Fisher EZR Bedienungsanleitung

Type EZR Pilot-Operated Regulator

SUMMARY

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

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

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

Dimensions and Weights ......................................................... 5

Principle of Operation .............................................................. 8

Installation .................................................................................. 10

Startup and Adjustment ........................................................... 11

Maintenance .............................................................................. 12

Spare Parts ................................................................................ 16

Figure 1. Type EZR with Type OS2 Slam-Shut Valve

INTRODUCTION

Scope of Manual

This manual provides installation, startup, maintenance and

spare parts ordering information for the Type EZR pressure

reducing regulator, PRX Series pilots and Type FU lter.

Product Description

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

off rapidly and totally in the case of under or over outlet

regulator pressure.

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

• An inlet strainer

• A pilot assembly consisting of a FU lter (ltration

5 microns) and a pilot set to the required outlet pressure

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 pilot assembly consisting of a FU lter (ltration 5 microns)

and a pilot adjusted to the required outlet pressure

• A removable slam shut seat

• A integral O-ring tightshut valve/bypass assembly

• A release relay Type OS2 according to NTAOS2:

- a mechanism box (BM)

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

side of the regulator

The Type EZR is in conformity with the

Pressure Equipment Directive PED 2014/68/EU

and is classied in category IV.

Figure 2. PRX Series Pressure Reducing Pilots

TYPE PRX-120/APTYPE PRX-120

Type EZR

Instruction Manual

D103682X012

June 2018

Europe, Middle East and Africa Only

CHARACTERISTICS

Pilot Description

Type PRX Pilot

The Type EZR pressure reducing regulator can be equiped

with a PRX Series pilot mounted on the Type EZR main valve

for pressure reducing or wide-open monitoring applications.

The PRX Series pressure reducing pilots have the ability to

handle a wide range of set points ranging from 1 to 80 bar:

• 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.

Regulator Options

• Travel Indicator

(1) BMS - Safety Manometric Box

(2) BMP - Pilot Manometric Box

(3) Depending on choice of BMS and BMP

(4) Standard version

Table 1. General Characteristics for Type EZR Regulator

OPERATING PRESSURE

A352LCC Body, Actuator, Valve,

Pilot Body, Slam Shut PS 72.4 bar

Associated BMS(1), according to size PSD 10 to 100 bar

BMP(2), according to size 100 bar

Type DS

Differential strength

(3)

OPERATING TEMPERATURE TS -20 / 66°C(4)

REGULATOR

Sizes available DN 25, 50, 80, 100, 150

European EN Standard EN 334

Inlet Pressure Pu 3 to 72.4 bar

Outlet Pressure Pd 1 to 69 bar

Minimum Differential DP min 2 to 3 bar

Maximum

Differential

PN 20

DP max

18.6 bar

PN 50 50.0 bar

PN 100 55.2 bar

Accuracy (optimal) AC Up to ± 5%

Lock-Up Pressure Class SG Contact factory

Lock-Up Pressure Zone Class SZ Contact factory

SLAM SHUT

European EN Standard EN 14382

Operation Class

A or B (see g. 3)

Maximum Operating Differential DP max 69.4 bar

Response Time ta < 1 s

Accuracy Diaphragm, Bellows AG ± 2.5%

Piston ± 5%

Set Pressure Range

Wdu-

Wdo

0.010 to 100 bar

FlowCoefcient Qf 13

Internal Automatic Bypass Cg 25

Rearming Manual after rectication of fault

Position Indicator On mechanism box

Fluid

Groups 1 and 2 according to PED 2014/68/EU, Gas 1st and 2nd family

according to EN 437 or other gases (compressed air, nitrogen).

The gas must be non corrosive, clean

(ltration on inlet side necessary) and dry.

Type EZR

Europe, Middle East and Africa Only

Material

Regulator

Body Steel

Bonnet Steel

Slotted disc Stainless steel

Diaphragm, O-rings Nitrile

Slam shut

Connecting part Steel

Seat Stainless steel

Valve plug Stainless steel

Pilot

Body Steel

Manometric box Stainless steel or Aluminium

Filter Steel

Connections

Inlet / Outlet: ISO PN 100 B (ANSI 600 RF)

ISO PN 50 B (ANSI 300 RF)

ISO PN 20 B (ANSI 150 RF)

Other possibilities exist (contact factory)

ISO PN 16 B, 25 B, 40 B

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: 1/4’’ NPT tapped

Mechanism box vent: 1/4’’ NPT tapped

Impulse diameter: Pipe interior Ø 8/10 mm minimum

Table 2. Flow Coefcients and Valve Plug Travel

B05a

B05b

Table 3. 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

COEFFICIENTS 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

Type EZR

Europe, Middle East and Africa Only

E04A

LABELLING

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

Figure 4. Label for Type EZR Regulator

E04b

bar bar -20/+66°C

bar

DD MM YEAR

EN 334

A352LCC+A350LF2 CE0062

EZR -

OS2 -

Standard EN 14382 -

BMS 027/017 BMS 162

BMS 236/315 BMS 071

Min only ll

Max-Min types of BMS

Security Class

BMS Setting

Max only

DN 25 50 80 100 150

20B1 50B1 100B2 16B 25B 40B

Other configurations available (contact factory)

Reduction

Cg See Table2

100%

60%

30%

Depending on BMS configuration

Pumax

18.6

100

72.4

114

72.4

REGULATEUR/REGULATOR

SECURITE/SLAM-SHUT

DN 25 50 80 100 150

Other configurations available

20B1 50B1 100B2 16B 25B 40B

Reduction

Cg See Table2

100%

60%

30%

Date DD MM YEAR

Pumax

18.6

100

72.4

114

72.4

barbar

bar

EN 334

-20/+66°C

A352LCC+A350LF2

CE0062

EZR

REGULATEUR/

REGULATOR

Type EZR

Europe, Middle East and Africa Only

223 MAX

Disassembly 25

223 MAX

DIMENSIONS AND WEIGHTS

B14A

B14B

Figure 5. Type EZR Dimensions with Slam Shut

Figure 6. Type EZR Dimensions without Slam Shut

223 MAX

Disassembly 25

223 MAX

Type EZR

Europe, Middle East and Africa Only

Table 6. BMS (Safety Manometric Box) Dimensions (mm)

B17B

TYPE F G

Diaphragm 162 181

Piston 71 204

Bellows 74 223

B16B

Table 5. Regulator Weight with Slam Shut (kg)

Table 4. Regulator Dimensions with Slam Shut (mm)

B15B

BODY DN PN 20 PN 50 PN 100

25 20 21 22

50 39 41 43

80 63 69 71

100 104 113 123

150 192 211 244

BODY DN B C E H

25 233 315 252 250

50 243 330 261 265

80 361 366 314 301

100 393 410 358 345

150 423 396 372 332

Type EZR

Europe, Middle East and Africa Only

Table 9. Body Dimensions with/without Slam Shut (mm)

B17a

B16A

Table 8. Regulator Weight without Slam Shut (kg)

B15A

Table 7. Dimensions without Slam Shut (mm)

BODY DN B C E

25 220 62 239

50 226 83 245

80 343 105 297

100 372 137 336

150 420 178 368

BODY,

D JPN

16 20 25 40 50 100

25 193.5 184 193.5 193.5 197 210 173 68

50 254 254 267 267 267 286 171 68

80 310 298 317 317 317 337 181 95

100 350 352 368 368 368 394 177 95

150 451 451 473 473 473 508 200 95

BODY DN PN 20 PN 50 PN 100

25 12 14 16

50 26 27 31

80 50 51 57

100 67 73 88

150 97 108 161

Type EZR

Europe, Middle East and Africa Only

PRINCIPLE OF OPERATION

B18A

Figure 7. Type EZR E Body with Type PRX Pilot

Regulator

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

Tight shutoff 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 Pm decreases.

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.

Type EZR

Europe, Middle East and Africa Only

Figure 8. Type EZR X Body with Integral Type OS2 Slam Shut and Type PRX Pilot

B18B

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 (Type 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 seat.

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.

Type EZR

Europe, Middle East and Africa Only

Figure 11. Type EZR Working Monitor System Installation with Type PRX Pilots

Block Valve Block Valve

Type PRX/120

Working Pilot

Control Line

Supply Pressure Line

Pu Pd

Working Regulator

Monitor Regulator

Type PRX/125

Monitor Pilot

Supply

Pressure

Line

Type

PRX/120

Pilot IP

(1)

(1) Plugged

B19C

INSTALLATION

Figure 9. Type EZR Single Installation with Type PRX Pilot and Separate Pilot Exhaust Line

Figure 10. Type EZR Wide-Open Monitoring System Installation with Type PRX Pilot (Upstream and Downstream)

Block Valve Block Valve

Type PRX/120

Pilot

Control Line

Supply Pressure Line

Pu Pd

Downstream Regulator

Upstream Regulator

Pilot Exhaust

Type

PRX/120

Pilot

Supply Pressure Line

Block Valve Block Valve

Pilot Exhaust

Type PRX Pilot

Control Line

Supply Pressure Line

Pu Pd

IP B19A

B19B

Type EZR

Europe, Middle East and Africa Only

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