FKM)
ERCA00965A1
77
Screw, Zinc-plated steel
NPS 4 / DN 100 Body (8 required)
M5009048X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (12 required)
FA402451X12
82
Lower Spring Seat, EZH Series only, Carbon steel
NPS 4, 6 12 X 6 and 8 / DN 100, 150,
300 X 150 and 200 Bodies only(2)
----------83
Ball Bearing (2 required), Steel
NPS 4, 6, 12 X 6 and 8 / DN 100, 150,
300 X 150 and 200 Bodies only(2)
----------138 Travel Indicator Cover, Plastic
NPS 1 / DN 25 Body
M0194580X12
NPS 2 / DN 50 Body
M0196770X12
NPS 3 / DN 80 Body
M0194870X12
NPS 4, 6, 12 X 6 and 8 / DN 100, 150,
300 X 150 and 200 Bodies
M0210910X12
139 Travel Indicator Stem, Stainless steel
NPS 1 / DN 25 Body
ERSA01803A0
NPS 2 / DN 50 Body
ERSA01801A0
NPS 3 / DN 80 Body(3)ERSA01803A0
NPS 4 / DN 100 Body
ERSA02571A0
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
ERAA00912A0
140 Indicator Bushing, Brass
ERSA02798A0
141 Travel Indicator Fitting, Brass
NPS 1, 2 and 3 / DN 25, 50 and 80 Bodies
ERSA02569A0
NPS 4 / DN 100
ERSA01824A0
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
ERAA00962A0
142A*O-ring
Nitrile (NBR)
M6010001X12
Fluorocarbon (FKM)
M6020066X12
142B* O-ring
Nitrile (NBR)
1H2926X0032
Fluorocarbon (FKM)
1H2926X0022
143* O-ring, Fluorocarbon (FKM)
M6020005X12
144 Spring Collet, Carbon steel
M0192180X12
145 Retaining Ring M4500325X12
146 Protective Cap (EZHSO Series only), Plastic(4)
NPS 1, 2, 3 and 4 / DN 25,
50, 80 and 100 Bodies
GE30222X012
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
ERAA10843A0
147 Stem (EZHSO Series only), Steel(4)
NPS 1 / DN 25 Body
GE29590X012
NPS 2 / DN 50 Body
GE26223X012
NPS 3 / DN 80 Body
GE44786X012
NPS 4 / DN 100 Body
M0303340X12
NPS 4, 6, 12 X 6 and 8 / DN 100,
150, 300 X 150 and 200 Bodies
ERAA23597A0
148 Upper Spring Seat (EZHSO Series only), Steel(2) - - - - - - - - - - 149 Lower Spring Seat (EZHSO Series only), Steel(2) - - - - - - - - - - 150 Ring Guide (EZHSO Series only), Plastic(2)
----------151 Stem Nut, Steel(4)
EZHSO Series only NPS 1, 2, 3 and 4 / DN 25,
50, 80 and 100 Bodies (2 required)
M5002006X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies (3 required)
GE49038X012
152 Hex Nut, Zinc-plated steel
NPS 2, 3 and 4 / DN 50, 80 and 100(4)
Bodies EZHSO Series
M5036006X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
GE49038X012
153* O-ring (EZHSO Series only)(5)
NPS 1 and 2 / DN 25 and 50
M6010246X12
NPS 3 and 4 / DN 80 and 100
T1230906382
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR) ERAA24446A0
Fluorocarbon (FKM)
ERAA24446A1
*Recommended spare part
2. Parts are not orderable. See Table 6 for sleeve assembly if it needs to be replaced.
3. Included also in EZHSO Series sleeve subassembly (NPS 1, 2 and 3 / DN 25, 50 and 80).
4. Included also in sleeve subassembly.
5. Included also in sleeve subassembly (NPS 1, 2 and 3 / DN 25, 50 and 80).
6. For 3 in. EZH Series units shipped prior to 2010, the travel indicator stem part number is ERSA01802A0
21
EZH and EZHSO Series
Key Description
Part Number
154* Hex Socket Cap Screw, Stainless steel
EZHSO Series only (1 required)
NPS 1 / DN 25 Body
FA402505X12
NPS 2 / DN 50 Body
M5011014X12
NPS 3 / DN 80 Body
FA402036X12
NPS 4 / DN 100 Body(5) (6 required)
Nitrile (NBR) or Fluorocarbon (FKM) DiskFA402505X12
Polyurethane (PU) Disk
M5011131X12
155 Stem Nut
NPS 1 / DN 25 Body EZHSO Series only(4)
GE29864X012
156 Upper Spring Seat Adapter
(EZHSO Series only), Steel(2)
NPS 4, 6, 12 X 6 and 8 / DN 100, 150,
300 X 150 and 200 Bodies
----------157* Anti-friction ring (EZHSO Series only), PTFE
NPS 4 / DN 100 Body
GE44971X012
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
ERAA21913A0
158* O-ring (EZHSO Series only)
NPS 4 / DN 100 Body
Nitrile (NBR)
ERAA00260A0
Fluorocarbon (FKM)
GE45201X012
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
Nitrile (NBR)
ERCA00982A1
Fluorocarbon (FKM)
ERCA00982A0
159 Check valve 15A6011E182
160* Back-up ring (2 required), PTFE
1N659106242
192 Travel Indicator Scale
M0201990X12
193 Washer (EZHSO Series only)
NPS 1, 2, 3 and 4 / DN 25,
50, 80 and 100 Bodies
FA405007X12
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
ERAA24183A0
195 Pipe Plug (1 required)
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
1A369224492
196 Washer (24 required)
NPS 6, 12 X 6 and 8 / DN 150,
300 X 150 and 200 Bodies
M5001011X12
197 Seat Adaptor
NPS 12 X 6 / DN 300 X 150 Body
ERAA23256A0
NPS 8 / DN 200 Body
ERAA00887A0
198* O-ring
NPS 12 X 6 / DN 300 X 150
Nitrile (NBR) ERAA23247A0
Fluorocarbon (FKM)
ERAA23247A1
NPS 8 / DN 200
Nitrile (NBR) ERAA27282A1
Fluorocarbon (FKM)
ERAA27282A0
Mounting Parts (Figures 10 through 12)
Standard Configurations for Single Pilot and Working
Monitor Pilots
Key Description
Part Number
46
Pipe Nipple
GE13860X012
47
Pipe Nipple, for NPS 1, 2 and 3 /
DN 25, 50 and 80 Bodies
1C488238982
(3 required for Working Monitor Pilots)
(45° Internal Elbow for Working Monitor Pilots only)
NPS 4 / DN 100 (4 required)
50
Pipe Tee (3 required)
NPS 4 / DN 100, for Working Monitor Pilots
1B8606X0032
51
Pipe Cross, NPS 4 / DN 100
1L3719X0012
52
Tubing (2 required)
----------54
Pipe Nipple, NPS 4 / DN 100
for Working Monitor Pilots
1C210026232
56
45° Elbow, NPS 4 / DN 100, for Working Monitor Pilots 15A6002XFU2
*Recommended spare part
2. Parts are not orderable. See Table 6 for sleeve assembly if it needs to be replaced.
4. Included also in sleeve subassembly.
5. Included also in sleeve subassembly (NPS 1, 2 and 3 / DN 25, 50 and 80).
22
Pre-Piped Pilot Supply Single-Pilot Configuration
(with standard body or tapped inlet body)
Key Description
47
Pipe Nipple
(NPS 1, 2 and 3 / DN 25, 50 and 80, 4 required;
NPS 4, 6, 12 X 6 and 8 / DN 100,
150, 300 X 150 and 200, 1 required)
48
Tube Elbow (NPS 1, 2 and 3 /
DN 25, 50 and 80, 4 required;
NPS 4 / DN 100, 5 required)
49
External Tube Connector (NPS 1 and 2 /
DN 25 and 50, 4 required;
NPS 3 / DN 80, 1 required;
NPS 4 / DN 100 , 3 required)
50
Pipe Tee (2 required)
51
Pipe Cross (not available for NPS 4 / DN 100)
52Tubing
Part Number
1C488238982
-----------
----------1B8606X0032
1L3719X0012
-----------
Pre-Piped Pilot Supply and Pilot Exhaust
Single-Pilot Configuration (with tapped inlet and outlet body)
Key Description
47
Pipe Nipple (NPS 1, 2 and 3 /
DN 25, 50 and 80, 6 required;
NPS 4 / DN 100, 3 required)
48
Tube Elbow (NPS 1, 2 and 3 /
DN 25, 50 and 80, 4 required;
NPS 4 / DN 100, 6 required)
49
External Tube Connector (NPS 1, 2 and 3 /
DN 25, 50 and 80, 5 required;
NPS 4 / DN 100, 3 required)
50
Pipe Tee (3 required)
51
Pipe Cross (not available for NPS 4 / DN 100)
52Tubing
55
Internal Connector
Part Number
1C488238982
--------------------1B8606X0032
1L3719X0012
---------------------
Pre-Piped Pilot Supply Working Monitor
Pilot Configuration
(with standard body or tapped inlet body)
Key Description
47
Pipe Nipple (NPS 1, 2 and 3 /
DN 25, 50 and 80, 3 required;
NPS 4 / DN 100, 1 required)
48
Tube Elbow (NPS 1, 2 and 3 /
DN 25, 50 and 80, 3 required;
NPS 4, 6, 12 X 6 and 8 / DN 100,
150, 300 X 150 and 200, 5 required)
49
External Tube Connector (NPS 1, 2 and 3 /
DN 25, 50 and 80, 5 required;
NPS 4, 6, 12 X 6 and 8 / DN 100,
150, 300 X 150 and 200, 3 required)
50
Pipe Tee (NPS 1, 2 and 3 /
DN 25, 50 and 80, 4 required;
NPS 4 / DN 100, 1 required)
52Tubing
54
Pipe Nipple (not available for NPS 4 / DN 100)
Part Number
1C488238982
-----------
----------1B8606X0032
----------1C2100X0012
EZH and EZHSO Series
Pre-Piped Pilot Supply and Pilot Exhaust Working
Monitor Pilot Configuration
(with tapped inlet and outlet body)
Key Description
Part Number
47
Pipe Nipple (NPS 1, 2 and 3 /
DN 25, 50 and 80, 5 required;
NPS 4 / DN 100, 3 required)
1C488238982
48
Tube Elbow (NPS 1, 2 and 3 /
DN 25, 50 and 80, 4 required;
NPS 4 / DN 100, 6 required)
----------49
External Tube Connector (NPS 1, 2 and 3 /
DN 25, 50 and 80, 5 required;
NPS 4 / DN 100, 3 required)
----------50
Pipe Tee (3 required) not available for NPS 4 / DN 100 1B8606X0032
51
Pipe Cross (not available for NPS 4 / DN 100)
1L3719X0012
52
Tubing
----------53
90° NPT Pipe Elbow
1B8608X0012
54
Pipe Nipple (not available for NPS 4 / DN 100)
1C210026232
55
Internal Connector
-----------
PRX Series Pilots (Figure 13)
Key Description
Parts Kits
Elastomer Parts Kits
Without Disk (include keys 4, 5, 14,
17, 18, 25 and 28)
Nitrile (NBR)
Fluorocarbon (FKM)
With Disk (includes keys 4, 5, 14,
17, 18, 22, 25 and 28)
Nitrile (NBR)
Fluorocarbon (FKM)
1
Adjusting Screw, Stainless steel
2
Locknut 3
Cap, Steel
4*
Upper Cover O-ring (1 required for Type PRX/120
or PRX/125, 2 required for Type PRX/120-AP
or PRX/125-AP)
Nitrile (NBR)
Fluorocarbon (FKM)
5*
O-ring Nitrile (NBR)
Fluorocarbon (FKM)
6
Upper Spring Seat, Stainless steel
7
Spring 8
Upper Cover, Steel
9
Lower Spring Seat, Stainless steel
10
Machine Screw, Zinc-plated steel (12 required) 11
Washer (14 required)
12
Filter 13
Upper Diaphragm Plate, Stainless steel (2 required)
14* Diaphragm Nitrile (NBR)
Fluorocarbon (FKM)
15
Lower Diaphragm Plate, Stainless steel
16
Body, Steel
17* Orifice O-ring Nitrile (NBR)
Fluorocarbon (FKM)
Part Number
RPRX00X0N12
RPRX00X0F12
RPRX00X0N22
RPRX00X0F22
M0253340X12
M5036008X12
M0253350X12
M6010178X12
M6020112X12
M6010005X12
M6020001X12
M0253360X12
See Table 2
M0298540X12
M0253380X12
M5011018X12
M5055001X12
M4500367X12
M0253390X12
GG05785X012
GG05785X022
M0253410X12
M0253310X12
M6010003X12
M6020126X12
Key Description
18* Lower Cover O-ring (2 required) Polyurethane (PU)
Fluorocarbon (FKM)
19
Seat, Steel 20
Nut, Steel
21
Lower Cover, Steel
22* Disk
Polyurethane (PU)
Fluorocarbon (FKM) 23
Seat, Steel
24
Nameplate 25* Stem O-ring Nitrile (NBR) Fluorocarbon (FKM) 26
Upper Diaphragm Nut 27
Damper Adjusting Screw with Hole, Stainless Steel
28* Restrictor/Damper O-ring (2 required)
29
Damper/Restrictor Plate Types PRX/120 and PRX/120-AP Types PRX/125 and PRX/125-AP Types PRX/131 and PRX/131-AP 30
Ring Nut (2 required)
31
Nameplate Screw 32
Restrictor Adjusting Screw with Hole 33
Plug (Types PRX/125 and PRX/125-AP only) 34
Plug (Types PRX/125 and PRX/125-AP only), Brass
35 Spring Barrel Extension for AP, Steel
Part Number
M6010098X12
M6020132X12
M0253440X12
M5002004X12
M0298600X12
ERAA11220A0
M0279950X12
M0253430X12
----------M6010223X12
M6020133X12
M5028005X12
M0253480X12
M6020054X12
M0254400X12
M0257930X12
M0268080X12
M0253490X12
M5061001X12
M0253480X12
1A767524662
M0257920X12
M0274100X12
Type SA/2 Pilot Supply Filter Regulators
(Figure 14)
Key Description
Parts Kits
Elastomer Parts Kits
(include keys 6, 12, 13, 15 and 18)
Nitrile (NBR)
Fluorocarbon (FKM)
1
Spring 2
Socket Head Cap Screw (4 required)
3
Washer 4
Plate 5
Regulator Seat 6*
O-ring, Nitrile (NBR)
7
Body, Steel 8
Filter Screen (2 required)
9
Washer (4 required)
10
Nut (4 required)
11
Filter Case, Steel 12* Felt 13* O-ring, Nitrile (NBR)
14
Spring 15* Disk Holder
16
Nameplate 17
Pusher Post
18* Diaphragm, Nitrile (NBR)
19
Regulator Case, Steel
20
Spring Washer 21
Nut
Part Number
GD89995X012
GD89995X022
M0192560X12
M5058003X12
M0248490X12
M0174470X12
M0200830X12
M6010013X12
M0297920X12
M0102200X12
M5057002X12
M5060005X12
M0174411X12
M0102210X12
M6010095X12
M0105970X12
M0233370X12
----------M0200790X12
M0174460X12
M0239890X12
M5001003X12
M5006012X12
*Recommended spare part
23
EZH and EZHSO Series
Key 1, EZH and EZHSO Series Main Valve Body Part Numbers
BODY SIZE
NPS
DN
1
25
2
4(2)
WCC Steel
100(2)
6
NPT
GE11581X012
GE11440X012
CL150 RF
GE11583X012
14B5623X032
CL300 RF
GE11607X012
14B5623X042
CL600 RF
GE11608X012
14B5623X052
SCH 40 BWE
GE11610X012
SCH 80 BWE
GE11611X012
PN 16/40 RF
GE13625X012
NPT
GE10588X012
200
-----------
-----------
SWE
GE10682X012
CL150 RF
GE10676X012
14B5834X032
CL300 RF
GE10678X012
14B5834X042
CL600 RF
GE10679X012
14B5834X052
SCH 40 BWE
GE10680X012
SCH 80 BWE
GE10681X012
PN 16/40
GE12898X012(1)
CL150 RF
GE10699X012
14B5835X032
CL300 RF
GE10700X012
14B5835X042
CL600 RF
GE10701X012
14B5835X052
SCH 40 BWE
GE10702X012
-----------
SCH 80 BWE
GE10703X012
PN 25/40
GE13594X012(1)
CL150 RF
GE10835X012
14B5836X032
CL300 RF
GE10839X012
14B5836X042
CL600 RF
GE10842X012
14B5836X052
SCH 40 BWE
GE10843X012
SCH 80 BWE
GE10844X012
CL150 RF
GE11447X012
24B5837X032
CL300 RF
GE11449X012
24B5837X042
CL600 RF
GE11451X012
24B5837X052
SCH 40 BWE
GE11452X012
24B5837X072
CL150 RF
GE19095X012
-----------
CL300 RF
GE19096X012
-----------
CL600 RF
GE19097X012
-----------
SCH 40 BWE
GE19093X012
-----------
SCH 80 BWE
GE19094X012
-----------
CL150 RF
-----------
FA144718X12
CL300 RF
-----------
FA144717X12
CL600 RF
-----------
FA144716X12
SCH 40 BWE
-----------
GE00715X012
WCC Steel
300 X 150
Tapped Inlet and Tapped Outlet
SWE
WCC Steel
150
8
Standard or Tapped Inlet
(Pilot Supply)
WCC Steel
80
BODY STYLE
END CONNECTION STYLE
WCC Steel
50
3
12 X 6
BODY MATERIAL
WCC Steel
LCC Steel
-----------
-----------
1. Not available for Standard body.
2. Not available for Tapped Inlet (Pilot Supply) body.
Table 5. EZH/EZHSO Series Travel Indicator Assemblies Part Numbers(1)
DESCRIPTION
MATERIAL
NPS 1 / DN 25
NPS 2 / DN 50
NPS 3 / DN 80
NPS 4 / DN 100
NPS 6, 8, 12 X 6 / DN 150,
200, 300 X 150
EZH and EZHSO Series
Nitrile (NBR)
ERSA01539A0
ERSA01546A0
ERSA01547A0
ERSA01549A0
ERAA30686A0
1. The assemblies include keys 138, 139, 140, 141, 142B, 143, 144, 145, 160 and 192.
Table 6. EZH/EZHSO Series Sleeve Assemblies Part Numbers
DESCRIPTION
EZHSO Series
NPS 1 / DN 25
ERCA02689A0
NPS 2 / DN 50
ERCA02690A0
NPS 3 / DN 80
ERCA02691A0
NPS 4 / DN 100
For Nitrile (NBR) and
(Fluorocarbon (FKM) disk:
M2201053X12
NPS 6, 12 X 6 and 8 / DN 150, 300 X 150 and 200
ERAA03693A0
For Polyurethane (PU)
disk: M2201053X32
EZH Series
24
-----------
-----------
-----------
M2201052X12
ERAA03692A0
EZH and EZHSO Series
L1
13 14
44
L2 L2
4
8 10
L2
L2 L2 L2
9
L1
8 15 16 17 18 19 20
10
21
22
11
23
10
24
25
L2 62
26
L2 8
L2 9
6
L2 8
27 S1
28 L2
L2 7
29 L2
5
30
L2 4
31
32
3
33 S1
2
34 L2
1
32
33 S1
TOP VIEW
140
160
138
139
38
140
141
L2
143
142B
L2
143
35
L2
145
144
IMPROVED TRAVEL
INDICATOR DETAIL
S2
6
VERSION WITHOUT
TRAVEL INDICATOR
DETAIL
FOR NPS 1 / DN 25
EZH SERIES
VERSION ONLY
FOR NPS 3 / DN 80
EZH SERIES
VERSION ONLY
NPS 1 THROUGH 3 / DN 25 THROUGH 80
GD89918_H
APPLY LUBRICANT (L) / SEALANT (S)(1):
L1 = LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE
L2 = SILICONE-BASED OR PTFE-BASED GREASE
S1 = ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS
S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
Figure 8. EZH Series Main Valve Assembly
25
EZH and EZHSO Series
43
35
39
36
37
59
37
60
GD89918_J
NPS 1 THROUGH 3 / DN 25 THROUGH 80
NPS 1 THROUGH 3 / DN 25 THROUGH 80
43
36
59
37
37
MLM1945_B
NPS 4 / DN 100
Figure 8. EZH Series Main Valve Assembly (continued)
26
EZH and EZHSO Series
TRAVEL INDICATOR DETAIL
38
192
VERSION
WITHOUT TRAVEL
INDICATOR DETAIL
138
139
140
71
141
L2
142B
160
L2
143
145
S2
144
44
13
14
10
83
35
70
73
S2
L2
72
69
S2
74
77
L2
75
15
16
17
L2
18
L2
8
L2
9
L2
8
10
19
11
20
L1
68
L2
8
L2
8
21
10
66
22
67
L2
23
64
6
5
63
L2
7
82
61
2
8
L2
9
L2
8
L2
8
L2
9
L2
8
L2
27
S1
3
1
34
33
L2
S1
32
31
30
29
L2
NPS 4 / DN 100
MLM1945_B
APPLY LUBRICANT (L) / SEALANT (S)(1):
L1 = LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE
L2 = SILICONE-BASED OR PTFE-BASED GREASE
S1 = ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS
S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
Figure 8. EZH Series Main Valve Assembly (continued)
27
EZH and EZHSO Series
44
138
139
140
141
71
160
142
L2
160
L2
143
30
145
S2
144
33
32
FOR NPS 8 / DN 200 ONLY
70
10
73
S2
72
10
69
L2
69
83
L2
157
14
158
15
157
16
13
17
11
L2
8
L2
8
L2
9
L2
18
20
L2
19
5
L2
8
66
21
L2
8
22
L2
64
L2
9
L2
8
L2
23
25
3
7
61
L2
8
L2
9
L2
8
29
L2
34
1
32
S3
33
NPS 6, 8, 12 X 6 / DN 150, 200, 300 X 150
APPLY LUBRICANT (L) / SEALANT (S)(1):
L2 = SILICONE-BASED OR PTFE-BASED GREASE
S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS
S3 = GENERAL PURPOSE MEDIUM BOND STRENGTH THREADLOCKER
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
Figure 8. EZH Series Main Valve Assembly (continued)
28
L2
30
2
ERAA01010_AA
27
L2
EZH and EZHSO Series
148
146
147 151 193 153
L2
L2
16
15
L1
17
L1
18
19
147
20
155
13
L2
4
L2
8
L2
9
L2
8
14
44
FOR NPS 1 / DN 25
EZHSO SERIES
VERSION ONLY
10
21
22
11
23
10
24
25
L2
62
L2
8
26
L2
9
6
L2
8
150
L2
7
149
152
5
29
L2
L2
4
28
L2
S1
3
27
2
30
1
154
34
L2
TOP VIEW
140
160
138
139
38
140
141
L2
143
L2
142B
143
35
L2
145
6
S2
144
IMPROVED TRAVEL
INDICATOR DETAIL
VERSION WITHOUT
TRAVEL INDICATOR DETAIL
FOR NPS 1 / DN 25
EZH SERIES VERSION ONLY
FOR NPS 3 / DN 80
EZH SERIES VERSION ONLY
NPS 1 THROUGH 3 / DN 25 THROUGH 80
GE42373_D
APPLY LUBRICANT (L) / SEALANT (S) :
L1 = LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE
L2 = SILICONE-BASED OR PTFE-BASED GREASE
S1 = ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS
S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS
(1)
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
Figure 9. EZHSO Series Main Valve Assembly
29
EZH and EZHSO Series
TRAVEL INDICATOR DETAIL
192
138
139
71
140
141
44
160
L2
142B
L2
143
S2
144
L2
146
14
10
83
35
151
193
70
153
147
L2
L2
156
69
L2
77
74
L2
75
15
16
17
145
18
11
148
19
10
L2
157
L2
158
L2
157
L2
8
L2
8
20
21
67
66
68
10
22
23
64
6
8
L2
9
L2
8
L2
8
L2
9
L2
8
L2
149
27
L2
61
3
5
63
L2
7
13
L2
S2
150
152
2
34
30
154
29
1
L2
L2
NPS 4 / DN 100
GE32477_D
APPLY LUBRICANT (L) / SEALANT (S)(1):
L1 = LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE
L2 = SILICONE-BASED OR PTFE-BASED GREASE
S1 = ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS
S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
Figure 9. EZHSO Series Main Valve Assembly (continued)
30
EZH and EZHSO Series
138
44
140
71
141
L2
143
194
L2
142
10
194
35
146
147
151
153
L2
10
69
83
75
139
S2
145
193
144
157
L2
158
L2
157
16
17
18
20
L2
19
11
21
5
L2
15
L2
8
22
23
25
L2
8
L2
9
L2
8
8
9
8
L2
66
13
7
61
149
64
L2
150
L2
8
L2
9
L2
8
L2
S2
152
3
L2
29
27
L2
34
1
L2
32
33
30
L2
2
2
L2
NPS 6, 8, 12 X 6 / DN 150, 200, 300 X 150
198
197
L2
34
FOR NPS 8 / DN 200 ONLY
ERAA24194_02
APPLY LUBRICANT (L) / SEALANT (S)(1):
L2 = SILICONE-BASED OR PTFE-BASED GREASE
S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
Figure 9. EZHSO Series Main Valve Assembly (continued)
31
EZH and EZHSO Series
48
TYPE SA/2
46
47
“L”
PORT
47
“B”
PORT
TYPE PRX/120-AP
52
51
49
159
BACK CHECK VALVE
NPS 1 THROUGH 3 / DN 25 THROUGH 80
GE01727_E
Figure 10. EZH Series Single Pilot Mounting Assembly
32
VIEW: A-A
EZH and EZHSO Series
EZH SERIES
NPS 4 / DN 100
46
50
“L” PORT
TYPE SA/2
47
TYPE PRX/120-AP
“B” PORT
BACK CHECK VALVE
47
48
159
49
51
52
49
NPS 4, 6, 12 X 6 AND 8 / DN 100, 150, 300 X 150 AND 200
GE46932_C
Figure 10. EZH Series Single Pilot Mounting Assembly (continued)
33
EZH and EZHSO Series
TYPE SA/2
48
47
46
“L”
PORT
49
47
“B”
PORT
TYPE PRX/120-AP
159
BACK CHECK VALVE
VIEW: A-A
52
49
50
48
54
GE01790_D
NPS 1 THROUGH 3 / DN 25 THROUGH 80
Figure 11. EZH Series Working Monitor Pilot Mounting Assembly
34
EZH and EZHSO Series
EZH SERIES
NPS 4 / DN 100
46
TYPE SA/2
159
BACK CHECK VALVE
56
TYPE PRX/120-AP
47
BACK CHECK VALVE
47
48
159
49
48
52
50
49
54
NPS 4, 6, 12 X 6 AND 8 / DN 100, 150, 300 X 150 AND 200
GE47004_B
Figure 11. EZH Series Working Monitor Pilot Mounting Assembly (continued)
35
EZH and EZHSO Series
48
“L” PORT
46
TYPE PRX/120
“B” PORT
47
TYPE SA/2
51
49
159
BACK CHECK VALVE
50
52
49
“A” PORT
GG04807_B
NPS 1 THROUGH 3 / DN 25 THROUGH 80
Figure 12. EZHSO Series Single Pilot Mounting Assembly
36
EZH and EZHSO Series
EZH SERIES
NPS 4 / DN 100
46
“L” PORT
TYPE SA/2
TYPE PRX/120-AP
50
“B” PORT
BACK CHECK VALVE
47
48
159
49
52
49
GE45387_B
NPS 4, 6, 12 X 6 AND 8 / DN 100, 150, 300 X 150 AND 200
Figure 12. EZHSO Series Single Pilot Mounting Assembly (continued)
37
EZH and EZHSO Series
1
2
3
4
5
6
4
7
35
8
26
9
11
10
18
4
11
25
12
13
24
14
23
15
22
16
21
17
11
14
10
20
11
13
19
TYPE PRX/120-AP OR PRX/125-AP
18
TYPE PRX/120 OR PRX/125
L
33
S
S
27
L
27
28
28
B
B
29
29
D
30
D
32
31
28
R
30
28
30
TYPE PRX/125 OR PRX/125-AP
TYPE PRX/120 OR PRX/120-AP
S - BLEED PORT
B - SUPPLY PORT
L - LOADING PORT
A - SENSING PORT
D - DAMPER
R - RESTRICTOR
Figure 13. PRX Series Pilot Assemblies
38
31
34
EZH and EZHSO Series
19
20
H
HOT WATER
INLET/OUTLET
H
HOT WATER
INLET/OUTLET
1
21
2
3
SENSING
PORT
4
V
5
18
6
17
R
OUTLET
PORT
16
A
8
A
15
9
14
M
7
10
INLET
PORT
13
12
11
LM1162
Figure 14. Type SA/2 Pilot Supply Filter Assemblies
39
EZH and EZHSO Series
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D103077X012 © 2003, 2017 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 11/17.
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