Emerson Fisher EZR User manual

Type EZR

Europe, Middle East and Africa Only

Summary

Introduction......................................................................... 1

Description.......................................................................... 1

Characteristics.................................................................... 2

Labelling ............................................................................. 4

Operation............................................................................ 5

Dimensions and Weights.................................................... 6

Installation .......................................................................... 7

Commissioning................................................................... 9

Maintenance.......................................................................10

Spare Parts.........................................................................13

INTRODUCTION

The Type EZR is a pilot-operated regulator used in

transmission and distribution networks or pipe lines

supplying industries and commercial businesses.

The Type EZR can be equipped with a slam shut Type OS2

(Type EZR body change) which permits the gas ow to be

cut o󰀨 rapidly and totally in the case of under or over outlet

regulator pressure.

Description

Main Valve

The Type EZR consists of:

A version without integral slam shut:

• A body («E body» type), a bonnet

• A regulation subassembly consisting of a slotted cage and

a diaphragm/plug

• A travel indicator, an inlet screen

• A pilot assembly consisting of a lter, an adjustable restrictor

and a pilot

A version with integral slam shut:

• A body («X body» type), a bonnet, a connecting part

• A regulation subassembly consisting of a slotted cage

and a diaphragm/plug

• A travel indicator

• A pilot assembly consisting of a lter, an adjustable restrictor

and a pilot

• A slam shut orice

• A integral O-ring tightshut valve/bypass assembly

• A release relay Type OS2 according to

D103683X012_OS2_IM:

- a mechanism box (BM)

- a safety manometric box (BMS) to be connected outlet

side of the regulator

Pilot-Operated Regulator

Instruction Manual

D103681X012

January 2020

The Type EZR is in conformity with the

PED 2014/68/EU and is classied in Category IV.

Figure 1. Type EZR Pilot-Operated Regulator

B05c

Type EZR

Europe, Middle East and Africa Only

Pilot

Type PRX/120:

Outlet pressure range of 1 to 40 bar. The Type PRX/120

can be used as the pilot on single stage pressure reducing

regulators or as the monitor pilot or as the working pilot in

wide-open monitor systems.

Type PRX/120-AP:

Outlet pressure range of 30 to 80 bar. The Type PRX/120-

AP can be used as the pilot on single stage pressure

reducing regulators or as the monitor pilot or as the working

pilot in wide-open monitor systems.

Type PRX/125:

Identical to the Type PRX/120 except the restriction screw

is removed. The Type PRX/125 can only be used as the

monitor override pilot on working monitor applications.

• Type PRX/125-AP:

Identical to the Type PRX/120-AP except the restriction

screw is removed. The Type PRX/125-AP can only

be used as the monitor override pilot on working

monitor applications.

• Type 161EB

High accuracy pilot with an outlet pressure range of 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 161EBH

The high pressure version of the Type 161EB pilot with an

outlet pressure range from 17.2 to 48.3 bar.

• Type 161EBHM

The high pressure version of the Type 161EBM pilot with

an outlet pressure range from 17.2 to 48.3 bar.

Regulator Options

• Travel Indicator

• Relief Size-reduction Trim

CHARACTERISTICS

Table 1. General Characteristics for Type EZR Regulator

Operating pressure PS 72.4 bar(1) SLAM SHUT

Operating temperature TS -17 / 66°C(1)

Accuracy AG 2.5

REGULATOR 5 (Piston)

Outlet pressure Pa 0.35 to 69 bar Set point range Pt up to 100 bar

Minimum di󰀨erential ∆P min 2 to 3 bar

Fluid

Groups 1 and 2 according to PED 97/23/EC 1st and 2nd family gas according

to EN 437 or other gases (compressed air, nitrogen). The gas must be

noncorrosive, clean (ltration on inlet side necessary) and dry.

Maximum operating di󰀨erential

PN 20

∆P max

18.6 bar

PN 50 50.0 bar

PN 100 55.2 bar

Max emergency di󰀨erential ∆P emerg 72.4 bar

Accuracy AC 2.5 - 5

1. Values correspond to the characteristics of the regulator diaphragm.

Table 2. Pressure and Temperature Characteristics

Body Pmax (bar) Tmin (°C) Tmax (°C)

A216WCB 96.7 -20 71

A352LCC 100 -30 71

The regulator body and the slam shut have been designed to support di󰀨erent pressure and temperature levels

B05a

B05b

Type EZR

Europe, Middle East and Africa Only

Material

Regulator

Body Steel

Bonnet Steel

Slotted disc Stainless steel

Diaphragm, O-rings Nitrile (NBR)

Slam shut

Connecting part Steel

Orice Stainless steel

Valve plug Stainless steel

Pilot

Body Stainless steel or Steel

Manometric box Stainless steel or Aluminium

Restrictor Stainless steel

Filter Aluminium or Steel

Cartridge Polythene

Connections

Inlet / Outlet: CL150 RF - CL300 RF - CL600 RF

PN 16B - PN 25B - PN 40B

Other congurations

available (contact factory)

Pilot Impulse line (IP): 1/4’’ NPT tapped

Pilot Monitor impulse line (IM): 1/4’’ NPT tapped

Intermediate impulse line (PI): 1/4’’ NPT tapped

Slam shut impulse line (IS): 1/4’’ NPT tapped

Mechanism box vent (E): 1/4’’ NPT tapped

Impulse diameter: Pipe interior Ø 8/10 mm min.

Table 4. Pilot Pressure Ranges

Type Outlet Pressure Range, bar Pilot Control Spring Information

Spring Color Part Number

PRX/120

PRX/125

1.0 to 1.8

1.8 to 3.0

3.0 to 5.5

5.5 to 8.5

Yellow

Green

Blue

Black

M0255240X12

M0255230X12

M0255180X12

M0255220X12

8.5 to 14.5

14.5 to 23.0

23.0 to 30.0

30.0 to 40.0

Silver

Gold

Aluminium

Red

M0255210X12

M0255200X12

M0255860X12

M0255190X12

PRX/120-AP

PRX/125-AP 30.0 to 80.0 Clear M0273790X12

161EB

161EBM

0.35 to 1.0

0.69 to 2.8

2.1 to 5.2

4.8 to 9.7

9.0 to 13.8

13.8 to 24.1

White

Yellow

Black

Green

Blue

Red

17B1260X012

17B1262X012

17B1259X012

17B1261X012

17B1263X012

17B1264X012

161EBH

161EBHM

17.2 to 31.0

27.6 to 48.2

Blue

Red

17B1263X012

17B1264X012

Table 3. Flow Coecients and Valve Plug Travel Information

Coe󰀩cients Capacity DN 25 DN 50 DN 80 DN 100 DN 150

100% 480 1800 3400 5550 11200

60% 290 1020 1970 3300 7150

30% 140 560 970 1690 3570

100% 33 36 37 38 36

60% 29 28 29 27 30

30% 30 29 26 26 26

Valve plug travel (mm) 35 35 50 50 50

0062

(Gaz Naturel)

28320 Gallardon-France

REGULATEUR/

REGULATOR

GROUPE

N°

série

serial

DateFab/Test

Mfg/Test date

Cat

norme

standard

EN 334

mode défaillance

failure mode

DN PN

Pumax bar

FISHER

FRANCEL

PT bar

Temp TS -17/+66°C

Class

Type Cg

matériau

shell

A352LCC+A350LF2

bar

Other configurations available(contactfactory)

EZR

Date DD MM YEAR

DN 25 50 80 100

150

CL150 RF CL300 RF CL600 RF 16B 25B 40B

PNCLASS

Pumax

150

18.6

Reduction

CgSee Flow Table 3

100%

60%

30%

300

600

72.4

114

72.4

16B

25B

40B

Reduction

CgSee Tabl e3

0062

(Gaz Naturel)

28320 Gallardon-France

REGULATEUR/REGULATOR

EZR -

SECURITE/SLAM-SHUT

GROUPE

N°

série

serial

Date Fab/Test

Mfg/Test date

CatPS

norme

standard

norme

standard

EN 334

mode défaillance

failure mode

classe sécurité

slam shut class

DN PN

Pumax bar

FISHER

FRANCEL

PT bar Temp TS -17/+66°C

Class Type Cg

matériau

shell

A352LCC+A350LF2

OS2 -

Standard EN 14382 -

BMS 027/017 BMS 162

BMS 236/315 BMS 071

Min onlyAll

Max-Min Types of BMS

SecurityClass

BMS Setting

DN 25 50 80 100

Otherconfigurations available (contactfactory)

DD MM YEAR

bar

Max only

Depending on BMS configuration

150

100%

60%

30%

CL150 RF CL300 RF CL600 RF 16B 25B 40B

PNCLASS

Pumax

150

18.6

300

600

72.4

114

72.4

16B

25B

40B

E04a

E04b

Type EZR

Europe, Middle East and Africa Only

LABELLING

Figure 2. Type EZR Regulator Label

Figure 3. Type EZR Regulator with Type OS2 Slam Shut Label

B18

Type EZR

Europe, Middle East and Africa Only

Figure 4. Type EZR Operational Schematic

OPERATION

Regulator

The Type EZR is a pilot-driven, diaphragm/plug regulator.

Tight shuto󰀨 is achieved by the diaphragm/plug pushing

against the slotted cage, the force of the closing spring and

the inlet pressure.

• Opening

As the ow increases, the outlet pressure Pd

decreases on the outlet side of the regulator and on

the pilot diaphragm.

Due to the force of the spring, the pilot opens.

The pilot ow increases, the pressure loss through the

pilot restrictor increases.

The modulated pressure Pmdecreases.

The force of the closing spring and that of the Pm

becomes inferior to that provoked by the Pu, the

regulator OPENS.

• Closing

As the ow decreases, the Pd increases outlet side of

the regulator.

The force of the pilot diaphragm is overcome by the force

of the spring, the pilot closes.

The pressure loss through the pilot restrictor decreases.

The force of the closing spring and that of the Pm

becomes superior to that provoked by the Pu, the

regulator CLOSES.

Slam Shut

The pressure of the zone to be protected (generally the pipeline

on the outlet side of the regulator and after the slam shut) is

sensed by the safety manometric box (BMS).

If the pressure exceeds the set tripping pressure, the release

relay frees the valve plug.

Due to the force of the closing spring and the uid (trying to

close), the valve plug closes on the orice.

The gas ow is obstructed until the fault has been corrected

and the mechanism box manually rearmed.

To reopen the valve plug an equal pressure balance on inlet

and outlet sides of the regulator is required.

The mechanism box is rearmed after opening the

internal bypass.

Rearming and balancing are achieved at the same time.

INLET PRESSURE

MODULATED PRESSURE

OUTLET PRESSURE

223 MAX

Disassembly 25

223 MAX

Disassembly 25

223 MAX

B17a

B15b

B16b

B15a

B16a

B17b

B14b

B14a

Type EZR

Europe, Middle East and Africa Only

DIMENSIONS AND WEIGHTS

Table 5. Dimensions (mm) - Type EZR-OS2 (part 1)

Body

DN B C

Type 161EB

Pilot

Type PRX

Pilot

25 233 315 348 252 250

50 243 330 357 261 265

80 361 366 410 314 301

100 393 410 454 358 345

150 423 396 468 372 332

Table 6. Weights (kg) - Type EZR-OS2

Body DN CL150 RF CL300 RF CL600 RF

25 20 21 22

50 39 41 43

80 63 69 71

100 104 113 123

150 192 211 244

Table 7. Dimensions (mm) - Type EZR (part 1)

Body DN B C

Type 161EB

Pilot

Type PRX

Pilot

25 220 62 335 239

50 226 83 340 245

80 343 105 392 297

100 372 137 433 336

150 420 178 465 368

Table 8. Weights (kg) - Type EZR

Body DN CL150 RF CL300 RF CL600 RF

25 12 14 16

50 26 27 31

80 50 51 57

100 67 73 88

150 97 108 161

Table 9. Dimensions (mm) - Types EZR and EZR-OS2 (part 2)

Body DN

D J MPN CLASS

16 25 40 150 300 600

25 193.5 193.5 193.5 184 197 210 165 68 54

50 254 267 267 254 267 286 165 68 54

80 310 317 317 298 317 337 181 95 54

100 350 368 368 352 368 394 187 95 54

150 451 473 473 451 473 508 249 95 54

Table 10. Dimensions (mm) - BMS (Safety Manometric Box)

Type F G

Diaphragm 162 181

Piston 71 204

Bellows 74 223

Figure 5. Dimensions (mm) - Type EZR-OS2 Figure 6. Dimensions (mm) - Type EZR

! !

B19

Type EZR

Europe, Middle East and Africa Only

INSTALLATION

Personal injury or equipment damage, due

to bursting of pressure-containing parts may

result if this regulator is over-pressured or

is installed where service conditions could

exceed the limits given in the Specication

section and on the appropriate nameplate,

or where conditions exceed any rating of the

adjacent piping or piping connections.

To avoid such injury or damage, provide

pressure-relieving or pressure-limiting

devices to prevent service conditions

from exceeding those limits. Also, be sure

the installation is in compliance with all

applicable codes and regulations.

Additionally, physical damage to the regulator

could break the pilot o󰀨 the main valve,

causing personal injury and property damage

due to bursting of pressure-containing parts.

To avoid such injury and damage, install the

regulator in a safe location.

Only personnel qualied through training and

experience should install, operate and maintain

a regulator. Before installation, make sure

that there is no damage to, or debris in, the

regulator. Also make sure that all tubing and

piping are clean and unobstructed.

• The regulator is installed on horizontal

pipeline. Version with slam shut, the

release relay is situated towards the

bottom (see schematic).

• Installation according to

EN12186 recommended.

• Install according to direction of uid

ow (arrow).

• When assembling with adjacent elements

care must be taken not to create pressure

force on the body and the assembling

elements (bolts, O-rings, anges) should be

compatible with the geometry and working

conditions of the equipment.

All interventions on the equipment should only be performed by qualied and trained personnel.

Figure 7. Type EZR Installation Congurations

WARNING WARNING

! !

B18B

Type EZR

Europe, Middle East and Africa Only

• If the case arises a support must be used to

avoid pressure force on the body (a support

can be installed under the anges).

• Version with integral slam shut , connect the

safety manometric box (IS) to the impulse at

4D on a straight run of the outlet pipe.

• It is recommended to separate the slam

shut impulse line (IS) from that of the pilot

(IP). Do not connect the impulses on the

lower generator line.

• It is recommended to install an isolation

valve and an atmospheric valve, which

can be useful for slam shut tripping

and verications.

• No modication should be made to the

structure of the equipment (drilling,

grinding, soldering...).

• It is recommended to install a servicing valve

on the outlet pipeline to facilitate adjustments

and bleeding o󰀨 to the atmosphere.

• Verify that the inlet side is protected by an

appropriate device(s) to avoid exceeding

the limits of utilization (PS, TS).

• Verify that the limits of utilization

correspond to the appropriate operating

conditions.

• Version with integral slam shut, verify

that the safety manometric box (BMS)

and spring correspond to the appropriate

operating conditions on the outlet side of

the regulator.

• The equipment should not receive any type

of shock, especially the release relay.

• The user should verify or carry out a

protection adapted to the environment.

• Fire, seismic and lightening are not taken

into consideration in standard regulators.

If required, a special product selection and/

or specic calculations may be supplied

according to specic requirements.

• Version without integral slam shut, verify

that a pressure limiting device on the outlet

side of the regulator guarantees a pressure

limit inferior or equal to the pilot PS.

WARNING WARNING

Figure 8. Type EZR-OS2 Regulator

INLET PRESSURE (Pu)

MOTORIZATION PRESSURE (Pm)

OUTLET PRESSURE (Pd)

ATMOSPHERIC PRESSURE (Pb)

OPTIONAL

Triggered

position

B20

Stages 2 and 3

Stage 1

Figure 9. Setpoint Verication Phase

Type EZR

Europe, Middle East and Africa Only

COMMISSIONING

Operations concerning the integral slam shut version are

in italic.

All interventions on equipment should only be

performed by qualied personnel

Preliminary Verications

Start-up positions

• Inlet and outlet valves

Closed

Verify the absence of pressure between inlet and

outlet valves

• Slam shut valve plug

Closed

• Pilot A

Unloaded

• Restriction B

START position

Slam shut set point verication

Using the atmospheric valve, inject a pressure equal to the

pressure required for the regulator

• 1st release relay stage

Set (Stage 1)

• Slam shut valve plug

Open (Stages 2 and 3)

Progressively increase the pressure to

reach tripping

 Adjust setting if necessary (D103683X012_OS2_IM)

Note the set point value on the equipment

or mark it on a commissioning document

Positions before commissioning

• Impulse line isolating valve

Open

• Impulse line atmospheric valve

Closed

•Slam shut valve plug

Closed

• Servicing valve

Closed

The equipment is ready for commissioning

Commissioning (Act slowly)

• Inlet valve

Open very slowly

• 1st release relay stage

Set (Stage 1)

• Slam shut valve plug

Bypass (Stage 2)

Open (Stage 3)

• Servicing valve

Open slightly

• Pilot

Screw to set outlet pressure

• Outlet valve

Open slowly

• Restriction

 Set to "RUN" by successive fractions 2, 4 or 6

• Servicing valve

Closed

The equipment is commissioned

It is recommended to seal the release relay

If the outlet pressure increasesInternal leak

Control the regulator valve plug

Control the regulator

Control the pilot or contact after-sales

If the outlet pressure decreases External leak

Locate and seal the leak or contact after-sales

If the outlet pressure is constant The regulator is tightshut

Increase the set point until tripping occurs

(without exceeding the outlet limits)

If the slam shut valve plug will not close Operating fault

Control the release relay

Control the slam shut valve plug or contact after-sales

If the slam shut valve plug closes Operating correctly

Observe the evolution of the outlet pressure (control tightness)

If the outlet pressure is constant

Purge the outlet side of the regulator

If the outlet pressure increases Internal leak

Control the slam shut valve plug

Control the slam shut

Control the bypass or contact after-sales

If the outlet pressure is constant Slam shut valve plug is tightshut

Type EZR

Europe, Middle East and Africa Only

MAINTENANCE

Operations concerning the integral slam shut version are

in italic.

Servicing Check

Recommended frequency:

• Twice yearly minimum

Verication:

• Set point verication

• Regulator valve plug tightness

• Tripping and set point value

• Slam shut valve tightness

Departure positions

• Inlet valve Open

• Outlet valve Open

• Slam shut valve plug Open

• Regulator In operation

Inlet and outlet sides of regulator under pressure

Tightshut verication (and tripping verication for

integral slam shut versions)

• Inlet valve Closed

• Outlet valve Closed

• Regulator Observe the evolution of the outlet

pressure (control regulator tightness)

Table 11. Troubleshooting for Types EZR and EZR-OS2 Regulators

Filter verication

• Purge the lter C

• Verify the lter element

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