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EZR

Technical Manual

NTAEZR0206

July 2004 - Rev 01

SUMMARY

INTRODUCTION ................................................................ 1

DESCRIPTION.................................................................... 1

CHARACTERISTICS .......................................................... 2

LABELLING ......................................................................... 2

SPARE PARTS .................................................................... 3

OPERATION........................................................................ 5

DIMENSIONS AND WEIGHTS ............................................ 6

INSTALLATION ................................................................... 7

COMMISSIONING ............................................................... 8

MAINTENANCE .................................................................. 9

INTRODUCTION

The EZR is a pilot-operated regulator used in transmission and distribution

networks or pipe lines supplying industries and commercial businesses.

The EZR can be equipped with a slam shut type OS2 (EZR body

change) which permits the gas flow to be cut off rapidly and totally in the

case of under or over outlet regulator pressure.

DESCRIPTION

The 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 filter with bleeding screw (filtration

20 microns), an adjustable restrictor and a pilot set to the required

outlet pressure

PILOT-OPERATED REGULATOR

Type EZR

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 filter with bleeding screw (filtration

20 microns), an adjustable restrictor and a pilot adjusted to the

required outlet pressure

• A removable slam shut orifice

• 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 EZR is in conformity with the

PED 97/23/EC and is classified in category IV.

Europe, Middle East, and Africa Document Only

1 2 3 4 5 6 ... 10 11

Inhaltsverzeichnis

Seite 1 - PILOT-OPERATED REGULATOR

EZRTechnical ManualNTAEZR0206July 2004 - Rev 01SUMMARYINTRODUCTION ... 1DESCRIPTION...

Seite 2 - LABELLING

10EZRMAINTENANCEDISASSEMBLYRecommended frequency:Every 2 to 6 years (or less depending on operating conditions)Verification:Condition of O-rings, diap

Seite 3 - SPARE PARTS

11EZRNatural Gas TechnologiesEmerson Process ManagementRegulator Technologies, Inc.Francel SAZ.A. La Croix Saint Mathieu28320 Gallardon, FranceTel : +

Seite 4

2EZRCoefficients Capacity DN 25 DN 50 DN 80 DN 100 DN 150100 % 480 1800 3400 5550 11200Cg 60 % 290 1020 1970 3300 715030 % 140 560 970 1690 3570100 %

Seite 5 - OPERATION

3EZRPilot, Restrictor, Filter spare partsReferenceDescription Item Pilot type161EB 161EBH 161EBM 161EBHMPilot kit 0.34 to 13.8 bar 15 R161X000012 R161

Seite 6 - DIMENSIONS AND WEIGHTS

4EZRB12SPARE PARTSEZR SPARE PARTSRegulatorEZRwithslam shutEZR withoutslam shutEZRwith/withoutslam shutB13ReferenceDescription Item DN mm (inches)25 (

Seite 7 - WARNING

5EZROPERATIONREGULATORThe EZR is a pilot-driven, diaphragm/plug regulator.Tight shutoff is achieved by the diaphragm/plug pushing against the slottedc

Seite 8 - COMMISSIONING

6EZRBody DN B C E H25 233 315 348 25050 243 330 357 26580 361 366 410 301100 393 410 454 345150 423 396 468 332Body DN PN 20 PN 50 PN 10025 20 21 2250

Seite 9

7EZRB19INSTALLATION• The regulator is installed on horizontal pipeline. Version withslam shut, the release relay is situated towards the bottom (seesc

Seite 10 - MAINTENANCE

8EZRCOMMISSIONINGOperations concerning the integral slam shut version are in italic.All interventions on equipment should only be performed byqualifie

Seite 11

9EZRMAINTENANCEOperations concerning the integral slam shut version are in italic.SERVICING CHECKRecommended frequency:• Twice yearly minimumVerificat