Type EZR Series Pressure Reducing Regulator

Bulletin 71.2:EZR

November 2015

EZR Series Pressure Reducing Regulator

Robust

Thoroughly Tested

Quiet Operation

Exceptional Design

W7399

TYPE EZR REGULATOR

Internally Actuated

NPS 1, 1-1/4 x 1, 2 x 1, 2, 3, 4, 6 and 8 / DN 25, 32 x 25, 50 x 25, 50,

80, 100, 150, 200 and EW Body Sizes

W8136

TYPE EZROSX WITH INTEGRAL

SLAM-SHUT DEVICE

Figure 1. EZR Series Pressure Reducing Regulator

www.fisherregulators.com

2

Bulletin 71.2:EZR

8

W7398

TRIM PACKAGE

4

W7562

TYPE 161AY PILOT

W8346

TYPE PRX PILOT

10

1

2

TYPE 161EB PILOT

11

3

7

2

W7344

TYPE EZR PRESSURE REDUCING REGULATOR

Figure 2. EZR Series Features and Benefits

6

12

12

W4570-1

TYPE 161EB

PILOT MAINTENANCE

Introduction

The Type EZR pilot-operated, pressure reducing regulator is designed for natural gas transmission/distribution systems and industrial/commercial applications. The Type EZR provides smooth, quiet operation, tight shutoff and long life, even in dirty service. Its internally actuated metal plug eliminates disadvantages associated with boot-style regulators, and the specially engineered flow path deflects debris, protecting the seat from damage and erosion. The

Type EZR is used in conjunction with a 161EB or 161AY Series pilot and Type 112 restrictor or with a PRX Series pilot (with integral restrictor). The Type EZR pressure reducing regulator can be converted to a high pressure relief valve or backpressure regulator by simply changing to a relief piloting system (refer to Bulletin 71.4:EZR).

An optional inlet strainer prevents large particles from entering the main valve, limiting damage to internal parts. A

Type 252 pilot supply filter (optional) can be added to keep pipeline debris from entering the pilot. For underpressure and/or overpressure protection, the Type EZR is available with an integral slam-shut device.

Bulletin 71.2:EZR

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Features and Benefits

Tight Shutoff—The EZR Series uses a diaphragm and metal plug, eliminating the disadvantages of bootstyle regulators. When open, the metal plug deflects particles and debris away from the diaphragm. The result is enhanced resistance to particle erosion, which provides excellent shutoff over an extended life. When closed, loading pressure and the main spring push the diaphragm onto the tapered-edged seat on the cage.

Debris Protection—The specially engineered flow path, along with the metal plug, allows flow through the regulator without seat impingement. The addition of an optional inlet strainer prevents large particles from entering the regulator, eliminating damage to internal parts.

An optional Type 252 pilot supply filter collects pipeline debris before it reaches the pilot, reducing the possibility of pilot clogging.

Quiet Operation—The specially engineered flow path allows flow through the center of the cage and down through the cage slots—reduces operational noise, making the EZR Series an exceptionally quiet regulator.

High Accuracy—Multiple outlet pressure ranges and narrow proportional bands offered by the

161EB Series, 161AY Series and Type PRX/120 pilots provide the EZR Series with tight, accurate control.

For applications requiring tighter control, using a

Type 161AYM, 161EBM or PRX/120 pilot will increase the accuracy of the regulator.

Long Life—The robust design of the EZR Series with its metal plug and specially engineered flow path allows flow through the regulator without seat impingement. The diaphragm design eliminates the possibility of taking a “set”, a common problem with boot-style regulators. To prevent damage, the diaphragm is fully supported in both the open and closed positions. These features enable the

EZR Series components to work longer with less wear and tear.

Full Usable Capacity—Fisher ® branded regulators are laboratory tested. 100 percent of the published flow capacity can be used with confidence.

Thorough Laboratory Testing—Emerson Process

Management Regulator Technologies, Inc. state-ofthe-art flow laboratory allows thorough testing of all new designs. Tests are conducted on Fisher branded regulators for performance features such as flow, strength, shutoff, material compatibility and noise.

Easy In-Line Maintenance—Top-entry design reduces maintenance time. Trim parts can be inspected, cleaned and replaced without removing the body from the pipeline. No special alignment

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10

W8136

W7345

9

13

14

8

5

Figure 2. EZR Series Features and Benefits (continued)

is required when replacing the diaphragm. The

EZR Series incorporates E-body construction, making it easy to change existing E-body regulators and control valves with an EZR Series trim kit.

O-ring Design—The EZR Series uses elastomer

O-rings instead of gaskets, reducing maintenance and assembly time.

In-Service Travel Indicator—The optional travel indicator responds to the precise movement of the diaphragm and plug assembly and shows the actual valve position. The travel indicator makes in-service inspection and troubleshooting easy. Also, it can be used for remote alarming and monitoring stem position when combined with the Type 4310 or 4320 wireless position monitor.

3

Bulletin 71.2:EZR

11

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Versatility—The EZR Series uses the E-body, making available the standard construction materials and end connections (ASME and EN) used by other E-body regulators and control valves. The 161AY Series pilots can handle inlet pressures up to 150 psig / 10.3 bar and outlet pressure from 6 in. w.c. to 7 psig /

15 mbar to 0.48 bar. The 161EB Series pilots can handle inlet pressures up to 1500 psig / 103 bar and outlet pressures from 5 to 700 psig / 0.35 to 48.3 bar.

The Type PRX pilots can handle inlet pressures up to

1480 psig / 102 bar and outlet pressures up to

1000 psig / 69.0 bar.

By changing to a relief piloting system (6358 Series pilots), a Type EZR pressure reducing regulator easily becomes a very effective high volume relief valve or backpressure regulator (refer to Bulletin 71.4:EZR).

Easily Maintained Pilots—The pilots are designed to allow quick and simple in-line trim inspection and parts replacement.

Powder Paint Coating—Fisher ® regulators are powder paint coated providing superior impact, abrasion and corrosion resistance.

Slam-shut device— Type EZROSX with slamshut device provides either overpressure (OPSO) or overpressure and underpressure (OPSO/UPSO) protection by completely shutting off the flow at the downstream system.

Pilot Type Descriptions

Type 161AY—Low-pressure pilot with an outlet pressure range from 6 in. w.c. to 7 psig / 15 mbar to

0.48 bar. Pilot bleeds (exhausts) downstream through the sense (control) line.

Type 161AYM—The monitor version of the Type 161AY pilot. The pilot bleed (exhaust) is isolated from the sense

(control) line. This pilot is used in monitoring systems requiring an isolated pilot bleed (exhaust).

Type 161EB—High accuracy pilot with an outlet pressure range from 5 to 350 psig / 0.34 to 24.1 bar.

Pilot bleeds (exhausts) downstream through the sense

(control) line.

Type 161EBM—The monitor version of the Type 161EB pilot. The pilot bleed (exhaust) is isolated from the sense

(control) line. This pilot is used in monitoring systems requiring an isolated pilot bleed (exhaust).

Type PRX/120—Outlet pressure range of 14.5 to

435 psig / 1 to 30.0 bar. The Type PRX/120 can be used as the pilot on single stage pressure reducing regulators, as the monitor pilot or as the working pilot in wide-open monitor systems, or as the working pilot for monitoring and working regulators in the working monitoring systems. The Type PRX has a double diaphragm which provides increased accuracy and sensitivity, an integral restrictor adjustment to allow adjustable opening and closing speeds and a damper adjustment to allow adjustments to make for inlet pressure variability and loading pressure oscillations.

Type PRX/120-AP—Outlet pressure range of 435 to

1000 psig / 30.0 to 69.0 bar. The Type PRX/120-AP can be used as the pilot on single stage pressure reducing regulators, as the monitor pilot or as the working pilot in wide-open monitor systems, or as the working pilot for monitoring and working regulators in the working monitoring systems.

Type PRX/125 (Monitor Pilot Only)—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. Always order with Type PRX-120 in working monitor applications.

Type PRX/125-AP (Monitor Pilot Only)—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. Always order with Type PRX/120-AP in working monitor applications.

Pilot Selection Considerations

When selecting pilots to use with the EZR Series:

Use the 161 Series pilots for applications where normal flow is typically 5% and greater of maximum rated flow.

The accuracy and control of the 161 Series pilots can be increased using the series’ monitor pilots (M).

When the potential for low flow (< 5% of maximum rated flow) for extended periods exists due to the regulator being oversized or operational constraints the Type PRX pilot is recommended.

Additional details on how to set up the pilots for various flow rates is provided in the Type EZR Instruction

Manual. If you have questions on which pilot to use for your application contact your local Sales Office.

Optional Pilot Supply Filter

The Type 252 pilot supply filter prevents pipeline debris from entering the pilot, a primary cause of pilot clogging. The aluminum body is rated for 2150 psig /

148 bar and the stainless steel body for 2750 psig /

190 bar. Both are available in standard or extended length with a pipe plug or a drain valve. When the upstream system is free of debris, the EZR Series may be installed without a filter.

4

Bulletin 71.2:EZR

Specifications

This section lists the specifications for the EZR Series pressure reducing regulator. The set pressure range for a pilot as it comes from the factory appears on the spring case. Other information for an individual main valve appears on the nameplate.

Available Configurations

Type EZR: Pilot-operated pressure reducing regulator for low to high outlet pressure

Type EZROSX: Type EZR with a Type OS2 slamshut device for overpressure (OPSO) or overpressure and underpressure (OPSO/UPSO) protection

Main Valve Body Sizes, End Connection Styles and Structural Design Ratings

See Table 1

Maximum Inlet Pressures and Pressure Drops (1)

Main Valve: See Table 7

Pilots: See Table 3

Restrictor: 1500 psig / 103 bar

Outlet (Control) Pressure Ranges

See Table 2

Main Valve Plug Travel

NPS 1, 1-1/4 x 1, 2 x 1 / DN 25, 32 x 25, 50 x 25:

0.37 in. / 9.4 mm

NPS 2 / DN 50: 0.68 in. / 17 mm

NPS 3 / DN 80: 0.98 in. / 25 mm

NPS 4 / DN 100: 1.19 in. / 30 mm

NPS 6 / DN 150: 1.5 in. / 38 mm

NPS 8 / DN 200: 1.75 in. / 44 mm

Minimum and Maximum Differential Pressures (1)

See Tables 4 and 8

Main Valve Flow Direction

(1)(2)

Up through the center of the cage and down through the cage slots

Proportional Bands

See Table 2

Regulating Capacities

See Tables 13, 14 and 15

Flow Coefficients

Main Valve: See Tables 9 and 10

Pilots: See Table 11

Restrictor: See Table 12

IEC Sizing Coefficient

See Table 8

Pressure Registration

External

Temperature Capabilities

See Table 6

Approximate Weights

See Table 18

(1)

Options

• Pre-piped Pilot Supply and Pilot Bleed

• Travel Indicator

• Inlet Strainer

• Type 252 Pilot Supply Filter

• Trim Package

• Restricted Capacity Trim

• Pilot Diaphragm for Pressure Loading

Construction Materials

EZR Series Main Valve

Body: Cast iron, WCC steel or LCC steel

Bonnet: Steel

Bonnet Bushing: Stainless steel

Cage: Stainless steel

Spring: Zinc-plated steel or Stainless steel

Top Plug: Stainless steel

Bottom Plug: Stainless steel

Inlet Strainer: Stainless steel

Strainer Replacement Shim: Stainless steel

Diaphragm: Nitrile (NBR) or Fluorocarbon (FKM)

O-rings: Nitrile (NBR) or Fluorocarbon (FKM)

Flanged Locknut: Zinc-plated steel

Backup Rings: Polytetrafluoroethylene (PTFE)

Upper Spring Seat: Stainless steel

Indicator Protector and Cover: Plastic

Indicator Stem: Stainless steel

Indicator Fitting: Stainless steel

Travel Indicator Plug: Stainless steel

Restricted Trim

E-Ring: Carbon steel

Restrictor Plate: Stainless steel

161EB Series Pilots

Body: Stainless steel

Spring Case: Stainless steel

Body Plug: Stainless steel

Control Spring: Zinc-plated steel

Valve Plug: Nitrile (NBR) or Fluorocarbon (FKM)

Adjusting Screw: Zinc-plated steel


Diaphragm Limiter: Stainless steel

O-rings: Nitrile (NBR)

161AY Series Pilots

Body: Cast iron

Spring Case and Lower Casing: Ductile iron

Stem Guide: Stainless steel

Control Spring: Zinc-plated steel

Lever Assembly: Stainless steel

Pusher Post: Stainless steel

1. The pressure/temperature limits in this Bulletin and any applicable standard or code limitation should not be exceeded.

2. Ratings and end connections other than ASME standards can usually be provided; contact your local Sales Office.

- continued -

5

Bulletin 71.2:EZR

6

Specifications (continued)

161AY Series Pilots (continued)


O-rings: Nitrile (NBR) or Fluorocarbon (FKM)

Orifice: Stainless steel

Disk Assembly: Nitrile (NBR) or Fluorocarbon (FKM)

PRX Series Pilots

Body: Steel

Trim: Stainless steel

Elastomers: Nitrile (NBR) or Fluorocarbon (FKM)

Disk Material: Polyurethane (PU) or

Fluorocarbon (FKM)

Mounting Parts

Pilot Mounting Pipe Nipple: Plated steel

Tubing and Fittings: Stainless steel

Type 112 Restrictor

Body: Stainless steel

Groove Valve: Stainless steel

Retainer: Stainless steel

Pipe Plug: Stainless steel

O-rings: Fluorocarbon (FKM)

Type 252 Pilot Supply Filter

Body: Aluminum or Stainless steel

Filter Cartridge: Polyethylene

O-rings: Nitrile (NBR)

Drain Valve or Pipe Plug: Stainless steel

Slam-Shut Device

Mechanism Box: Aluminum alloy

First and Second Stage Mechanism: Steel

Diaphragm: Nitrile (NBR)

Bellows: Stainless steel

Table 1. Main Valve Body Sizes, End Connection Styles and Body Ratings

TYPE

EZR

MAIN VALVE BODY SIZE

NPS DN

2 x 1, 2, 3, 4 and 6

1, 1-1/4 x 1 (3) ,

2 x 1, 2, 3, 4,

6 x 4

8 x 6

(4)

(4)

, 8 x 4 (4) , 6,

and 12 x 6 (4)

50 x 25, 50, 80, 100 and 150

25, 32 x 25 (3) , 50 x 25, 50,

80, 100, 150 x 100

200 x 100 (4)

200 x 150

(4)

, 150,

(4) and 300 x 150 (4)

,

MAIN VALVE

BODY MATERIAL

Cast iron

WCC Steel

END CONNECTION STYLE

NPT 2 x 1 and 2 only

CL125 FF

CL250 RF

CL150 RF

CL300 RF

CL600 RF or BWE

CL150 RF

(1)

NPT or SWE NPS 1, 2 x 1 and

2 only / DN 25, 50 x 25 and 50 only

STRUCTURAL DESIGN RATING psig

400

200

500

1500

290

750

1500

290

8 200 LCC Steel CL300 RF

CL600 RF

750

1500

EZROSX

1, 2 x 1, 2, 3,

4 and 6

25, 50 x 25, 50, 80, 100 and 150

WCC Steel

CL150 RF

CL300 RF

290

750

CL600 RF 1500

1. Ratings and end connections for other than ASME standard can usually be provided. Contact your local Sales Office for assistance.

2. See Tables 3, 6, 7 and 8 for diaphragm materials and additional pressure ratings.

3. Available in steel NPT only.

4. NPS 6 x 4, 8 x 4, 8 x 6, 12 x 6 / DN 150 x 100, 200 x 100, 200 x 150, 300 x 150 Types EZR and 399 bodies are not the same as the EW valve bodies and are not interchangeable.

bar

28.0

14.0

34.0

103

20.0

52.0

103

20.0

52.0

103

20.0

52.0

103

(2)

Table 2. Outlet (Control) Pressure Ranges and Typical Proportional Bands

TYPE

161AY or

161AYM

161EB or

161EBM

OUTLET (CONTROL) PRESSURE RANGE psig

6 to 15 in. w.c.

0.5 to 1.2

1.2 to 2.5

2.5 to 4.5

4.5 to 7

5 to 15

10 to 40

30 to 75

70 to 140

130 to 200

200 to 350

bar

15 to 37 mbar

0.03 to 0.08

0.08 to 0.17

0.17 to 0.31

0.31 to 0.48

0.35 to 1.0

0.69 to 2.8

2.1 to 5.2

4.8 to 10

9 to 14

14 to 24

PROPORTIONAL BAND psig

1 in. w.c.

1 in. w.c.

0.5

0.5

0.5

0.5

0.5

0.6

1.3

1.5

3

6

(1)(3) bar

3 mbar (2)

3 mbar (2)

0.03

(2)

0.03

(2)

0.03

(2)

0.03

(2)

0.03

(2)

0.04

(2)

0.09

(2)

0.10

(2)

0.21

(2)

0.41

Part Number

1B653927022

1B537027052

1B537127022

1B537227022

1B537327052

17B1260X012

17B1262X012

17B1259X012

17B1261X012

17B1263X012

17B1264X012

15A9258X012

PILOT CONTROL SPRING INFORMATION

Color Code

Olive drab

Yellow

Light green

Light blue

Black

White

Yellow

Black

Green

Blue

Red

Green

Wire Diameter

In.

0.105

0.114

0.156

0.187

0.218

0.120

0.148

0.187

0.225

0.262

0.294

0.243

cm

0.27

0.29

0.40

0.48

0.55

0.31

0.38

0.48

0.57

0.67

0.75

0.62

Free Length

In.

3.75

4.31

4.13

3.94

4.13

3.75

3.75

4.00

3.70

3.85

4.22

1.88

cm

9.53

10.95

10.49

10.0

10.49

161EB (4)

TYPE

PRX/120

PRX/125

30 to 300 2.1 to 20.7

OUTLET (CONTROL) PRESSURE RANGE psig

14.5 to 26

23 to 44

41 to 80

73 to 123

116 to 210

203 to 334

319 to 435

bar

1 to 1.8

1.6 to 3.0

2.8 to 5.5

5.0 to 8.5

8 to 15

14 to 23

22 to 30

ACCURACY CLASS (AC)

2.5%

2.5%

2.5%

2.5%

1%

1%

1%

(1)

Part Number

M0255240X12

M0255230X12

M0255180X12

M0255220X12

M0255210X12

M0255200X12

M0265860X12

PILOT CONTROL SPRING INFORMATION

Color Code

Wire Diameter

In.

cm

Yellow

Green

Blue

Black

Silver

Gold

Aluminum

0.110

0.126

0.138

0.157

0.177

0.197

0.236

0.28

0.32

0.35

0.40

0.45

0.50

0.60

Free Length

In.

2.16

2.16

2.00

2.00

cm

5.49

5.49

5.10

5.10

PRX/120-AP

PRX/125-AP

435 to 1000 30 to 69 1% M0273790X12 Clear 0.335

0.85

3.93

10.0

1. Proportional band and Accuracy Class include outlet pressure drop plus hysteresis (friction), but do not include lockup.

2. Proportional band was determined with a pressure drop ranging from 50 to 150 psig / 3.5 to 10 bar. Approximately double the proportional band if the pressure drop is less than 50 psig / 3.5 bar.

3. With Type 112 restrictor set on 2. With Type PRX restrictor turn the restrictor screw one turn counterclockwise from fully seated.

4. Should only be used as the intermediate reduction pilot on the Type EZR worker/monitor systems.

9.53

9.53

10.16

9.40

9.78

10.72

4.78

Bulletin 71.2:EZR

Table 3. Pilot Pressure Ratings

TYPE

MAXIMUM INLET PRESSURE

MAXIMUM EMERGENCY OUTLET PRESSURE

OR MAXIMUM EMERGENCY

SENSE PRESSURE (1)

161AY

161EB

161AYM

psig

150

1500

150

bar

10

103

10

psig

150

1200

150

bar

10

83

10

psig

150

161EBM

PRX Series

1500

1480

103

102

1200

1480

83

102

1500

1480

1. Maximum pressure to prevent the casings from bursting during abnormal operation (leaking to atmosphere and internal parts damage might occur).

MAXIMUM BLEED

(EXHAUST) PRESSURE

FOR MONITOR PILOT bar

- - - -

10

103

102

Table 4. Main Valve Minimum Differential Pressures (1)

MAIN VALVE BODY SIZE

NPS

1, 1-1/4 x 1

DN

25, 32 x 25

MAIN SPRING

PART NUMBER

AND COLOR

19B2400X012, Light Blue

GE12727X012, Black

DIAPHRAGM

MATERIAL

17E68 and 17E88

17E97

17E68 and 17E88

MINIMUM DIFFERENTIAL, PERCENT OF CAGE CAPACITY

For 90% Capacity For 100% Capacity

100% Trim 60% Trim psid bar d psid bar d

30% Trim psid bar d



24 1.7

29 2.0

31 2.2

24 1.7

31 2.2


40 2.8

35

30

2.5

2.1

38

35

2.7

2.4

42

39

2.9

2.7

35

30

2.5

2.1

39

36

2.7

2.5

52

52

3.6

3.6

19B2401X012,

Black with White Stripe

(3)

19B2400X012, Light Blue

17E88 and 17E97 43 3.0

50 3.4

56 3.9

43 3.0

53 3.7

2 x 1 50 x 25

19B2401X012,

Black with White Stripe

17E68 and 17E88

17E97

17E68 and 17E88

24

43

43

1.7

3.0

3.0

29

50

50

2.0

3.4

3.4

31

56

56

2.2

3.9

3.9

24

43

43

1.7

3.0

3.0

31

53

53

GE12501X012,

Red Stripe (3)

19B0951X012, Yellow (2)

17E97 68 4.7

73 5.0

88 6.1

72 5.0

81 5.6

2 50

18B2126X012, Green

17E68 and 17E88

17E97

17E68 and 17E88

12

24

18

0.8

1.7

1.2

15

25

20

1.0

1.7

1.4

15

26

22

1.0

1.8

1.5

12

24

19

0.8

1.7

1.3

25

30

26

18B5955X012, Red (3)

GE05504X012, Purple (3)

T14184T0012, Yellow (2)

17E88 and 17E97 29 2.0

29 2.0

31 2.1

31 2.1

35 2.4

3 80 19B0781X012, Light Blue

17E68 and 17E88

17E97

17E68 and 17E88

16

23

21

1.1

1.6

1.5

19

23

22

1.3

1.6

1.5

24

23

28

1.7

1.6

1.9

23

23

28

1.6

1.6

1.9

23

23

28

19B0782X012, Black

T14184T0012, Yellow

(3)

(2)

17E88 and 17E97

17E68 and 17E88

17E97

32

10

16

2.2

0.7

1.1

33

12

17

2.3

0.8

1.2

43

14

21

3.0

1.0

1.5

38

25

34

2.6

1.7

2.3

38

25

34

4, 6 x 4 and 8 x 4

100, 150 x 100 and 200 x 100

18B8501X012, Green

18B8502X012, Red (3)

19B0364X012, Yellow (2)

17E68 and 17E88

17E88 and 17E97

17E97

17E88

16

21

10

10

1.1

1.5

0.7

0.7

17

24

11

13

1.2

1.7

0.8

0.9

20

26

14

13

1.4

1.8

1.0

0.9

30

40

12

12

2.1

2.8

0.8

0.8

30

40

16

21

6, 8 x 6 and 12 x 6

150, 200 x 150 and 300 x 150

19B0366X012, Green

19B0365X012, Red (3)

GE09393X012, Yellow (2)

GE09396X012, Green

17E97

17E88

17E88 and 17E97

14

17

23

16

20

1.0

1.2

1.6

1.1

1.4

22

21

29

1.5

1.5

2.0

22

21

29

1.5

1.5

2.0

19

20

30

19

23

1.3

1.4

2.1

1.3

1.6

29

36

41

8 200 17E97 - - - - - - - - - -

GE09397X012, Red (3) 26 1.8

30 2.1

1. See Table 1 for structural design ratings, Table 3 for pilot ratings and Table 7 for maximum pressure ratings.

2. The white and yellow springs are only recommended for inlet pressures under 100 psig / 6.9 bar.

3. The red, black, purple, red stripe and black with white stripe springs are only recommended for applications where the maximum inlet pressure can exceed 500 psig / 35 bar.

2.0

2.5

2.8

2.1

2.8

1.1

1.5

2.6

1.7

2.3

1.6

1.6

1.9

1.7

2.1

1.8

2.2

3.7

3.7

68

40

68

68

102

20

37

28

43

- - - -

4.7

2.8

4.7

4.7

7.0

1.4

2.6

1.9

3.03

29

36

41

30

40

16

21

50

25

34

29

25

33

2.0

2.5

2.8

2.1

2.8

1.1

1.5

3.4

1.7

2.3

2.0

1.7

2.3

7

Bulletin 71.2:EZR

161AY SERIES PILOT

TYPE 112 RESTRICTOR

161EB SERIES PILOT

TYPE 252 PILOT

SUPPLY FILTER

FLOW DIRECTION

B2625_2

MAIN SPRING

DIAPHRAGM AND

PLUG ASSEMBLY

3A—TYPE EZR WITH TYPES 161EB PILOT, 112 RESTRICTOR AND 252 FILTER

W7438

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

LOADING PRESSURE

Figure 3. Type EZR Operational Schematic

8

TYPE 252 PILOT

SUPPLY FILTER

Bulletin 71.2:EZR

PRX SERIES PILOT

RESTRICTOR

S

B

L

A

MAIN SPRING

DIAPHRAGM AND

PLUG ASSEMBLY

DAMPER

FLOW DIRECTION

E0790

S - SUPPLY PORT

B - BLEED PORT

L - LOADING PORT

A - SENSING PORT

3B—TYPE EZR WITH PRX SERIES PILOT AND TYPE 252 FILTER SCHEMATIC

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE


Figure 3. Type EZR Operational Schematic (continued)

Principle of Operation

As long as the outlet (control) pressure is above the outlet pressure setting, the pilot valve plug or disk remains closed (Figure 3). Force from the main spring, in addition to inlet pressure bleeding through the restrictor

(integral in the PRX Series pilots), provide downward loading pressure to keep the main valve diaphragm and plug assembly tightly shutoff.

When the outlet pressure decreases below the pilot outlet pressure setting, the pilot plug or disk assembly opens. Loading pressure bleeds downstream through the pilot faster than it can be replaced through the supply line. This reduces loading pressure on top of the main valve diaphragm and plug assembly and lets the unbalanced force between inlet and loading pressure overcome the main spring force to open the

Type EZR diaphragm and plug assembly.

As the outlet pressure rises toward the outlet pressure setting, it compresses the pilot diaphragm against the pilot control spring and lets the pilot valve plug or disk close. Loading pressure begins building on the

Type EZR diaphragm and plug assembly. The loading pressure, along with force from the main spring, pushes the diaphragm and plug assembly onto the taperededge seat, producing tight shutoff.

Installation (Figure 8)

The robust design of the Type EZR regulator allows it to be installed indoors or outdoors. When installed outdoors, the Type EZR does not require a protective housing. It is designed to withstand the elements and the powder paint coating protects it against impacts, abrasions and corrosion.

When installed indoors, no remote venting is required except on the pilot spring case. This regulator can also be installed in a pit that is subject to flooding by venting the pilot spring case above the maximum possible flood level so the pilot setting can be referenced at atmospheric pressure.

9

Bulletin 71.2:EZR

ELASTOMER/FABRIC

MATERIAL CODE

THICKNESS

CODE

YEAR OF MANUFACTURE

RADIAL

LOCATION

TO LOCATE

IMPRINT CODE

1

1 11

1

1

Table 5. Diaphragm Imprint Codes

THICKNESS MATERIAL

Imprint Ink Code Imprint Ink Code

2 17E68

2 130

4

5

17E88

17E97

DIAPHRAGM MATERIAL

17E68 - Nitrile (NBR)

(low temperature)

17E88 - Fluorocarbon (FKM)

(high aromatic hydrocarbon content resistance)

17E97 - Nitrile (NBR)

(high-pressure and/or erosion resistance)

LOCATE INK CODE

BETWEEN RADII

MATERIAL

INK CODE

DOME IDENTIFICATION

THICKNESS INK CODE

(USE ONE LOCATION ONLY)

MANUFACTURER

CODE

Figure 4. Diaphragm Markings

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, which has been sensing the downstream and control pressure, goes into operation to maintain the downstream pressure at a slightly higher than normal pressure. During an overpressure situation, monitoring keeps the customer on line. Also, testing is relatively easy and safe. To perform a periodic test on a monitoring regulator, increase the outlet set pressure of the working regulator and watch the outlet pressure to determine if the monitoring regulator takes over at the appropriate outlet pressure.

Wide-Open Monitoring Systems (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. 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.

In a wide-open EZR monitoring system, system lockup will equal the lockup of the worker regulator on both an upstream monitor when the upstream pilot exhaust is piped to the intermediate pressure and a downstream monitor with upstream pilot exhaust piped to either intermediate pressure or outlet pressure. With these configurations, the diaphragm of the monitor regulator will change position with every load change. On an upstream monitor with the upstream pilot exhaust piped to downstream, lockup will occur at the monitor’s setpoint and the diaphragm of the monitor regulator will be fully open.

Working Monitoring Regulators (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. In a working monitor system, system lockup will equal the lockup of the downstream regulator.

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.

10

RESTRICTOR

TYPE 252 PILOT

SUPPLY FILTER

Bulletin 71.2:EZR

161 SERIES PILOT

TYPE 252 PILOT

SUPPLY FILTER

RESTRICTOR

161 SERIES PILOT

E0757

TYPE EZR-161 WIDE-OPEN MONITOR

2

R

UN

IN OUT

SENSE

2

R

UN

M1128

TYPE EZR-161 WIDE-OPEN MONITOR WITH PILOT EXHAUST TO INTERMEDIATE PRESSURE

INLET PRESSURE

OUTLET PRESSURE

ATMOSHERIC PRESSURE


INTERMEDIATE PRESSURE

Figure 5. Type EZR Wide-Open Monitor Schematic

11

Bulletin 71.2:EZR

TYPE PRX/120

PILOT

S

L

A

B

FILTER

FILTER

TYPE PRX/120

PILOT

S

L

A

B

M1252

INLET INTERMEDIATE

TYPE EZR-PRX WIDE-OPEN MONITOR

S - SUPPLY PORT

B - BLEED PORT



FILTER

TYPE PRX 120 PILOT

S

L

A

B

FILTER

OUTLET

TYPE PRX 120 PILOT

INLET INTERMEDIATE OUTLET

M1000

TYPE EZR-PRX WIDE-OPEN MONITOR WITH PILOT EXHAUST TO INTERMEDIATE PRESSURE

WITH PILOT EXHAUST TO INTERMEDIATE PRESSURE

S - SUPPLY PORT

B - BLEED PORT



INLET PRESSURE

OUTLET PRESSURE




Figure 5. Type EZR Wide-Open Monitor Schematic `(continued)

12

FILTER

TYPE PRX/120

WORKING PILOT

S

L

A

B S

L

(PLUGGED)

A

TYPE PRX/125

MONITOR PILOT

(NO RESTRICTOR SCREW)

B

FILTER

Bulletin 71.2:EZR

S

L

A

TYPE PRX/120 PILOT

B

INLET

OUTLET

INTERMEDIATE

M1001

INLET PRESSURE

OUTLET PRESSURE




S - SUPPLY PORT

B - BLEED PORT



Figure 6. Type EZR-PRX-PRX Working Monitor Schematic

For PRX Series pilots (Figure 6), the working pilot is

Type PRX-120 or PRX-120AP; the monitor pilot is

Type PRX-125 or PRX-125AP.

Note

The downstream 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.

Working monitor installations require a Type EZR main valve with a 161AY Series, 161EB Series, Type PRX/120 or PRX/120-AP working pilot and a Type 161AYM,

161EBM, PRX/125 or PRX/125-AP monitoring pilot for the upstream regulator and a Type EZR with the appropriate

161AY Series, 161EB Series, Type PRX/120 or

PRX/120-AP pilot for the downstream regulator.

Overpressure Protection

Overpressuring any portion of a regulator or associated equipment may cause personal injury, leakage or property damage due to bursting of pressure-containing parts or explosion of accumulated gas. Provide appropriate pressure relieving or pressure limiting devices to ensure that the limits in the Specifications section are not exceeded. Regulator operation within ratings does not prevent the possibility of damage from external sources or from debris in the pipeline. Common methods of external overpressure protection include relief valves, monitoring regulators and shutoff devices.

Type EZROSX regulator relies on the integrated slamshut device for overpressure (OPSO) or overpressure and underpressure (OPSO/UPSO) protection. In the event that outlet pressure rises above or falls below the pressure setting, slam shut will completely shutoff the flow of gas to the downstream system.

13

Bulletin 71.2:EZR

Table 6. Diaphragm Temperature Capabilities, Erosion Resistance and Chemical Compatibility

Gas Temperature (for lower temperatures contact your local Sales Office)

General Applications

Heavy Particle Erosion

Natural Gas With:

Up to 3% aromatic hydrocarbon content (3)

3 to 15% aromatic hydrocarbon content (3)

15 to 50% aromatic hydrocarbon content (3)

Up to 3% H

2

S (hydrogen sulfide or sour gas)

Up to 3% ketone

Up to 10% alcohol

17E68 NITRILE (NBR)

-20 to 150°F / -29 to 66°C

Best for cold temperatures.

Fair

Good

Poor

Not recommended

Good

Fair

Good

17E97 (1) NITRILE (NBR)

0 to 150°F / -18 to 66°C

Best for high pressure conditions, i.e. transmission service or high pressure industrial service. It is also the best for abrasive or erosive service applications.

Excellent

17E88 FLUOROCARBON (FKM)

0 to 260°F / -18 to 127°C (2)

Best for natural gas having aromatic hydrocarbons. It is also the best for high temperature applications.

Good

Excellent

Good

Poor

Good

Fair

Good

Excellent

Excellent

Excellent

Good

Fair

Fair

Up to 3% synthetic lube Fair

1. The NPS 6 / DN 150, 17E97 diaphragm will perform in gas temperatures as low as -20°F / -29°C.

2. For differential pressures above 400 psig / 28 bar diaphragm temperature is limited to 150°F / 66°C.

3. The aromatic hydrocarbon content is based on percent volume.

Capacity Information

Note

Flow capacities are laboratory verified; therefore, regulators may be sized for

100% flow published capacities. It is not necessary to reduce published capacities.

Tables 13,14 and 15 show the natural gas regulating capacities of the EZR Series regulator at selected inlet pressures and outlet pressure settings. Flows are in thousands of SCFH at 60°F and 14.7 psia (and in thousands of Nm³/h at 0°C and 1.01325 bar) of

0.6 specific gravity natural gas.

To determine equivalent capacities for air, propane, butane or nitrogen, multiply the capacity by the following appropriate conversion factor: 0.775 for air, 0.628 for propane, 0.548 for butane or 0.789 for nitrogen. For gases of other specific gravities, multiply the given capacity by 0.775 and divide by the square root of the appropriate specific gravity.

To find approximate regulating capacities at pressure settings not given in Tables 13, 14 and 15 or to find wide-open flow capacities for relief sizing at any inlet pressure, perform one of the following procedures. Then, if necessary, convert using the factors provided above.

Fair Good

For critical pressure drops (absolute outlet pressure equal to or less than one-half of absolute inlet pressure), use the following formula:

Q = (P

1

)(C g

)(1.29)

For pressure drops lower than critical (absolute outlet pressure greater than one-half of absolute inlet pressure).

Q =

520

GT

C g

P

1

SIN

3417

C

1

P

P

1

DEG where,

Q = gas flow rate, SCFH

P

1

C g

= absolute inlet pressure, psia (P from Table 9 or 10

G = gas specific gravity of the gas

1

gauge + 14.7)

= regulating or wide-open gas sizing coefficient

T = absolute temperature of gas at inlet, °Rankine

C

1

= flow coefficient

P = pressure drop across the regulator, psi

Then, if capacity is desired in normal cubic meters per hour at 0°C and 1.01325 bar, multiply SCFH by 0.0268.

14

2

RUN

4

Bulletin 71.2:EZR

EQUALIZER

BYPASS

MECHANISM

BOX

VALVE

PLUG

VALVE

PLUG DISK

MANOMETRIC

DEVICE

MANOMETRIC

DEVICE STEM

B2692

INLET PRESSURE

OUTLET PRESSURE


Figure 7. Type EZROSX with Slam-shut Device Operational Schematic

Slam-Shut Device Principle of Operation

The Type EZROSX with slam-shut device can provide either overpressure (OPSO) or overpressure and underpressure (OPSO/UPSO) protection by completely shutting off the flow of gas to the downstream system. The slam shut has a mechanism box and a manometric device. The manometric device is a spring and diaphragm actuator. Its movement activates the detection stage of the mechanism box.

The shutoff is a two stage process, the detection stage and the power stage. This separation between detection stage and power stage provides maximum precision, alleviating many false trips caused by environmental vibrations. The slam-shut device includes a bypass valve that will allow pressure to be equalized when resetting the device. Once the slamshut device has been tripped, it must be manually reset. For more information about the Type EZROSX, contact your local Sales Office.

15

Bulletin 71.2:EZR

Table 7. Main Valve Maximum Pressure Ratings, Diaphragm Selection Information and Main Spring Selection

(1)

NPS

1 and 1-1/4 x 1

BODY SIZES

DN

25 and 32 x 25

DIAPHRAGM

MATERIAL

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR) Highpressure and/or erosion resistance

17E88 Fluorocarbon (FKM)

High aromatic hydrocarbon content resistance

17E68 Nitrile (NBR)

Low temperature

MAXIMUM

OPERATING

PRESSURE psig

100

460

500

1050

100

500

750

100

360

INLET

(4) bar

6.9

32

34

72

6.9

34

52

6.9

25

MAXIMUM

OPERATING

DIFFERENTIAL

PRESSURE psid

100

400

500

800

100

500

500

(3)

(3)

100

300

(4) bar d

6.9

28

34

55

6.9

34

34

(3)

(3)

6.9

21

MAXIMUM

EMERGENCY

INLET AND

DIFFERENTIAL

PRESSURE psid

100

460

1050

1050

100

750

750

100

360

bar d

6.9

32

72

72

6.9

52

52

6.9

25

MAIN SPRING

COLOR

Light Blue

Black

Black

Black with White

Stripe (2)

Light Blue

Black

Black with White

Stripe (2)

Light Blue

Black with White

Stripe

Black with White

Stripe

Red Stripe (2)

DIAPHRAGM

DESIGNATION

2 x 1 50 x 25



High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

500

1050

100

750

100

460

500

34

72

6.9

52

6.9

32

34

500

800

100

500

100

400

500

34

55

6.9

34 (3)

6.9

28

34

500

1050

100

750

100

460

1050

34

72

6.9

52

6.9

32

72

Light Blue

Black with White

Stripe

Yellow

Green

Green

2 50


1050 72 800 55 1050 72 Red or Purple (2)



17E68 Nitrile (NBR)

Low temperature

100

500

750

100

360

6.9

34

52

6.9

25

100

500 (3)

500 (3)

100

300

6.9

34 (3)

34 (3)

6.9

21

100

750

750

100

500

6.9

52

52

6.9

34

Yellow

Green

Red or Purple (2)

Yellow

Light Blue

130

3 80

17E97 Nitrile (NBR)

High-pressure and/or erosion resistance

500

1050

34

72

500

800

34

55

1050

1050

72

72

Light Blue

Black (2)

4, 6 x 4 and

8 x 4

100, 150 x 100 and 200 x 100


High aromatic hydrocarbon

content resistance

17E68 Nitrile (NBR)

Low temperature

17E97 Nitrile (NBR)




100

500

750

100

360

500

1050

100

500

750

6.9

34

52

6.9

25

34

72

6.9

34

52

100

500 (3)

500 (3)

100

300

500

800

100

500

500

(3)

(3)

6.9

34

34

6.9

21

34

55

6.9

34

34

(3)

(3)

(3)

(3)

100

750

750

100

500

1050

1050

100

750

750

6.9

52

52

6.9

34

72

72

6.9

52

52

Yellow

Light Blue

Black

Red

(2)

Yellow

Green

Green

(2)

Yellow

Green

Red (2)

6, 8 x 6 and 12 x 6

8

150, 200 x 150 and 300 x 150

200

17E97 Nitrile (NBR)




17E97 Nitrile (NBR)


100

500

1050

100

500

750

100

500

6.9

34

72

6.9

34

52

6.9

34

100

500

800

100

500

500

(3)

(3)

100

500

6.9

34

55

6.9

34

34

(3)

(3)

6.9

34

100

1050

1050

100

750

750

100

1050

6.9

72

72

6.9

52

52

6.9

72

Yellow

Green

Red (2)

Yellow

Green

Red (2)

Yellow

Green

1050 72 800 55 1050 72 Red (2)

1. See Table 1 for main valve structural design ratings and Table 3 for pilot ratings.

2. The red, black, purple, red stripe and black with white stripe springs are only recommended for applications where the maximum inlet pressure can exceed 500 psig / 34.5 bar.

3. For differential pressures above 400 psid / 27.6 bar d diaphragm temperatures are limited to 150°F / 66°C.

4. These are recommendations that provide the best regulator performance for a typical application. Please contact your local Sales Office for further information if a deviation from the standard recommendations are required.

16

Bulletin 71.2:EZR

Table 8. IEC Sizing Coefficients

(1)

MAIN VALVE BODY SIZE, NPS / DN

1 / 25

2 / 50

3 / 80

4 / 100

6 / 150

8 / 200

1. At 100% capacity.

X

T

0.71

0.88

0.95

0.95

0.81

0.96

F

D

0.06

0.09

0.09

0.09

0.13

0.10

F

L

0.94

0.96

0.97

0.92

0.91

0.89

Table 9. Main Valve Regulating Flow Coefficients (1) for EZR Series, With or Without Slam-Shut Device

MAIN

VALVE

BODY SIZE,

NPS / DN

1 / 25

1-1/4 x 1 /

32 x 25

2 x 1 /

50 x 25

2 / 50

3 / 80

4 / 100

CAGE

STYLE,

PERCENT OF

CAPACITY

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

3550

2000

980

5690

3360

1710

572

283

145

650

294

145

1890

1040

570

C g

494

290

145

LINE SIZE EQUALS BODY SIZE PIPING

With Inlet Strainer Without Inlet Strainer

C v

14.8

10.1

5.0

C

1

33.4

28.7

28.8

C g

494

282

141

C v

15.3

9.8

4.9

C

1

32.4

28.9

28.7

17.0

10.5

5.5

18.4

10.9

5.1

50.8

35.6

21.4

33.7

26.9

26.3

35.3

27.0

28.3

37.2

29.2

26.6

573

291

149

650

294

145

1970

1050

570

16.5

10.8

5.6

18.4

10.9

5.1

54.6

36.3

21.4

34.6

26.9

26.4

35.3

27.0

28.2

36.1

28.9

26.6

91.4

70.3

38.0

147

124

66.5

38.8

28.5

25.8

38.7

27.1

25.7

3720

2000

980

5830

3360

1710

99.9

70.3

38.0

154

124

66.5

37.2

28.5

25.8

37.9

27.1

25.7

3390

1970

970

5540

3300

1690

547

293

142

648

294

145

1800

1020

560

C g

481

286

144

2:1 LINE SIZE TO BODY SIZE PIPING


C v

14.4

9.9

5.0

C

1

33.4

29.0

28.6

C g

478

275

139

C v

14.6

9.5

4.9

C

1

32.7

28.9

28.5

16.1

10.9

5.4

18.2

10.9

5.1

50.4

35.9

21.5

34.1

26.7

26.1

35.6

27.0

28.3

35.7

28.4

26.0

550

303

147

645

294

145

1840

1020

560

15.9

11.3

5.6

18.2

10.9

5.1

53.0

35.9

21.5

34.7

26.9

26.3

35.4

27.0

28.4

34.7

28.4

26.0

90.6

67.5

36.9

145

122

66.3

37.4

29.2

26.3

38.2

27.0

25.5

3510

1970

970

5640

3300

1690

97.1

68.3

36.9

151

121

66.8

36.1

28.8

26.3

37.4

27.3

25.3

6 x 4 /

150 x 100

8 x 4 /

200 x 100

6 / 150

8 x 6 /

200 x 150

12 x 6 /

300 x 150

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

6150

3790

1900

6030

3640

1830

11,600

7120

3560

13,400

8250

4150

13,600

8210

4110

159

140

74

156

134

71

325

239

135

376

277

157

381

276

155

38.7

27.1

25.7

38.7

27.1

25.8

35.7

29.8

26.4

35.7

29.8

26.4

35.7

29.8

26.4

6290

3810

1910

6170

3700

1860

12,000

7200

3560

13,700

8290

4150

13,700

8220

4110

166

141

74

163

137

72

337

241

134

385

277

156

385

275

155

37.9

27.1

25.7

37.9

27.1

25.8

35.6

29.9

26.6

35.6

29.9

26.6

35.6

29.9

26.6

6142

3930

1970

5934

3720

1870

11,200

7150

3570

12,940

8280

4160

13,130

8240

4120

161

146

77

155

138

73

314

240

135

363

278

157

368

277

156

38.2

27.0

25.5

38.2

27.0

25.6

35.7

29.8

26.4

35.7

29.8

26.4

35.7

29.8

26.4

6242

3890

1950

6034

3730

1880

11,700

7230

3590

13,360

8320

4180

13,360

8250

4140

167

143

77

161

137

74

329

242

135

376

279

157

376

276

156

8 / 200 100% 19,700 505 39 20,100 517 38.9

19,500 503 38.8

19,700 509

1. K m

for the NPS 1 / DN 25 body size at 100% capacity is 0.88, the NPS 2 / DN 50 is 0.92, the NPS 3 / DN 80 is 0.94, the NPS 4 / DN 100 is 0.84 and the NPS 6 / DN 150 is 0.82.

38.7

37.4

27.3

25.3

37.4

27.3

25.3

35.6

29.9

26.6

35.6

29.9

26.6

35.6

29.9

26.6

17

Bulletin 71.2:EZR

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

CAGE

STYLE,

PERCENT OF

CAPACITY

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

60%

30%

100%

Table 10. Main Valve Wide-Open Flow Coefficients for EZR Series, With or Without Slam-Shut Device

MAIN

VALVE

BODY SIZE,

NPS / DN

1 / 25

1-1/4 x 1 /

32 x 25

2 x 1 /

50 x 25

2 / 50

3 / 80

4 / 100

6 x 4 /

150 x 100

8 x 4 /

200 x 100

6 / 150

8 x 6 /

200 x 150

12 x 6 /

300 x 150

8 / 200

3660

2060

1010

5860

3460

1760

6250

3850

1940

6100

3680

1850

11,950

7330

3670

13,800

8490

4280

14,010

8450

4240

20,300

670

303

149

1950

1070

590

C g

509

299

149

590

291

149

LINE SIZE EQUALS BODY SIZE PIPING


C v

15.2

10.4

5.2

17.5

10.8

5.7

C

1

33.5

28.7

28.8

33.7

26.9

26.3

C g

509

291

145

590

299

154

C v

15.7

10.1

5.1

17.0

11.2

5.8

C

1

32.5

28.8

28.7

34.6

26.9

26.4

19.0

11.2

5.3

52.4

36.6

22.2

35.3

27.0

28.3

37.2

29.2

26.6

670

303

149

2030

1080

590

19.0

11.2

5.3

56.2

37.4

22.2

35.3

27.0

28.2

36.1

28.9

26.6

94.1

72.4

39.1

151

128

68.5

162

142

75

158

136

72

335

246

139

386

285

162

392

284

160

520

38.8

28.5

25.8

38.7

27.1

25.7

38.7

27.1

25.7

38.7

27.1

25.8

35.7

29.8

26.5

35.7

29.8

26.5

35.7

29.8

26.5

39.0

3830

2060

1010

6000

3460

1770

6390

3870

1940

6240

3750

1880

12,360

7420

3670

14,110

8540

4280

14,110

8470

4240

20,700

102.9

72.4

39.1

158

128

68.2

169

143

75

165

138

72

348

248

138

397

286

161

397

283

159

533

35.5

29.9

26.6

35.5

29.9

26.6

38.8

37.2

28.5

25.8

37.9

27.1

26.0

37.9

27.1

26.0

37.9

27.1

26.1

35.5

29.9

26.6

3490

2030

1000

5710

3400

1740

6131

3920

1970

5930

3720

1870

11,540

7360

3680

13,330

8520

4290

13,530

8480

4250

20,100

667

303

149

1850

1050

580

C g

495

295

148

564

301

146

2:1 LINE SIZE TO BODY SIZE PIPING


C v

14.8

10.1

5.2

16.5

11.3

5.6

C

1

33.5

29.0

28.6

34.1

26.7

26.1

C g

493

284

143

566

312

151

C v

15.0

9.8

5.0

16.3

11.6

5.8

C

1

32.9

28.9

28.5

34.7

26.9

26.3

18.7

11.2

5.3

51.8

37.0

22.3

35.6

27.0

28.3

35.7

28.4

26.0

664

303

149

1900

1050

580

18.7

11.2

5.3

54.6

37.0

22.3

35.4

27.0

28.4

34.7

28.4

26.0

93.3

69.5

38.0

149

125

68.2

161

144

77

155

136

73

323

247

139

373

286

162

379

285

160

518

37.4

29.2

26.3

38.2

27.3

25.5

38.2

27.3

25.5

38.2

27.3

25.6

35.7

29.8

26.5

35.7

29.8

26.5

35.7

29.8

26.5

38.8

3620

2030

1000

5810

3400

1740

6231

3880

1950

6030

3720

1880

12,050

7450

3700

13,760

8570

4310

13,760

8,500

4,270

20,300

100.2

70.0

38.0

155

125

68.8

167

142

77

161

136

74

339

249

139

387

287

162

387

284

160

524

35.6

29.9

26.6

35.6

29.9

26.6

38.7

36.1

28.8

26.3

37.4

27.3

25.3

37.4

27.3

25.3

37.4

27.3

25.3

35.5

29.9

26.6

Table 11. Pilot Flow Coefficients

Orifice Size

3/32 in. / 2.4 mm

1/8 in. / 3.2 mm

1/4 in. / 6.4 mm

161AY SERIES

C g

6.9

12.3

50

C v

0.20

0.35

1.43

C

1

35

35

35

Orifice Size

1/8 in. /

3.18 mm

161EB SERIES

C g

C v

8.5

0.28

C

1

30.4

C g

10.5

TYPE PRX

C v

0.36

C

1

29

Table 12. Restrictor Flow Coefficients

SET ON START

C g

6

C v

0.17

C g

1

SET ON RUN

C v

0.03

C

1

35

18

Bulletin 71.2:EZR

Table 13. Capacities for EZR Series with Type 161AY or 161AYM Pilot

PRESSURE psig

25

30

35

INLET

80

90

100

125

150

60

65

70

75

40

45

50

55

bar

1.7

2.1

2.4

2.8

3.1

3.4

3.8

4.1

4.5

4.8

5.2

5.5

6.2

6.9

8.6

10.3

OUTLET PRESSURE psig

up to 2.5

3

5

7 up to 4.5

7 up to 6

7 up to 7 up to 7 up to 7

bar

up to 0.17

0.21

0.35

0.48

up to 0.31

0.48

up to 0.41

0.48

up to 0.48

up to 0.48

up to 0.48

34.5

37.9

41.2

44.4

47.6

50.8

54.0

57.2

NPS 1 / DN 25 NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / DN 100 NPS 6 / DN 150 NPS 8 / DN 200

SCFH Nm³/h SCFH Nm³/h SCFH Nm³/h SCFH Nm³/h SCFH Nm³/h SCFH Nm³/h

- - - -

CAPACITIES IN THOUSANDS OF SCFH / Nm³/h OF 0.6 SPECIFIC GRAVITY NATURAL GAS

USING 1:1 LINE SIZE TO BODY SIZE PIPING WITHOUT INLET STRAINER

- - - -

101

95

93

- - - -

2.7

2.5

2.5

- - - -

191

177

173

- - - -

5.1

4.7

4.6

- - - -

299

275

268

260

8.0

7.4

7.2

7.0

586

583

571

556

15.7

15.6

15.3

14.9

941

936

912

884

25.2

25.1

24.4

23.7

28.0

- - - -

31.3

31.1

0.7

- - - -

0.8

0.8

114

105

126

119

3.1

2.8

3.4

3.2

215

196

239

223

5.8

5.2

6.4

6.0

336

304

374

346

9.0

8.1

10.0

9.3

660

646

738

732

17.7

17.3

19.7

19.6

1062

1033

1187

1177

28.5

27.7

31.8

31.5

60.3

66.6

72.9

88.4

104

0.9

1.0

1.1

1.2

1.3

1.4

1.4

1.5

1.6

1.8

1.9

2.4

2.8

139

152

164

177

190

203

215

228

241

253

266

355

419

Note: Blank areas indicate where minimum main valve differential pressure is not met.

3.7

4.1

4.4

4.7

5.1

5.4

5.8

6.1

6.5

6.8

7.1

9.5

11.2

262

286

310

334

358

382

406

430

454

478

502

670

790

7.0

7.7

8.3

8.9

9.6

10.2

10.9

11.5

12.2

12.8

13.5

18.0

21.2

411

449

487

524

562

599

637

675

712

750

787

1051

1239

11.0

12.0

13.1

14.0

15.1

16.1

17.1

18.1

19.1

20.1

21.1

28.2

33.2

817

900

981

1062

1143

1223

1302

1381

1460

1617

1773

2163

2551

21.9

24.1

26.3

28.5

30.6

32.8

34.9

37.0

39.1

43.3

47.5

58.0

68.4

1317

1455

1592

1727

1862

1996

2129

2261

2394

2658

2920

3575

4227

35.3

39.0

42.7

46.3

49.9

53.5

57.1

60.6

64.2

71.2

78.3

95.8

113

- continued -

Table 13. Capacities for EZR Series with Type 161AY or 161AYM Pilot (continued)

PRESSURE psig

25

30

35

INLET

80

90

100

125

150

60

65

70

75

40

45

50

55

bar

1.7

2.1

2.4

4.1

4.5

4.8

5.2

2.8

3.1

3.4

3.8

5.5

6.2

6.9

8.6

10.3


up to 2.5

3

5

7 up to 4.5

7 up to 6

7 up to 7 up to 7 up to 7

bar

up to 0.17

0.21

0.35

0.48

up to 0.31

0.48

up to 0.41

0.48

up to 0.48

up to 0.48

up to 0.48

44.4

48.9

53.3

57.7

62.0

66.3

70.6

74.9



NPS 1-1/4 x 1 /

DN 32 x 25

NPS 2 x 1 /

DN 50 x 25

NPS 6 x 4 /

DN 150 x 100

NPS 8 x 4 /

DN 200 x 100

SCFH Nm³/h SCFH Nm³/h SCFH Nm³/h SCFH Nm³/h

NPS 8 x 6 /

DN 200 x 150

SCFH Nm³/h

NPS 12 x 6 /

DN 300 x 150

SCFH Nm³/h

- - - - - - - - - -

299

297

290

281

8.0

8.0

7.8

7.5

294

292

285

277

7.9

7.8

7.6

7.4

669

666

652

634

17.9

17.8

17.5

17.0

669

666

652

634

17.9

17.8

17.5

17.0

35.9

35.1

40.1

39.8

1.0

0.9

1.1

1.1

35.9

- - - -

40.1

39.8

1.0

- - - -

1.1

1.1

337

328

376

374

9.0

8.8

10.1

10.0

331

323

370

367

8.9

8.7

9.9

9.8

754

737

842

836

20.2

19.8

22.6

22.4

754

737

842

836

20.2

19.8

22.6

22.4

79.2

87.7

96.1

117

138

1.2

1.3

1.4

1.5

1.7

1.8

1.9

2.0

2.1

2.3

2.6

3.1

3.7

44.4

48.9

53.3

57.7

62.0

66.3

70.6

74.9

79.2

87.7

96.1

117

138

1.2

1.3

1.4

1.5

1.7

1.8

1.9

2.0

2.1

2.3

2.6

3.1

3.7


417

461

504

546

588

630

672

714

755

838

920

1126

1330

11.2

12.4

13.5

14.6

15.8

16.9

18.0

19.1

20.2

22.5

24.7

30.2

35.7

411

454

496

537

579

620

661

702

743

825

906

1108

1309

11.0

12.2

13.3

14.4

15.5

16.6

17.7

18.8

19.9

22.1

24.3

29.7

35.1

933

1027

1120

1213

1304

1396

1486

1577

1667

1846

2025

2470

2913

25.0

27.5

30.0

32.5

34.9

37.4

39.8

42.3

44.7

49.5

54.3

66.2

78.1

933

1027

1120

1213

1304

1396

1486

1577

1667

1846

2025

2470

2913

25.0

27.5

30.0

32.5

34.9

37.4

39.8

42.3

44.7

49.5

54.3

66.2

78.1

19

Bulletin 71.2:EZR

Table 14. Capacities for EZR Series with Type 161EB, 161EBM or PRX Pilot

psig

30

40

50

60

75

100

125

150

200

300

400

500

600

700

800

900

INLET

PRESSURE bar

2.1

2.8

3.5

4.1

5.2

6.9

8.6

10.3

13.8

20.7

27.6

34.5

41.4

48.3

55.2

62.1

OUTLET PRESSURE

up to 16

25

35

40 up to 22

35

50

55 up to 32

60

75

80 up to 43

60

90

105 up to 52

60

95

130

psig

5

10 up to 8

15

20 up to 12

15

25

30 up to 73

110

150

180 up to 115

170

225

280 up to 155

200

250

300

350 up to 196

250

300

350 up to 237

250

300

350 up to 278

300

350 up to 350 up to 350

bar

0.35

0.69

up to 0.55

1.0

1.38

up to 0.83

1.0

1.7

2.1

up to 1.1

1.7

2.4

2.8

up to 1.5

2.4

3.5

3.8

up to 2.2

4.1

5.2

5.5

up to 3.0

4.1

6.2

7.2

up to 3.6

4.1

6.5

9.0

up to 5.0

7.6

10.3

12.4

up to 7.9

11.7

15.5

19.3

up to 10.7

13.8

17.2

20.9

24.1

up to 13.5

17.2

20.7

24.1

up to 16.3

17.2

20.7

24.1

up to 19.2

20.7

24.1

up to 24.1

up to 24.1

261

253

237

208

158

324

315

299

275

135

127

106

- - - -

198

186

157

- - - -

88

85

71

- - - -

104

103

92

- - - -

57

54

47

- - - -

72

65

55

- - - -

NPS 1 / DN 25

SCFH Nm³/h



NPS 2 / DN 50

SCFH Nm³/h

NPS 3 / DN 80

SCFH Nm³/h

NPS 4 / DN 100

SCFH Nm³/h

NPS 6 / DN 150

SCFH Nm³/h

NPS 8 / DN 200

SCFH Nm³/h

28

- - - -

34

33

- - - -

41

40

38

- - - -

47

45

42

- - - -

0.7

- - - -

0.9

0.9

- - - -

1.1

1.1

1.0

- - - -

1.3

1.2

1.1

- - - -

107

101

139

125

117

164

154

141

131

190

172

155

143

2.8

2.7

3.7

3.3

3.1

4.4

4.1

3.8

3.5

5.1

4.6

4.1

3.8

200

188

262

232

216

310

287

261

242

358

319

287

264

5.4

5.0

7.0

6.2

5.8

8.3

7.7

7.0

6.5

9.6

8.5

7.7

7.1

310

292

411

360

335

487

446

404

373

562

495

444

409

8.3

7.8

11.0

9.6

9.0

13.1

12.0

10.8

10.0

15.1

13.3

11.9

11.0

658

623

812

767

719

961

945

865

804

1111

1055

954

882

17.6

16.7

21.8

20.6

19.3

25.8

25.3

23.2

21.5

29.8

28.3

25.6

23.6

1056

991

1307

1221

1134

1548

1516

1368

1263

1788

1680

1501

1380

41.5

40.6

36.7

33.8

47.9

45.0

40.2

37.0

28.3

26.6

35.0

32.7

30.4

2.4

2.3

1.9

- - - -

2.8

2.8

2.5

- - - -

1.5

1.4

1.3

- - - -

1.9

1.7

1.5

- - - -

355

321

261

208

419

393

342

228

228

203

175

160

291

241

203

186

9.5

8.6

7.0

5.6

11.2

10.5

9.2

6.1

7.8

6.5

5.4

5.0

6.1

5.4

4.7

4.3

670

595

482

382

790

732

632

419

430

378

322

296

550

447

375

342

18.0

15.9

12.9

10.2

21.2

19.6

16.9

11.2

11.5

10.1

8.6

7.9

14.7

12.0

10.1

9.2

1051

923

745

589

1239

1137

977

646

675

585

498

456

863

691

578

527

28.2

24.7

20.0

15.8

33.2

30.5

26.2

17.3

18.1

15.7

13.3

12.2

23.1

18.5

15.5

14.1

2076

1969

1609

1282

2453

2412

2102

1406

1334

1250

1075

988

1707

1485

1252

1144

55.6

52.8

43.1

34.4

65.7

64.6

56.3

37.7

35.8

33.5

28.8

26.5

45.7

39.8

33.6

30.7

3342

3134

2515

1985

3953

3868

3308

2175

2149

1986

1684

1541

2750

2340

1952

1777

89.6

84.0

67.4

53.2

106

104

88.7

58.3

57.6

53.2

45.1

41.3

73.7

62.7

52.3

47.6

3.6

3.4

2.8

- - - -

5.3

5.0

4.2

- - - -

546

479

390

264

800

698

577

324

14.6

12.8

10.5

7.1

21.4

18.7

15.5

8.7

1030

887

720

484

1510

1295

1065

594

27.6

23.8

19.3

13.0

40.5

34.7

28.5

15.9

1615

1375

1112

746

2367

2006

1645

914

43.3

36.9

29.8

20.0

63.4

53.8

44.1

24.5

3194

2941

2406

1628

4677

4292

3557

1998

85.6

78.8

64.5

43.6

125

115

95.3

53.5

5145

4662

3753

2511

7531

6801

5553

3076

138

125

101

67.3

202

182

149

82.4

387

386

376

362

450

447

438

509

577

7.0

6.8

6.3

5.6

4.2

8.7

8.4

8.0

7.4

10.4

10.3

10.1

9.70

12.1

11.9

11.7

13.6

15.5

1054

961

883

764

572

1308

1195

1121

1018

1562

1481

1428

1358

1816

1715

1662

2070

2325

1000

1050

68.9

72.4

up to 350 up to 350 up to 24.1

up to 24.1

644

677

17.3

18.1

2579

2706


41.9

39.7

38.3

36.4

48.7

46.0

44.5

55.5

62.3

69.1

72.5

28.2

25.8

23.7

20.5

15.3

35.1

32.0

30.0

27.3

1990

1785

1635

1410

1052

2470

2220

2078

1881

2950

2760

2655

2517

3430

3196

3090

3910

4389

4869

5109

53.3

47.8

43.8

37.8

28.2

66.2

59.5

55.7

50.4

79.1

74.0

71.2

67.5

91.9

85.7

82.8

105

118

130

137

3119

2769

2530

2177

1621

3871

3444

3217

2907

4623

4287

4119

3899

5375

4964

4793

6127

6879

7631

8007

83.6

74.2

67.8

58.3

43.4

104

92.3

86.2

77.9

124

115

111

104

144

133

128

164

184

205

215

6169

5899

5432

4709

3530

7656

7334

6894

6268

9143

9079

8770

8346

10,630

10,519

10,205

11,958

13,651

15,306

16,124

165

158

146

126

94.6

205

197

185

168

245

243

235

224

285

282

273

320

366

410

432

9936

9405

8568

7352

5458

12,331

11,697

10,900

9827

14,726

14,593

13,989

13,217

17,121

16,892

16,282

19,189

22,008

24,771

26,138

395

391

375

354

459

453

436

514

590

664

700

266

252

230

197

146

330

313

292

263

- continued -

20

Bulletin 71.2:EZR

Table 14. Capacities for EZR Series with Type 161EB, 161EBM or PRX Pilot (continued)

PRESSURE psig

30

40

50

60

75

INLET bar

2.1

2.8

3.5

4.1

5.2


5

10 up to 8

15

20 up to 12

15

25

30 up to 16

25

35

40 up to 22

35

50

55

bar

0.35

0.69

up to 0.55

1.0

1.4

up to 0.8

1.0

1.7

2.1

up to 1.1

1.7

2.4

2.8

up to 1.5

2.4

3.5

3.8

46

46

42

- - - -

54

51

46

- - - -

NPS 1-1/4 x 1 /

DN 32 x 25



NPS 2 x 1 /

DN 50 x 25

NPS 6 x 4 /

DN 150 x 100

NPS 8 x 4 /

DN 200 x 100

NPS 8 x 6 /

DN 200 x 150

NPS 12 x 6 /

DN 300 x 150


32

- - - -

39

37

- - - -

0.9

- - - -

1.0

1.0

- - - -

36

- - - -

44

42

- - - -

1.0

- - - -

1.2

1.1

- - - -

335

315

415

388

362

8.9

8.4

11.1

10.4

9.7

330

310

408

382

356

8.8

8.3

10.9

10.2

9.5

751

712

927

876

821

20.1

19.1

24.8

23.5

22.0

751

712

927

876

821

20.1

19.1

24.8

23.5

22.0

1.2

1.2

1.1

- - - -

1.4

1.4

1.2

- - - -

52

51

47

- - - -

60

57

52

- - - -

1.4

1.4

1.3

- - - -

1.6

1.5

1.4

- - - -

491

481

436

403

567

534

479

441

13.2

12.9

11.7

10.8

15.2

14.3

12.8

11.8

483

473

429

397

558

526

471

434

12.9

12.7

11.5

10.6

15.0

14.1

12.6

11.6

1098

1079

988

918

1268

1204

1089

1007

29.4

28.9

26.5

24.6

34.0

32.3

29.2

27.0

1098

1079

988

918

1268

1204

1089

1007

29.4

28.9

26.5

24.6

34.0

32.3

29.2

27.0

64

61

52

- - - -

1.7

1.6

1.4

- - - -

73

68

59

- - - -

2.0

1.8

1.6

- - - -

681

632

538

493

18.3

16.9

14.4

13.2

671

622

529

485

18.0

16.7

14.2

13.0

1523

1427

1227

1128

40.8

38.2

32.9

30.2

1523

1427

1227

1128

40.8

38.2

32.9

30.2

100

125

150

200

300

400

500

600

700

800

900

6.9

8.6

10.3

13.8

20.7

27.6

34.5

41.4

48.3

55.2

62.1

up to 32

60

75

80 up to 43

60

90

105 up to 52

60

95

130 up to 73

110

150

180 up to 115

170

225

280 up to 155

200

250

300

350 up to 196

250

300

350 up to 237

250

300

350 up to 278

300

350 up to 350 up to 350 up to 2.2

4.1

5.2

5.5

up to 3.0

4.1

6.2

7.2

up to 3.6

4.1

6.6

9.0

up to 5.0

7.6

10.3

12.4

up to 7.9

11.7

15.5

19.3

up to 10.7

13.8

17.2

20.7

24.1

up to 13.5

17.2

20.9

24.1

up to 16.3

17.2

20.9

24.1

up to 19.2

20.7

24.1

up to 24.1

up to 24.1

1000 68.9

up to 350 up to 24.1

737 19.8

831

1050 72.4

up to 350 up to 24.1

776 20.8

875


22.3

23.5

369

355

335

305

441

438

424

405

118

117

102

- - - -

154

143

117

- - - -

82

72

61

- - - -

100

95

79

- - - -

226

208

174

- - - -

298

286

264

230

173

513

508

494

578

658

9.9

9.5

9.0

8.2

11.8

11.7

11.4

10.9

3.2

3.1

2.7

- - - -

4.1

3.8

3.1

- - - -

2.2

1.9

1.6

- - - -

2.7

2.5

2.1

- - - -

6.1

5.6

4.7

- - - -

8.0

7.7

7.1

6.2

4.6

13.7

13.6

13.2

15.5

17.6

416

399

375

342

497

493

477

454

133

131

114

- - - -

174

160

131

- - - -

93

81

68

- - - -

113

107

88

- - - -

254

234

194

- - - -

335

321

296

257

193

578

572

555

650

742

11.1

10.7

10.1

9.2

13.3

13.2

12.8

12.2

3.6

3.5

3.1

- - - -

4.7

4.3

3.5

- - - -

2.5

2.2

1.8

- - - -

3.0

2.9

2.4

- - - -

6.8

6.3

5.2

- - - -

9.0

8.6

7.9

6.9

5.2

15.5

15.3

14.9

17.4

19.9

1253

1228

1055

697

1631

1485

1200

806

872

746

624

569

1060

997

804

636

2388

2166

1776

987

3150

2990

2732

2351

1750

3910

3719

3473

3139

4669

4629

4447

4210

5428

5360

5175

6090

6976

7844

8273

33.6

32.9

28.3

18.7

43.7

39.8

32.2

21.6

23.4

20.0

16.7

15.2

28.4

26.7

21.5

17.0

64.0

58.0

47.6

26.5

84.4

80.1

73.2

63.0

46.9

105

99.7

93.1

84.1

125

124

119

113

145

144

139

163

187

210

222

1233

1208

1039

686

1605

1461

1181

793

858

734

614

560

1043

981

791

626

2350

2132

1747

972

3100

2943

2689

2313

1722

3847

3659

3418

3089

4595

4556

4376

4143

5342

5275

5093

5993

6865

7719

8141

33.0

32.4

27.8

18.4

43.0

39.2

31.7

21.2

23.0

19.7

16.5

15.0

28.0

26.3

21.2

16.8

63.0

57.1

46.8

26.0

83.1

78.9

72.1

62.0

46.2

103

98.1

91.6

82.8

123

122

117

111

143

141

136

161

184

207

218

2801

2754

2400

1606

3647

3357

2746

1858

1949

1695

1430

1306

2370

2248

1837

1463

5339

4900

4061

2281

7043

6734

6202

5376

4030

8740

8373

7870

7156

10,438

10,365

10,012

9528

12,136

12,009

11,650

13 652

15,584

17,474

18,408

234

224

211

192

280

278

268

255

75.1

73.8

64.3

43.0

97.7

90.0

73.6

49.8

52.2

45.4

38.3

35.0

63.5

60.2

49.2

39.2

143

131

109

61.1

189

180

166

144

108

325

322

312

366

418

468

493

8740

8373

7870

7156

10,438

10,365

10,012

9528

2801

2754

2400

1606

3647

3357

2746

1858

1949

1695

1430

1306

2370

2248

1837

1463

5339

4900

4061

2281

7043

6734

6202

5376

4030

12,136

12,009

11,650

13,652

15,584

17,474

18,408

234

224

211

192

280

278

268

255

75.1

73.8

64.3

43.0

97.7

90.0

73.6

49.8

52.2

45.4

38.3

35.0

63.5

60.2

49.2

39.2

143

131

109

61.1

189

180

166

144

108

325

322

312

366

418

468

493

21

Bulletin 71.2:EZR

Table 15. Capacities for EZR Series with PRX Series

INLET

PRESSURE psig

300

400

500

600

700

800

900

1000

1050

bar

21.0

28.0

34.0

41.0

48.0

55.0

62.0

69.0

72.0


250

280

250

300

350

380

250

300

350

400

450

480

250

300

400

500

550

580

250

300

400

500

600 up to 300

400

500

600

700 up to 350

400

500

600

700 up to 400

500

600

700 up to 400

500

600

700

900

bar

17.0

19.0

17.0

21.0

24.0

26.0

17.0

21.0

24.0

28.0

31.0

33.0

17.0

21.0

28.0

34.0

38.0

40.0

17.0

21.0

28.0

34.0

41.0

up to 21.0

28.0

34.0

41.0

48.0

up to 24.0

28.0

34.0

41.0

48.0

up to 28.0

34.0

41.0

48.0

up to 28.0

34.0

41.0

48.0

62.0

515

499

467

411

312

453

447

424

377

290

386

376

340

265

196

- - - -

577

571

547

507

442

639

622

592

545



NPS 1 / DN 25 NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / DN 100 NPS 6 / DN 150 NPS 8 / DN 200

SCFH

134

- - - -

237

208

158

- - - -

Nm³/h

3.6

- - - -

6.3

5.6

4.2

- - - -

SCFH

489

324

883

764

572

374

Nm³/h

13.1

8.7

23.7

20.5

15.3

10.0

SCFH

901

594

1635

1410

1052

686

Nm³/h

24.1

15.9

43.8

37.8

28.2

18.4

SCFH

1389

914

2530

2177

1621

1056

Nm³/h

37.2

24.5

67.8

58.3

43.4

28.3

SCFH

3019

1998

5432

4709

3530

2311

Nm³/h

80.9

53.5

146

126

94.6

61.9

SCFH

4682

3076

8568

7352

5458

3552

Nm³/h

125

82.4

230

197

146

95.2

315

299

275

238

178

- - - -

8.4

8.0

7.4

6.4

4.8

- - - -

1195

1121

1018

871

644

418

32.0

30.0

27.3

23.3

17.3

11.2

2220

2078

1881

1604

1183

768

59.5

55.7

50.4

43.0

31.7

20.6

3444

3217

2907

2475

1823

1182

92.3

86.2

77.9

66.3

48.9

31.7

7334

6894

6268

5367

3977

2586

197

185

168

144

107

69.3

11,697

10,900

9827

8348

6137

3972

313

292

263

224

164

106

673

658

632

591

432

12.1

11.9

11.4

10.1

7.8

13.8

13.4

12.5

11.0

8.4

10.3

10.1

9.1

7.1

5.2

- - - -

15.5

15.3

14.7

13.6

11.8

17.1

16.7

15.9

14.6

18.0

17.6

16.9

15.8

11.6

1755

1715

1594

1393

1052

2070

1896

1745

1512

1133

1481

1428

1264

966

709

459

2325

2184

2064

1886

1622

2579

2364

2220

2017

2706

2509

2379

2196

1572

47.0

46.0

42.7

37.3

28.2

55.5

50.8

46.8

40.5

30.4

39.7

38.3

33.9

25.9

19.0

12.3

62.3

58.5

55.3

50.5

43.5

69.1

63.4

59.5

54.1

72.5

67.4

63.8

58.9

42.2

1. For outlet pressures above 435 psig / 30 bar, use Type PRX-AP pilot rather than Type PRX.


3278

3196

2956

2572

1936

3910

3525

3231

2789

2082

2760

2655

2337

1777

1302

841

4389

4067

3830

3487

2991

4869

4394

4115

3727

5109

4668

4412

4063

2892

74.0

71.2

62.6

47.6

34.9

22.5

87.9

85.7

79.2

68.9

51.9

105

94.5

86.6

74.7

55.8

118

109

103

93.5

80.2

130

118

110

99.9

137

125

118

109

77.6

4287

4119

3614

2741

2006

1295

5099

4964

4579

3975

2984

6127

5468

5001

4308

3209

6879

6316

5935

5394

4617

7631

6817

6372

5762

8007

7245

6826

6283

4459

115

110

96.9

73.5

53.8

34.7

134

133

123

107

80.0

164

147

134

115

86.0

184

169

159

145

124

205

183

171

154

215

194

183

168

120

9079

8770

7777

5956

4379

2834

10,751

10,519

9793

8577

6493

12,202

11,640

10,732

9314

6990

13,651

13,396

12,679

11,604

10,000

15,096

14,510

13,650

12,420

15,932

15,398

14,618

13,517

9694

327

312

288

250

187

288

282

262

230

174

243

235

208

160

117

76.0

366

359

340

311

268

405

389

366

333

427

413

392

362

260

14,593

13,989

12,229

9240

6749

4352

17,381

16,892

15,526

13,435

10,055

19,697

18,574

16,938

14,547

10,809

22,008

21,486

20,133

18,250

15,584

24,316

23,158

21,592

19,480

25,710

24,627

23,181

21,261

15,024

528

498

454

390

290

466

453

416

360

269

391

375

328

248

181

117

590

576

540

489

418

652

621

579

522

689

660

621

570

403

- continued -

22

Bulletin 71.2:EZR

Table 15. Capacities for EZR Series with PRX Series (continued)

INLET

PRESSURE psig

300

400

500

600

bar

21.0

28.0

34.5

41.4

OUTLET

PRESSURE psig

250

280

250

300

350

380

250

300

350

400

450

480

250

300

400

500

550

580

bar

17.2

19.3

17.2

21.0

24.1

26.2

17.2

21.0

24.1

28.0

31.0

33.1

17.2

21.0

28.0

34.5

38.0

40.0



NPS 1-1/4 x 1 /

DN 32 x 25

NPS 2 x 1 /

DN 50 x 25

NPS 6 x 4 /

DN 150 x 100

NPS 8 x 4 /

DN 200 x 100

NPS 8 x 6 /

DN 200 x 150

NPS 12 x 6 /

DN 300 x 150


148

- - - -

264

230

173

- - - -

355

335

305

262

195

- - - -

438

424

378

291

215

- - - -

4.0

- - - -

7.1

6.2

4.6

- - - -

9.5

9.0

8.2

7.0

5.2

- - - -

11.7

11.4

10.1

7.8

5.8

- - - -

165

- - - -

296

257

193

- - - -

399

375

342

293

217

- - - -

493

477

424

325

239

- - - -

4.4

- - - -

7.9

6.9

5.2

- - - -

10.7

10.1

9.2

7.8

5.8

- - - -

13.2

12.8

11.4

8.7

6.4

- - - -

1500

987

2732

2351

1750

1141

3719

3473

3139

2672

1969

1276

4629

4447

3903

2960

2166

1398

700

800

48.0

55.2

250

300

400

500

600 up to 300

400

500

600

700

17.2

21.0

28.0

34.5

41.4

up to 21.0

28.0

34.5

41.4

48.0

588

563

522

454

342

518

508

475

418

318

13.9

13.6

12.7

11.2

8.5

15.8

15.1

14.0

12.2

9.2

663

633

584

508

381

584

572

533

467

354

15.6

15.3

14.3

12.5

9.5

17.8

17.0

15.7

13.6

10.2

900

1000

1050

62.0

69.0

72.4

up to 350

400

500

600

700 up to 400

500

600

700 up to 400

500

600

700

900 up to 24.1

28.0

34.5

41.4

48.0

up to 28.0

34.5

41.4

48.0

up to 28.0

34.5

41.4

48.0

62.0

658

647

615

565

488

728

702

663

605

768

745

709

658

474

17.6

17.3

16.5

15.1

13.1

19.5

18.8

17.8

16.2

20.6

20.0

19.0

17.6

12.7

742

728

690

632

545

820

789

743

677

866

837

796

736

529

19.9

19.5

18.5

16.9

14.6

22.0

21.1

19.9

18.1

23.2

22.4

21.3

19.7

14.2

6976

6820

6408

5824

4985

1. For outlet pressures above 435 psig / 30 bar, use Type PRX-AP pilot rather than Type PRX.


7709

7361

6880

6221

8147

7823

7381

6784

4811

5505

5360

4944

4292

3222

6241

5904

5400

4651

3465

40.2

26.5

73.2

63.0

46.9

30.6

99.7

93.1

84.1

71.6

52.8

34.2

124

119

105

79.3

58.0

37.5

148

144

132

115

86.4

167

158

145

125

92.9

187

183

172

156

134

207

197

184

167

218

210

198

182

129

1476

972

2689

2313

1722

1123

3659

3418

3089

2630

1937

1256

4556

4376

3841

2913

2131

1376

5418

5275

4865

4224

3171

6142

5810

5314

4577

3410

6865

6711

6306

5731

4906

7587

7243

6770

6122

8018

7699

7263

6677

4719

39.6

26.0

72.1

62.0

46.2

30.1

98.1

91.6

82.8

70.5

51.9

33.7

122

117

103

78.1

57.1

37.0

145

141

130

113

85.0

165

156

142

123

91.4

184

180

169

154

131

203

194

181

164

215

206

195

179

127

3447

2281

6202

5376

4030

2638

8373

7870

7156

6128

4540

2952

10,365

10,012

8879

6800

4999

3236

12,274

12,009

11,180

9793

7413

13,931

13,289

12,253

10,634

7980

15,584

15,294

14,475

13,247

11,416

17,235

16,566

15,584

14,179

18,189

17,579

16,688

15,432

11,068

92.4

61.1

166

144

108

70.7

224

211

192

164

122

79.1

278

268

238

182

134

86.7

329

322

300

262

199

373

356

328

285

214

418

410

388

355

306

462

444

418

380

487

471

447

414

297

3447

2281

6202

5376

4030

2638

8373

7870

7156

6128

4540

2952

10,365

10,012

8879

6800

4999

3236

92.4

61.1

166

144

108

70.7

224

211

192

164

122

79.1

278

268

238

182

134

86.7

15,584

15,294

14,475

13,247

11,416

17,235

16,566

15,584

14,179

18,189

17,579

16,688

15,432

11,068

12,274

12,009

11,180

9793

7413

13,931

13,289

12,253

10,634

7980

462

444

418

380

487

471

447

414

297

418

410

388

355

306

373

356

328

285

214

329

322

300

262

199

23

Bulletin 71.2:EZR

Table 16. Manometric Device Specifications

(1)

SPRING RANGE psig

4.02 to

14.1 in. w.c.

9.97 to

33.2 in. w.c.

18 in. w.c. to

2.0 psig

1.0 to 3.5

1.7 to 5.6

2 to 11

4 to 19

7 to 33

15 to 75

31 to 161

59 to 235

bar

10 to 35 mbar

25 to 83 mbar

45 mbar to

0.14 bar

0.07 to 0.24

0.11 to 0.38

0.14 to 0.75

0.25 to 1.3

0.45 to 2.3

1.0 to 5.1

2.1 to 11.0

4.0 to 16.0

SPRING

COLOR

Purple

Orange

Red

Yellow

Green

Gray

Brown

Black

Blue

Brown

Black

SPRING

PART

NUMBER

T14232T0012

T14233T0012

T14234T0012

T14235T0012

T14236T0012

T14238T0012

T14239T0012

T14240T0012

T14237T0012

T14239T0012

T14240T0012

MAXIMUM

SENSING

INLET

PRESSURE psig

75

235

bar

5.2

16.2

MANOMETRIC

SENSING

DEVICE TYPE

162

71

MANOMETRIC

SENSING

DEVICE

STYLE

Diaphragm

SETPOINT

TOLERANCE psig

(1)

0.058 0.004

0.073

0.145

0.203

0.261

0.725

1.16

2.47

5.08

10.2

23.2

bar

0.005

0.01

0.01

0.02

0.05

0.08

0.17

0.35

0.70

1.6

MAXIMUM

DIFFERENCE

BETWEEN

OVERPRESSURE

AND

UNDERPRESSURE (2) psig bar

0.145

0.363

0.725

0.870

2.18

5.08

8.70

16.0

36.3

79.8

145

0.01

0.03

0.05

235 to 323

323 to 588

588 to 808

808 to 1470

16.0 to 22.0

22.0 to 40.0

40.0 to 55.0

55.0 to 100

Brown

Black

Brown

Black

T14239T0012

T14240T0012

T14239T0012

T14240T0012

1470

1470

100

100

27

17

Piston

43.5

94.3

102

174

3.0

6.5

7.0

12.0

Requires use of Types BMS1 and BMS2

81 to 323

122 to 514

5.5 to 22.0

8.3 to 35.0

Brown

Black

T14239T0012

T14240T0012

514 35.4

236

Bellows

14.5

36.3

1.00

2.5

145

290

10.0

20.0

257 to 1058 17.5 to 72.0

Gray T14238T0012 1058 72.9

315 72.5 5.0

479 33.0

1. Minimum suggested difference between slam-shut set pressure and normal operating pressure of the system.

2. Maximum difference between overpressure and underpressure when using one manometric device (Type BMS1) with tripping hook. For underpressure and overpressure points greater than this maximum number, use a second manometric device (Type BMS2) for underpressure protection.

0.06

0.15

0.35

0.60

1.1

2.5

5.5

10.0

Table 17. Applications and Construction Guide (See Figure 9)

APPLICATION

MECHANISM BOX REQUIRED

Type BM1 Type BM2

MANOMETRIC SENSING DEVICE REQUIRED

Type BMS1 Type BMS2

Overpressure Shutoff (OPSO)

Underpressure Shutoff (UPSO)

Yes

Overpressure Shutoff (OPSO) and


Overpressure Shutoff (OPSO) and


Overpressure Shutoff (OPSO), Overpressure Shutoff

(OPSO) and Underpressure Shutoff (UPSO)

Yes

No

No

Yes

Yes

Yes

Yes

(1)

(2)

(2)

No

Yes

Yes (1)

1. When using one manometric sensing device (Type BMS1 or BMS2) for both overpressure and underpressure shutoff, make sure that the difference between set pressures falls within the maximum range shown in Table 16.

2. When using two manometric sensing devices (Type BMS1 and a Type BMS2), the Type BMS1 can only be used for high trip.

24

TYPE BM1

FRANCEL

TYPE BM2

Bulletin 71.2:EZR

FRANCEL

TYPE BMS1

FRANCEL

E0564

MECHANISM BOX (TYPE BM1) WITH

1 MANOMETRIC SENSING DEVICE (TYPE BMS1)

Figure 8. Types of Installation (Mounting on Horizontal Pipeline Only)

TYPE BMS1

(RIGHT SIDE)

BMS2

(LEFT SIDE)

FRANCEL

E0565

MECHANISM BOX (TYPE BM2) WITH

2 MANOMETRIC SENSING DEVICES (TYPES BMS1 AND BMS2)

MECHANISM BOX

FIRST-STAGE RESET

PIN (WHITE)

SETPOINT ADJUSTMENT RING

SECOND-STAGE

RESET SHAFT

Figure 10. Slam-Shut Device in Closed Position

TRAVEL STOP

Figure 9. Slam-Shut Device in Open Position

Table 18. Approximate Weights Including 161EB Series, 161AY Series, PRX Series Pilot and Restrictor (1)(2)

BODY SIZES,

NPS / DN

CAST IRON MAIN VALVE BODY,

NPT lbs / kg

CL125 FF CL250 RF

WCC OR LCC STEEL MAIN VALVE BODY, lbs / kg

NPT, SWE or BWE

CL150 RF CL300 RF CL600 RF

1 and 1-1/4 /

25 and 32

2 and 2 x 1 /

50 and 50 x 25

3 / 80

4 / 100

6 x 4 / 150 x 100

8 x 4 / 200 x 100

6 / 150

- - - -

52 / 24

- - - -

50 / 23

89 / 40

140 / 64

- - - -

- - - -

59 / 27

106 / 48

155 / 70

- - - -

22 / 10

51 / 23

103 / 47

139 / 63

270 / 122

390 / 177

200 / 91

- - - -

205 / 93 225 / 102

8 x 6 / 200 x 150

12 x 6 / 300 x 150 - - - - - - -

8 / 200

1. Add an additional 15 lbs / 7 kg to get the weight with a 161AY Series pilot.

2. Add an additional 5 lbs / 2 kg to get the weight of PRX Series pilot.

600 / 272

1160 / 526

- - - -

24 / 11

54 / 24

107 / 49

145 / 66

280 / 127

461 / 209

210 / 95

571 / 259

994 / 451

635 / 288

28 / 13

58 / 26

110 / 50

159 / 72

292 / 132

515 / 234

235 / 107

625 / 284

1102 / 500

685 / 310

32 / 15

65 /29

123 / 56

192 / 87

394 / 179

600 / 272

350 / 159

680 / 308

1590 / 721

790 / 358

- - - -

WITH INTEGRAL SLAM SHUT, lbs / kg

CL150 RF CL300 RF CL600 RF

44 / 20 46 / 21 49 / 22

86 / 39

138 / 63

177 / 80

- - - -

423 / 192

90 / 41

141 / 64

191 / 87

- - - -

465 / 211

95 / 43

154 / 70

224 / 102

- - - -

537 / 244

- - - - - - -

25

Bulletin 71.2:EZR

RESTRICTOR

PILOT SUPPLY FILTER

PILOT

CONTROL LINE

BLOCK VALVE

BLOCK VALVE

HAND VALVE

B2681


HAND VALVE

CONTROL LINE

ALTERNATE CONTROL LINE

11A—Overpressure and Underpressure Shutoff Using One Manometric Device

(This Application Might Require Two Manometric Devices As Shown In Figure 11C)

RESTRICTOR


PILOT

CONTROL LINE

BLOCK VALVE

BLOCK VALVE

HAND VALVE

B2682

SENSE LINE

CONTROL LINE


11B—Minimum and Maximum Upstream and Downstream Pressure

RESTRICTOR


PILOT

CONTROL LINE

HAND VALVE


BLOCK VALVE

BLOCK VALVE

HAND VALVE

B2683


HAND VALVE

CONTROL LINES

HAND VALVE


11C—Overpressure and Underpressure Shutoff Using Separate Manometric Devices

Figure 11. Type EZROSX with Integral Slam-Shut Device Installation Schematics

26

Bulletin 71.2:EZR


UPSTREAM BLOCK VALVE

RESTRICTOR

PILOT

CONTROL LINE

BLOCK VALVE

HAND VALVE



B2684

RESTRICTOR

EXTERNAL TRIP

PRESSURE

13D—External Signal

RESTRICTOR

PILOT


BLOCK VALVE

EXHAUST

PIPING

HAND VALVE

CONTROL LINE

CONTROL LINE

PILOT

HAND VALVE

BLOCK VALVE

HAND

VALVE

HAND

VALVE


B2685

CONTROL LINE

11E—Wide-Open Monitoring System with Slam-Shut Device for Overpressure and Underpressure Shutoff Using One Manometric Device

(This Application Might Require Two Manometric Devices As Shown In Figure 11F)

CONTROL LINE

RESTRICTOR

RESTRICTOR


MONITOR PILOT

WORKING PILOT


PILOT

HAND VALVE

BLOCK VALVE

EXHAUST

PIPING

BLOCK VALVE

HAND

VALVE


HAND

VALVE

B2685

CONTROL LINE

HAND

VALVE

11F—Working Monitoring System with Slam-Shut Device for Overpressure and Underpressure Shutoff Using Two Manometric Devices

(This Application Might Only Require One Manometric Device As Shown In Figure 11E)

Figure 11. Type EZROSX with Integral Slam-Shut Device Installation Schematics (continued)

27

Bulletin 71.2:EZR

E

1/4 NPT UPSTREAM

INLET (SUPPLY)

CONNECTION

C

A

V-TRIM

REMOVAL

CLEARANCE

F

3.25 /

83

4.19 /

106

A/2

3/4 NPT

DOWNSTREAM

CONTROL LINE

CONNECTION

D

B2482

TYPE EZR WITH 161AY SERIES PILOT

3.00 / 76

CAP REMOVAL

CLEARANCE

E

E

TRAVEL

INDICATOR

COVER

REMOVAL

CLEARANCE

C

F

MAIN VALVE

TRIM REMOVAL

CLEARANCE

V

G

161EB SERIES

1/4 NPT DOWNSTREAM

CONTROL CONNECTION

TYPE 112 1/4 NPT

UPSTREAM SUPPLY

CONNECTION

B2483

IN. / mm

A/2

TYPE EZR WITH 161EB SERIES PILOT

Figure 12. Typical EZR Dimensions

Table 19. Typical EZR Dimensions

BODY

SIZE,

In. / DN

1, 1-1/4 /

25, 32

2, 2X1 /

50, 50X25

3 / 80

4 / 100

6X4 /

150X100

8X4 /

200X100

6 / 150

8X6 /

200X150

12X6 /

300X150

8 /

200

SWE

NPT

8.25 /

210

11.25 /

286

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

125FF

150RF

7.25 /

184

10 /

254

11.75 /

298

13.88 /

353

17.75 /

451

21.38 /

543

17.75 /

451

21.38 /

543

29 /

737

21.38 /

543

250RF

300RF

7.75 /

197

10.5 /

267

12.5 /

317

14.5 /

368

18.62 /

473

22.38 /

568

18.62 /

473

22.38 /

568

30.5 /

775

22.38 /

568

A

600RF

BWE

8.25 /

210

11.25 /

286

13.25 /

337

15.5 /

394

20 /

508

24 /

610

20 /

508

24 /

610

32.25 /

819

24 /

610

C

2 /

51

2 /

51

3.8 /

96

3.8 /

96

3.8 /

96

3.8 /

96

3.8 /

96

3.8 /

96

3.8 /

96

4.5 /

114

161AY

15.7 /

399

15.8 /

401

16.3 /

414

16.7 /

424

16.7 /

424

16.7 /

424

19.1 /

485

19.1 /

485

19.1 /

485

20.5 /

521

D

2.5 /

64

3.06 /

78

3.81 /

97

5.06 /

129

5.31 /

135

6.94 /

176

5.31 /

135

7.2 /

183

10 /

254

8.25 /

210

DIMENSIONS, In. / mm

E

161EB

6.23 /

158

6.6 /

168

7.54 /

191

7.38 /

187

8.96 /

228

8.96 /

228

9.86 /

250

9.86 /

250

9.86 /

250

14.5 /

368

PRX

6.54 /

6.54

7.2 /

183

8.21 /

208

8.68 /

220

8.68 /

220

8.68 /

220

10.6 /

269

10.6 /

269

10.6 /

269

13.79 /

349

F

161EB

12.67 /

322

12.96 /

329

14.99 /

381

16.55 /

420

17.87 /

454

17.93 /

455

17.78 /

451

18.6 /

471

18.6 /

471

23.5 /

597

161AY

10.1 /

257

10.17 /

258

11.37 /

289

12.75 /

324

15.3 /

387

15.3 /

387

15.2 /

386

16.6 /

422

19.3 /

490

16.5 /

419

G

PRX

10.89 /

276

11.13 /

283

13.6 /

334

14.53 /

369

14.53 /

369

14.53 /

369

16.49 /

419

16.49 /

419

16.49 /

419

15.44 /

392

8.67 /

220

8.9 /

226

12.58 /

319

14.72 /

374

15.75 /

400

15.82 /

402

16.49 /

419

16.6 /

422

19.3 /

490

20.6 /

522

V

8 /

203

11 /

279

19.5 /

495

20.7 /

526

21.6 /

549

21.6 /

549

22.8 /

579

25.9 /

658

29 /

737

27 /

686

28

Bulletin 71.2:EZR

D

H

Y

TYPE 162 TYPE 71

Ø 6.75 /

171

3.68 /

93

2.50 /

64

DIAPHRAGM BMS

Ø 2.81 /

71

TYPE 27

4.82 /

122

TYPE 17

Ø 2.82 /

72

PISTON BMS

2.82 /

72

Ø 2.82 /

72

TYPE 236

TYPE BMS2

0.98 /

25

TYPE BMS1

3.27 /

83

3.27 /

83

4.78 /

121

MECHANICAL

BOX REMOVAL

CLEARANCE

19B8970

TYPE EZROSX WITH 161AY SERIES PILOTS AND TYPE 252 FILTER

Figure 13. Typical EZROSX Dimensions

Table 20. Typical EZROSX Dimensions

BODY SIZE, In. / DN

1 / 25

2, 2X1 / 50, 50 X 25

3 / 80

4 / 100

6 / 150

H

9.78 / 248

10.39 / 264

11.78 / 299

13.5 / 343

12.99 / 330

DIMENSION, In. / mm

D

12.34 / 313

12.95 / 329

14.34 / 364

16.06 / 408

15.55 / 395

TYPE 315

Ø 2.92 /

74

3.53 /

90

BELLOWS BMS

Ø 2.93 /

74

IN. / mm

Y

10.33 / 262

10.94 / 278

12.33 / 313

14.05 / 357

13.54 / 344

29

Bulletin 71.2:EZR

Ordering Information

The precision slotted cage of the EZR Series regulator offers superior noise attenuation. For a standard installation, as well as to obtain a noise prediction for your installation and service conditions, please complete the specifications worksheet at the bottom of the ordering guide on page 32.

Type EZR Ordering Guide

Type (Select One)

EZR

EZROSX (with slam shut)

Body Size (Select)

NPS 1 / DN 25 (Available in steel only)***

NPS 1-1/4 x 1 / DN 32 x 25 (Available in

NPT steel only)***

NPS 2 / DN 50***

NPS 2 x 1 / DN 50 x 25***

NPS 3 / DN 80***

NPS 4 / DN 100***

NPS 6 x 4 / DN 150 x 100***

NPS 8 x 4 / DN 200 x 100***

NPS 6 / DN 150***

NPS 8 x 6 / DN 200 x 150***

NPS 12 x 6 / DN 300 x 150***

NPS 8 / DN 200***

Body Material and End Connection Style (Select One)

(NPS 8 / DN 200 size available only in LCC steel

CL150, CL300 or CL600 RF)

Cast Iron Body

NPT (Available in NPS 2 or 2 x 1 / DN 50 or

50 x 25 only)***

CL125 FF***

CL250 RF***

WCC or LCC Steel Body

NPT (Available in NPS 1, 1-1/4 x 1, 2 x 1 or 2 /

DN 25, 32 x 25, 50 x 25 or 50 only)***

CL150 RF***

CL300 RF***

CL600 RF***

SWE (Available in NPS 1, 2 x 1 or 2 /

DN 25, 50 x 25 or 50 only)*

BWE 40**

BWE 80*

PN 16/25/40* _____________ specify

Main Valve Diaphragm Material (Select One)

17E68 Nitrile (NBR) (low temperature) (Not available on NPS 6 or 8 / DN 150 or 200 size)***

17E97 Nitrile (NBR) (high-pressure/ erosion resistance)***

17E88 Fluorocarbon (FKM) (high aromatic hydrocarbons) (Not available on NPS 8 /

DN 200 size)**

30

Carefully review each specification, then complete the

Ordering Guide on pages 30 and 31. If a pilot setpoint is not requested, the regulator will be factory set at the approximate midrange.

Cage, Percent of Full Capacity (Select One)

100 percent (

standard)***

60 percent (Not available on 8 / DN 200 size)***

30 percent (Not available on 8 / DN 200 size)***

Main Valve O-ring Material (Select One)

Nitrile (NBR) ( standard)***

Fluorocarbon (FKM)**

Main Valve Main Spring (See Table 7 for Maximum

Inlet Rating) (Select One)

NPS 1, 1-1/4 or 2 x 1 / DN 25 or 50 x 25 Main Valve

Light Blue***

Black***

Black with white stripe***

Red Stripe***

NPS 2 / DN 50 Main Valve

Yellow***

Green***

Red***

Purple


Yellow***

Light Blue***

Black***

NPS 4, 6 x 4 or 8 x 4 / DN 100, 200 x 150 or

300 x 150 Main Valve

Yellow***

Green***

Red***

NPS 6, 8 x 6 or 12 x 6 / DN 150, 200 x 150 or

300 x 150 Main Valve

Yellow***

Green***

Red***


Yellow***

Green***

Red***

Travel Indicator (Select One)

No ( standard)***

Yes***

Bulletin 71.2:EZR

Type EZR Ordering Guide (continued)

Inlet Strainer (Select One)

No ( standard)***

Yes***

Inlet Body Tap (Select One)

Inlet body tap only ( standard)***

Inlet body tap with pre-piped pilot supply***

Inlet/outlet body taps only***

Inlet/outlet body taps with pre-piped pilot supply and pilot bleed***

Pilot Diaphragm Material (Select One)


Fluorocarbon (FKM)**

Pilot O-ring Material (Select One)


Fluorocarbon (FKM)***

Pilot Valve Plug Material (Select One)


Fluorocarbon (FKM)***

Pilot Type and Outlet Pressure Range (Select One)

Type 161AY

6 to 15 in. w.c. / 15 to 37 mbar, Olive Drab***

0.5 to 1.2 psig / 0.03 to 0.08 bar, Yellow***

1.2 to 2.5 psig / 0.08 to 0.17 bar, Light Green***

2.5 to 4.5 psig / 0.17 to 0.31 bar, Light Blue***

4.5 to 7 psig / 0.31 to 0.48 bar, Black***

Type 161AYM

6 to 15 in. w.c. / 15 to 37 mbar, Olive Drab***

0.5 to 1.2 psig / 0.03 to 0.08 bar, Yellow***

1.2 to 2.5 psig / 0.08 to 0.17 bar, Light Green***

2.5 to 4.5 psig / 0.17 to 0.31 bar, Light Blue***

4.5 to 7 psig / 0.31 to 0.48 bar, Black***

Type 161EB

5 to 15 psig / 0.34 to 1.0 bar, White***

10 to 40 psig / 0.69 to 2.8 bar, Yellow***

30 to 75 psig / 2.1 to 5.2 bar, Black***

70 to 140 psig / 4.8 to 9.7 bar, Green***

130 to 200 psig / 9.0 to 13.8 bar, Blue***


(intermediate reduction pilot on the Type EZR worker/monitor systems)

200 to 350 psig / 13.8 to 24.1 bar, Red***

Type 161EBM

5 to 15 psig / 0.34 to 1.0 bar, White***

10 to 40 psig / 0.69 to 2.8 bar, Yellow***

30 to 75 psig / 2.1 to 5.2 bar, Black***


130 to 200 psig / 9.0 to 13.8 bar, Blue ***

200 to 350 psig / 13.8 to 24.1 bar, Red***

Type PRX120/125

14.5 to 26 psig / 1.00 to 1.8 bar, Yellow***


41 to 80 psig / 2.8 to 5.5 bar, Blue***

73 to 123 psig / 5.0 to 8 bar, Black***

116 to 210 psig / 8 to 14 bar, Silver***

203 to 334 psig / 14 to 23 bar, Gold***

319 to 435 psig / 22 to 30 bar, Aluminum***

Type PRX120/125-AP

435 to 1000 psig / 30 to 69 bar, Clear***

Type 252 Pilot Supply Filter (Optional)

Material

Stainless steel***

Aluminum**

Length

Standard***

Extended**

Drain Valve

Yes***

No**

Conversion Trim Package (Optional, Not available for

NPS 8 / DN 200 size)

Yes, send one conversion trim package. (If ordering replacement trim package for change-out of existing

E-body to a Type EZR, be sure to mark selection of the following items on this page: body size, diaphragm material, inlet strainer option and travel indicator option desired.)

Main Valve Replacement Parts Kit (Optional)

Yes, send one diaphragm cartridge and O-rings kit to match this order.

Yes, send one diaphragm and O-rings kit to match this order.

Pilot Replacement Parts Kit (Optional)

Yes, send one replacement kit to match this order.

Wireless Position Monitor Mounting Kit (Optional)

Yes, send one mounting kit for mounting the Topworx 4310 or the Fisher ® 4320 wireless position monitor (requires Travel

Indicator option)

31

Bulletin 71.2:EZR

Type EZR Ordering Guide (continued)

Specification Worksheet

Application (Please designate units):

Specific Use

Line Size

Gas Type and Specific Gravity

Gas Temperature

Does the Application Require Overpressure Protection?

Yes No If yes, which is preferred:

Relief Valve Monitor Regulator Shutoff Device

Is overpressure protection equipment selection assistance desired?

Pressure:

Maximum Inlet Pressure (P

1max

)

Minimum Inlet Pressure (P

Downstream Pressure Setting(s) (P

Maximum Flow (Q max

)

1min

)

2

)

Performance Required:

Accuracy Requirements?

Need for Extremely Fast Response?

Other Requirements:

* * *

* *

Regulators Quick Order Guide

Readily Available for Shipment

Allow Additional Time for Shipment

*

Special Order, Constructed from Non-Stocked Parts.

Consult your local Sales Office for Availability.

Availability of the product being ordered is determined by the component with the longest shipping time for the requested construction.

Industrial Regulators

Emerson Process Management

Regulator Technologies, Inc.

USA - Headquarters

McKinney, Texas 75070 USA

Tel: +1 800 558 5853

Outside U.S. +1 972 548 3574

Asia-Pacific

Shanghai 201206, China

Tel: +86 21 2892 9000

Europe

Bologna 40013, Italy

Tel: +39 051 419 0611

Middle East and Africa

Dubai, United Arab Emirates

Tel: +971 4811 8100

Natural Gas Technologies


Regulator Technologies, Inc.

USA - Headquarters

McKinney, Texas 75070 USA

Tel: +1 800 558 5853

Outside U.S. +1 972 548 3574

Asia-Pacific

Singapore 128461, Singapore

Tel: +65 6770 8337

Europe

Bologna 40013, Italy

Tel: +39 051 419 0611

Chartres 28008, France

Tel: +33 2 37 33 47 00

Middle East and Africa

Dubai, United Arab Emirates

Tel: +971 4811 8100

For further information visit www.emersonprocess.com/regulators

TESCOM


Tescom Corporation

USA - Headquarters

Elk River, Minnesota 55330-2445, USA

Tels: +1 763 241 3238

+1 800 447 1250

Europe

Selmsdorf 23923, Germany

Tel: +49 38823 31 287

Asia-Pacific

Shanghai 201206, China

Tel: +86 21 2892 9499

The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls International LLC, a business of Emerson Process Management.

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. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.

Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.

©Emerson Process Management Regulator Technologies, Inc., 1999, 2015; All Rights Reserved

Type EZR Series Pressure Reducing Regulator

EZR Series Pressure Reducing Regulator

Robust

Thoroughly Tested

Quiet Operation

Exceptional Design

Internally Actuated

NPS 1, 1-1/4 x 1, 2 x 1, 2, 3, 4, 6 and 8 / DN 25, 32 x 25, 50 x 25, 50,

80, 100, 150, 200 and EW Body Sizes

Introduction

Features and Benefits

Pilot Type Descriptions

Pilot Selection Considerations

Optional Pilot Supply Filter

Specifications

Specifications (continued)

Principle of Operation

Installation (Figure 8)

Monitoring Systems

Wide-Open Monitoring Systems (Figure 5)

Working Monitoring Regulators (Figure 6)

Overpressure Protection

Capacity Information

Slam-Shut Device Principle of Operation

Ordering Information

Type EZR Ordering Guide

Type EZR Ordering Guide (continued)

Type EZR Ordering Guide (continued)

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