Cash Valve BBC Pressure Regulators Owner's manual

Cash Valve BBC Pressure Regulators Owner's manual
CASH VALVE TYPE BBC PRESSURE REGULATOR
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation, these instructions must be carefully read and understood.
INSTALLATION INSTRUCTIONS
The Type BBC regulator should be installed in
the horizontal position with the spring chamber
upright. For other installation requirements,
consult the factory. For ease of operation and
maintenance, it is suggested that manual
shut-off valves be installed upstream and
downstream from the valve. Before installing
the valve, the piping and valve should be
thoroughly flushed out to remove any foreign
material. Install the valve with the inlet pipe
fitted to the inlet connection identified on the
valve body. Use a good pipe joint compound on
the male pipe threads and do not overtighten
the valve connections.
OPERATION INSTRUCTIONS
DESCRIPTION
The Type BBC is a direct acting, single
seated, spring loaded diaphragm-type
pressure reducing and regulating valve that
automatically reduces a high inlet pressure to
a lower delivery pressure and maintains the
lower pressure within reasonably close limits.
SPECIFICATION DATA
Service:Heavy oils, dirty liquids and
liquids with a high viscosity
Sizes:⅜", ½", ¾", 1", 1¼" and 1½"
Connections:
Threaded
Body:
Iron, Bronze
Maximum
temperature:
400°F
Maximum
initial pressure:
Iron - 200 psi
Bronze - 400 psi
Online pressure
range:
2-200 psi
Emerson.com/FinalControl
Adjusting the delivery pressure
The regulator's delivery pressure setting is
adjusted by turning the adjusting screw (2) at
the top of the spring chamber after loosening
the adjusting screw lock nut (3). To increase
the delivery pressure, turn the adjusting
screw clockwise (into the spring chamber).
To decrease the delivery pressure, turn the
adjusting screw counter-clockwise (out of the
spring chamber). Tighten the adjusting screw
lock nut after the adjustment has been made.
NOTE
When adjusting the delivery pressure, draw flow
and shutoff downstream to check pressure set.
© 2020 Emerson. All rights reserved.
VCIOM-15023-EN 20/08
CASH VALVE TYPE BBC PRESSURE REGULATOR
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
MAINTENANCE INSTRUCTIONS
The following procedures are provided for
servicing the recommended spare parts for the
Type BBC regulator. Repair parts can easily be
installed without removing the regulator from
the line.
CAUTION
Before attempting to replace any spare parts be
sure to shut off all pressure connec-tions to the
valve. With the valve closed, however, system
pressure could still be locked between the
shut-off valve and the inlet and/or outlet sides of
the regulator. Before proceeding with any valve
service be certain to relieve the pressure from
BOTH sides of the regulator.
Refer to the Type BBC regulator cut away
view for parts identification.
Servicing Diaphragm(s) and Pressure Spring
1. Loosen the lock nut and turn the adjusting
screw counterclockwise until the pressure
spring is no longer under tension. When
reassembling, run the adjusting screw down
until the lock nut almost touches the spring
chamber. This will give you approximately
the same set as before disassembly.
2. Remove the assembly screws securing
the spring chamber to the body. During
reassembly, tighten the screws evenly in a
star pattern.
3. Remove the spring chamber. Then remove
the spring button, pressure spring, and
pressure plate.
4. Remove the diaphragm(s) and diaphragm
gasket (a diaphragm gasket is only
present when construction calls for metal
diaphragms).
5. Remove the pusher post button. During
reassembly, ensure the pusher post button
is centered properly on the pusher post.
6. Inspect all parts for wear and damage and
replace if necessary. Reassemble parts
in reverse order. DO NOT OVERTIGHTEN.
Follow the Operation Instructions to reset
the delivery pressure.
2
3
5
6
7
8
9
Servicing the Piston, Seat Ring, and Plug
12
Gasket
13
1. Loosen the lock nut and turn the adjusting
screw counterclockwise until the pressure
spring is no longer under tension. When
reassembling, run the adjusting screw down
until the lock nut almost touches the spring
chamber. This will give you approximately
20
the same set as before disassembly.
2. Remove the bottom plug. Take care, as the
bottom plug is under slight tension as a
result of the piston spring acting against the PARTS LIST
bottom plug. During reassembly, tighten the
Item
Description
screws evenly in a star pattern.
2
Adjusting screw
3. Remove the piston and piston spring.
3
Lock nut
4. Flush the valve body to remove any debris.
5
Identification tag
5. Remove the hexagon seat ring. When
6
Spring seat
reassembling, torque the seat ring to
7
Adjusting spring
350 in-lbs.
8
Spring chamber
6. Inspect all parts for wear and damage. If
9
Assembly screws and nuts
either the seat ring or piston need replacing, 10
Pressure plate
it is necessary to replace both as both parts
11
Diaphragms
wear equally.
12
Diaphragm gasket
7. Reassemble the valve in reverse order. DO
(for metal diaphragms only)
13
Body
NOT OVERTIGHTEN. Follow the Operation
14
Pusher post button
Instructions to reset the delivery pressure.
15
17
18
19
20
10
11
14
17
15
18
19
Body seat
Bottom plug gasket
Piston assembly
Piston spring
Bottom plug assembly
ASSEMBLY SCREW TORQUE VALUE (IN.-LBS.)
Valve Size (In.)
Metal Diaphragm
100
Rubber Diaphragm 70
¼
⅜
150
100
½
200
150
¾
200
200
1
250
200
1¼
350
250
1½
350
250
2
350
250
2
CASH VALVE TYPE BBC PRESSURE REGULATOR
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
REPAIR PARTS INFORMATION
Item
2
3
5
6
7
8
Description
Adjusting screw
Lock nut
Identification tag
Spring button
Pressure spring
Spring chamber
9
10
11•
Assembly screws and nuts
Pressure plate
Diaphragms
12•
13
Diaphragm gasket (for metal diaphragms only)
Body
14
15•
17•
18•
19
20
Pusher post button
Body seat
Bottom plug gasket
Piston
Piston spring
Bottom plug assembly
Notes
•
*
Material
Steel
Steel
Aluminum
Steel
Steel
Cast iron
Bronze
Steel
Cast iron
Buna-N
Monel
Aramid Fibre
Cast iron
Bronze
Brass
Stainless steel
Aramid Fibre
Stainless steel
Monel
Brass, Stainless Steel
No. required
1
1
1
1
1
1
1
6
1
1
3 or 4*
1
1
1
1
1
1
1
1
1
Recommended spare parts.
⅜" through ¾" require 3 diaphragms, 1" through 1½" require 4 per set.
SPECIFICATIONS
Each Type BBC pressure regulator is equipped with a pressure spring selected to provide the
desired outlet or reduced pressure setting. The range of adjustment or satisfactory "working
range" of individual springs is shown for each valve size. Every regulator has the "set" pressure
and range of adjustment stamped on a tag fastened to the valve. The ranges shown are
recommended for best performance.
3
CASH VALVE TYPE BBC PRESSURE REGULATOR
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SPRING RANGES
⅜"
2-15
10-50
40-80
75-150
125-200
----
½"
---2-35
20-50
40-120
100-200
----
DIMENSIONS
Pipe size
(NPS)
⅜
½
¾
1
1¼
1½
A
3⅞
4½
5⅛
5⅞
63⁄16
63⁄16
Range of adjustment (in ps)
¾"
1"
2-15
2-15
10-30
10-40
20-75
30-60
60-125
50-100
100-200
90-150
---125-200
Dimensions
B
4½
5⅛
4⅝
6¼
6⅛
6⅛
C
1¾
2½
1⅞
2⅛
2⅝
2⅝
1¼"
2-20
10-30
20-100
100-175
100-200
----
1½"
2-20
10-30
20-100
90-150
100-175
100-200
Ship. weight (lbs)
Iron
Bronze
5
5½
7½
8
9
10
12
16
18
20
18
20
HOW TO ORDER
To order repair parts, refer to the cut away view
of the Type BBC to identify the part required.
When ordering, please use the part names
listed and provide the valve serial number
stated on the identification tag. Also state the
following:
“Repair Parts for Type BBC" and provide
1. Valve size
2. Service (stem, water, oil, etc.)
3. Inlet pressure
4. Outlet or delivery pressure range and
setting
5. Part description
6. Quantity of each part
7. Valve assembly or serial number stated
on the metal identification tag under the
adjusted screw lock nut
VCIOM-15023 © 2020 Emerson Electric Co. All rights reserved 08/20. Cash Valve is a mark owned by one of the companies in the Emerson Automation
Solutions business unit of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their
prospective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be
construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed
by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time
without notice.
Emerson Electric Co. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance
of any Emerson Electric Co. product remains solely with the purchaser.
Emerson.com/FinalControl
4
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