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Instruction Manual
D103681X012
January 2020
Pilot-Operated Regulator
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 flow to be
cut off 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 filter, an adjustable restrictor
and a pilot
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, an adjustable restrictor
and a pilot
• A 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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Page 1: Table Of Contents
Instruction Manual Type EZR D103681X012 January 2020 Pilot-Operated Regulator Summary Introduction ................. 1 Description................1 Characteristics ..............2 Labelling ................4 Operation ................5 Dimensions and Weights ............ 6 Installation ................7 Commissioning ..............9 Maintenance ............... 10 Spare Parts................. 13 Figure 1. -
Page 2: Characteristics
Type EZR Pilot • Type 161EB High accuracy pilot with an outlet pressure range of 0.34 to Type PRX/120: 24.1 bar. Pilot bleeds (exhausts) downstream through the sense (control) line. Outlet pressure range of 1 to 40 bar. The Type PRX/120 can be used as the pilot on single stage pressure reducing •... - Page 3 Type EZR Table 3. Flow Coefficients and Valve Plug Travel Information Coefficients Capacity DN 25 DN 50 DN 80 DN 100 DN 150 100% 1800 3400 5550 11200 1020 1970 3300 7150 1690 3570 100% Valve plug travel (mm) B05a Table 4.
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Page 4: Labelling
Type EZR LABELLING CL150 RF CL300 RF CL600 RF 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 5: Operation
Type EZR INLET PRESSURE MODULATED PRESSURE OUTLET PRESSURE Figure 4. Type EZR Operational Schematic OPERATION The pressure loss through the pilot restrictor decreases. Regulator The force of the closing spring and that of the P becomes superior to that provoked by the P , the The Type EZR is a pilot-driven, diaphragm/plug regulator. -
Page 6: Dimensions And Weights
Type EZR DIMENSIONS AND WEIGHTS Table 5. Dimensions (mm) - Type EZR-OS2 (part 1) Table 6. Weights (kg) - Type EZR-OS2 Body DN CL150 RF CL300 RF CL600 RF Body Type 161EB Type PRX Pilot Pilot B16b B15b Table 7. Dimensions (mm) - Type EZR (part 1) Table 8. -
Page 7: Installation
Type EZR INSTALLATION Figure 7. Type EZR Installation Configurations All interventions on the equipment should only be performed by qualified and trained personnel. WARNING WARNING Personal injury or equipment damage, due Only personnel qualified through training and to bursting of pressure-containing parts may experience should install, operate and maintain result if this regulator is over-pressured or a regulator. - Page 8 Type EZR B18B INLET PRESSURE (Pu) MOTORIZATION PRESSURE (Pm) OUTLET PRESSURE (Pd) ATMOSPHERIC PRESSURE (Pb) OPTIONAL Figure 8. Type EZR-OS2 Regulator WARNING WARNING • If the case arises a support must be used to • Verify that the limits of utilization avoid pressure force on the body (a support correspond to the appropriate operating can be installed under the flanges).
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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 Triggered position Start-up positions • Inlet and outlet valves Closed Verify the absence of pressure between inlet and outlet valves •... -
Page 10: Maintenance
Type EZR MAINTENANCE Departure positions Operations concerning the integral slam shut version are in italic. • Inlet valve Open • Outlet valve Open Servicing Check • Slam shut valve plug Open Recommended frequency: • Regulator In operation ... - Page 11 Type EZR Figure 9. Type EZR-OS2 Table 12. 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 1/2 - 13 x 1 1/2...
- Page 12 Type EZR Table 13. Troubleshooting for Type EZR Regulator SYMPTOMS CAUSE ACTIONS Control the regulator valve plug Control the regulator seat If outlet pressure is increases Internal leak Control the pilot or contact after-sales Locate and repair leak If inlet pressure decreases External leak or contact after-sales Increase the set point until tripping occurs...
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Page 13: Spare Parts
Type EZR SPARE PARTS Figure 10. Types 161EB, 161EBH, 161EBM Figure 11. Type 252 Filter Figure 12. Type 112 and 161EBHM Pilots Adjustable Restrictor Table 14. 161EB Series Pilot, Type 112 Restrictor and Type 252 Filter Spare Parts List Reference Description Pilot Type 161EB... - Page 14 Type EZR Figure 13. Types EZR and EZR-OS2 Spare Parts Table 15. 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 400024...
- Page 15 Type EZR R107 Type PRX/120-AP or PRX/125-AP R106 Type PRX/120 or PRX/125 S - SUPPLY PORT R108 R109 B - BLEED PORT L - LOADING PORT Type PRX/120 or PRX/120-AP Type PRX/125 or PRX/125-AP A - SENSING PORT D - DAMPER R - RESTRICTOR Figure 14.
- Page 16 Technologies, Inc. All rights reserved. 01/20. McKinney, Texas 75070 USA Singapore 128461, Singapore The Emerson logo is a trademark and service mark of Emerson Electric T +1 800 558 5853 T +65 6777 8211 Co. All other marks are the property of their prospective owners.