Emerson EZR Series Pressure Reducing Regulator Instruction Manual download pdf

Europe, Middle East, and Africa Document Only

Type EZR

Instruction Manual

NTAEZRPRX0702

February 2007 - Rev 02

Type EZR Pilot-Operated Regulator

SUMMARY

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

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

Labelling ..................................................................................... 3

Dimensions and Weights ......................................................... 4

Principle of Operation .............................................................. 5

Installation .................................................................................. 6

Startup and Adjustment ........................................................... 8

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

Spare Parts ................................................................................ 12

Figure 1. Type EZR with 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 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 ow to be cut off rapidly and

totally in the case of under or over outlet regulator pressure.

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

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 EZR is in conformity with the

Pressure Equipment Directive PED 97/23/EC

and is classied in category IV.

Figure 2. PRX Series Pressure Reducing Pilots

TYPE PRX-120/APTYPE PRX-120

1 2 3 4 5 6 ... 17 18

Summary of Contents

Page 1 - Type EZR

Europe, Middle East, and Africa Document Only Type EZRInstruction ManualNTAEZRPRX0702February 2007 - Rev 02Type EZR Pilot-Operated RegulatorSUMMARYInt

Page 2

Europe, Middle East, and Africa Document Only Type EZR10Verify the absence of pressure between inlet and outlet valvesSlam shut valve plug• Closed -PR

Page 3

Europe, Middle East, and Africa Document Only Type EZR11B22Figure 12. Type EZR Startup SchematicPILOT TYPERECOMMENDED TYPE PRX RESTRICTOR AND DAMPER

Page 4 - LABELLING

Europe, Middle East, and Africa Document Only Type EZR12DisassemblyRecommended frequency:Every 2 to 6 years (or less depending on operating conditions

Page 5 - DIMENSIONS AND WEIGHTS

Europe, Middle East, and Africa Document Only Type EZR13B24BFigure 13. Type EZR Maintenance SchematicSYMPTOMS CAUSE ACTIONSIf outlet pressure is incr

Page 6

Europe, Middle East, and Africa Document Only Type EZR14SPARE PARTSTable 14. Type EZR Main Valve Spare PartsRegulator Type Description Key N° QtyDN 2

Page 7

Europe, Middle East, and Africa Document Only Type EZR15Pilot Type Description Key N° Qty DN 25 DN 50 DN 80 DN 100 DN 150PRX/120 or PRX/125 Spare part

Page 8 - INSTALLATION

Europe, Middle East, and Africa Document Only Type EZR16242317222015161918142167891011121314212421231722Figure 14. Type EZR X Body with OS2 Slam Shut

Page 9

Europe, Middle East, and Africa Document Only Type EZR17Figure 17. Type PRX Series PilotsType PRX/120 or PRX/125Type PRX/120 or PRX/120-APType PRX/12

Page 10

Europe, Middle East, and Africa Document Only Type EZRThe Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are th

Page 11

Europe, Middle East, and Africa Document Only Type EZR2CHARACTERISTICSPilot DescriptionType PRX PilotThe Type EZR pressure reducing regulator can be e

Page 12

Europe, Middle East, and Africa Document Only Type EZR3Material RegulatorBody SteelBonnet SteelSlotted disc Stainless steelDiaphragm, O-rings Nitr

Page 13

Europe, Middle East, and Africa Document Only Type EZR4E04ALABELLINGFigure 3. Label for Type EZR Regulator with OS2 Slam ShutPNPTPSPumax2018.618.632R

Page 14

Europe, Middle East, and Africa Document Only Type EZR5A223 MAXCHFGDisassembly 25BJDEBJDECA223 MAXDIMENSIONS AND WEIGHTSB14ATable 6. BMS (Safety Mano

Page 15

Europe, Middle East, and Africa Document Only Type EZR6PRINCIPLE OF OPERATIONB18AFigure 7. Type EZR E Body with PRX PilotRegulatorThe EZR is a pilot-

Page 16

Europe, Middle East, and Africa Document Only Type EZR7Figure 8. Type EZR X Body with Integral OS2 Slam Shut and PRX PilotB18BSlam ShutThe pressure o

Page 17

Europe, Middle East, and Africa Document Only Type EZR8Figure 11. Type EZR Working Monitor System Installation with PRX PilotsBlock ValveBlock ValveT

Page 18

Europe, Middle East, and Africa Document Only Type EZR9Personal injury or equipment damage, due to bursting of pressure-containing parts may result if