
Type EZH Relief or Backpressure Regulator
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a business of Emerson Process Management.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or
guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specications of such
products at any time without notice.
Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and
maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.
©Emerson Process Management Regulator Technologies, Inc., 2012, 2013; All Rights Reserved
Industrial Regulators
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75069-1872, USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Pacic
Shanghai 201206, China
Tel: +86 21 2892 9000
Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Middle East and Africa
Dubai, United Arab Emirates
Tel: +971 4811 8100
Natural Gas Technologies
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75069-1872, USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Pacic
Singapore 128461, Singapore
Tel: +65 6770 8337
Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Chartres 28008, France
Tel: +33 2 37 33 47 00
TESCOM
Emerson Process Management
Tescom Corporation
USA - Headquarters
Elk River, Minnesota 55330-2445, USA
Tels: +1 763 241 3238
+1 800 447 1250
Europe
Selmsdorf 23923, Germany
Tel: +49 38823 31 287
Asia-Pacic
Shanghai 201206, China
Tel: +86 21 2892 9499
For further information visit www.emersonprocess.com/regulators
Key Description Part Number
*Recommended Spare Part
6 Upper Spring Seat GD25336X012
7 Spring See Table 2
8 Spring Case GD29854X012
9 Spring Carrier Plate GD25338X012
10 Machine Screw M5011018X12
11 Washer GD05500X012
12 Filter GD50036X012
13 Diaphragm Plate GD25339X012
14* Diaphragm
Nitrile (NBR) GG05785X012
Fluorocarbon (FKM) GG05785X022
15 Diaphragm Plate GD25341X012
16 Body GD25331X012
17* Orice O-ring
Nitrile (NBR) GD02012X012
Fluorocarbon (FKM) GD02012X022
18* Lower Cover O-ring
Nitrile (NBR) GD01009X012
Fluorocarbon (FKM) GD01009X022
19 Orice GD25344X012
PRX Series Pilot Parts List (continued)
Key Description Part Number
20 Nut GD00200X012
21 Lower Cover GD29860X012
22* Disk Holder
Nitrile (NBR) GD25340X012
Fluorocarbon (FKM) M0279950X12
23 Stem GD25343X012
24 Nameplate GD26808X012
25* Stem O-ring
Nitrile (NBR) GD01022X012
Fluorocarbon (FKM) GD01022X022
26 Upper Diaphragm Nut GD02800X012
27 Damper Adjusting Screw with Hole GD25348X012
28* Restrictor/Damper O-ring GD02005X022
29 Damper/Restrictor Plate
Types PRX/182 and PRX-AP/182 GD25440X012
Types PRX/182 and PRX-AP/182 GD25793X012
31 Nameplate Screw GD06100X012
33 Plug (Type PRX/182) GD50032X012
34 Plug (Type PRX/182) GD25792X012
35 Spring Barrel Extension for AP GD27410X012
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