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Emerson Fisher EZR series Instruction Manual

Pilot-operated regulator
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Instruction Manual
D103681X012
December 2017
Pilot-Operated Regulator
Summary
Introduction ................................................................... 1
Description.................................................................... 1
Characteristics .............................................................. 2
Labelling ....................................................................... 3
Spare Parts................................................................... 4
Operation ...................................................................... 6
Dimensions and Weights .............................................. 7
Installation .................................................................... 8
Commissioning ............................................................. 9
Maintenance ................................................................. 10

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 flow to be
cut off rapidly and totally in the case of under or over outlet
regulator pressure.

Description

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 filter with bleeding screw
(filtration 20 microns), an adjustable restrictor and a pilot
set to the required outlet pressure
Figure 1. Type EZR Pilot-Operated Regulator
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 D103683X012_
OS2_IM:
- 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
PED 2014/68/EU and is classified in Category IV.
Type EZR

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Summary of Contents for Emerson Fisher EZR series

  • Page 1: Table Of Contents

    Instruction Manual Type EZR D103681X012 December 2017 Pilot-Operated Regulator Summary Introduction ..............1 Description..............1 Characteristics .............. 2 Labelling ............... 3 Spare Parts..............4 Operation ..............6 Dimensions and Weights ..........7 Installation ..............8 Commissioning ............. 9 Maintenance ..............10 Figure 1.

  • Page 2: Characteristics

    Type EZR CHARACTERISTICS Table 1. General Characteristics for Type EZR Regulator Operating pressure 72.4 bar SLAM SHUT Operating temperature -17 / 66°C Accuracy REgULATOR 5 (Piston) Outlet pressure 0.5 to 48.3 bar Set point range up to 100 bar Minimum differential ∆P min 2 to 3 bar PILOT...

  • Page 3: Labelling

    Type EZR Labelling 20B1 50B1 100B2 16B 25B 40B Other configurations available (contact factory) DN 25 50 80 100 REGULATEUR/ REGULATOR Reduction 100% 60% norme EN 334 standard See Flow Table 3 mode défaillance Type failure mode série Date Fab/Test N°...

  • Page 4: Spare Parts

    Type EZR Spare Parts Type 161EBH Type 161EB Type 161EBM Type 161EBHM Figure 4. Types 161EB, 161EBH, 161EBM Figure 5. Filter Figure 6. Adjustable and 161EBHM Pilots Restrictor Table 5. Pilot, Restrictor and Filter Spare Parts List Reference Spring Reference Size Description Pilot Type...
  • Page 5 Type EZR Spare Parts Figure 7. Types EZR and EZR-OS2 Spare Parts Table 6. Types EZR and EZR-OS2 Spare Parts List Reference Regulator, Description DN / in. Type EZR 25 / 1 50 / 2 80 / 3 100 / 4 150 / 6 O-ring 400009...

  • Page 6: Operation

    Type EZR INLET PRESSURE MODULATED PRESSURE OUTLET PRESSURE Figure 8. Type EZR Operational Schematic Operation Regulator The pressure loss through the pilot restrictor decreases. The Type EZR is a pilot-driven, diaphragm/plug regulator. The force of the closing spring and that of the Pm becomes superior to that provoked by the Pu, the Tight shutoff is achieved by the diaphragm/plug pushing regulator CLOSES.

  • Page 7: Dimensions And Weights

    Type EZR Dimensions and Weights Table 7. Dimensions (mm) - Type EZR-OS2 (part 1) Table 8. Weights (kg) - Type EZR-OS2 Body DN Body DN PN 20 PN 50 PN 100 B15b B16b Table 9. Dimensions (mm) - Type EZR (part 1) Table 10.

  • Page 8: Installation

    Type EZR Installation Figure 11. Type EZH Installation Configurations All interventions on the equipment should only be performed by qualified and trained personnel. WARNINg WARNINg • • The regulator is installed on horizontal pipeline. It is recommended to install a servicing valve on the Version with slam shut, the release relay is situated outlet pipeline to facilitate adjustments and bleeding towards the bottom (see schematic).

  • Page 9: Commissioning

    Type EZR Commissioning Operations concerning the integral slam shut version are in italic. All interventions on equipment should only be performed by qualified personnel Preliminary Verifications Start-up positions • Inlet and outlet valves  Closed Verify the absence of pressure between inlet and outlet valves •...

  • Page 10: Maintenance

    Type EZR Maintenance Operations concerning the integral slam shut version are in italic. Departure positions Servicing Check • Inlet valve Open  • Outlet valve Open Recommended frequency:  • Slam shut valve plug Open  • Twice yearly minimum •...
  • Page 11 Type EZR Maintenance (continued) Figure 14. Type EZR-OS2 Table 13. Torque Specifications Torque N.m. Body Screw Spanner, Screw Fixation Connector Bypass DN / In. keys 1 and 11 keys 1 and 11 keys 18 key 19 key 15 25 / 1 9/16 - 12 x 1 3/4 13/16 50 / 2...
  • Page 12 Technologies, Inc. All rights reserved. 12/17. McKinney, Texas 75070 USA Singapore 128461, Singapore The Emerson logo is a trademark and service mark of Emerson T +1 800 558 5853 T +65 6770 8337 Electric Co. All other marks are the property of their prospective owners.

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