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S201 and S202 Series

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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 specifications of such 

products at any time without notice.

Emerson Process Management 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 product remains solely with the purchaser.

©Emerson Process Management Regulator Technologies, Inc., 1981, 2009; 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-Pacific

Shanghai, China 201206

Tel: +86 21 2892 9000 
Europe

Bologna, Italy 40013

Tel: +39 051 4190611

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-Pacific

Singapore, Singapore 128461

Tel: +65 6777 8211
Europe

Bologna, Italy 40013

Tel: +39 051 4190611

Gallardon, France 28320

Tel: +33 (0)2 37 33 47 00

TESCOM

Emerson Process Management

Tescom Corporation

USA - Headquarters

Elk River, Minnesota 55330-2445 USA

Tel: 1-763-241-3238
Europe

Selmsdorf, Germany 23923

Tel: +49 (0) 38823 31 0

For further information visit www.emersonprocess.com/regulators

key  Description 

Part Number

  21  Body

 

  Cast Iron

 

    1-1/2 NPT 

1J190319012

 

    2 NPT 

1H974919012

 

    NPS 2 (DN 50), CL125 Flanged 

2K184219012

 

  With 1/8 NPT Test Gauge Connection

 

    1-1/2 NPT 

1P799219012

 

    2 NPT 

1P799319012

 

    NPS 2 (DN 50), CL125 Flanged 

2P806119012

 

  Steel

 

    1-1/2 NPT 

1K787922012

 

    2 NPT 

1K792122012 

  24   Cap Screw, Plated steel

 

  Type S201 

1H975424272 

              Type S201H 

1A667824052

 

  Type S201K 

1K427828982

 

Stem, Plated steel

 

  Types S202, S202H 

1H969224272

key  Description 

Part Number 

 

  25  Relief Valve Spring, Plated steel  

              (Types S202, S202H) Standard 

1H976027012

 

  For U.L. listed units with 1D8933 or

 

    lighter springs 

1R100427012

  46   Pipe Plug, 1/8 NPT, Brass 

1A621914012

  53   Hex Nut, Plated steel, Type S201K only 

1A3524X0082

  55  Flapper Stem, 302 Stainless steel 

1H976335022

  56  Lower Flapper, Nylon (PA) 

1H976406992

  57  Upper Flapper, Nylon (PA) 

1H976506992

  58  Flapper Orifice, 302 Stainless steel 

T13609T0012

  59  Self-tapping Screw, Steel (3 required) 

1H976728982

  60  Spring, 302 Stainless steel (2 required) 

1H976837022

  61  Screen, Stainless steel 

1E564843122

  62  Snap Ring, 302 Stainless steel 

1E564937022

Summary of Contents for Fisher S202

Page 1: ...ulator Warning Figure 1 Typical S200 Gas Regulator W1919 Introduction Scope of the Manual This instruction manual provides instructions for installation adjustment maintenance and parts ordering information for Types S201 S201H S201K S202 and S202H gas service regulators Description S201 and S202 Series regulators are typically installed on industrial and commercial applications The Types S202 and...

Page 2: ...Typical start to discharge values are 7 inches w c to 2 psi 17 to 138 mbar above the outlet pressure setting depending on control spring used Available Configurations See Figure 3 Body Size and End Connection Styles 1 1 2 or 2 NPT inlet and outlet and NPS 2 DN 50 CL125 FF flanged Maximum Allowable Inlet Pressures 1 See Table 1 Maximum Emergency Outlet Pressure 1 15 psig 1 0 bar Outlet Pressure Ran...

Page 3: ...utdoor installations point the spring case vent downward to allow condensate to drain see Figure 4 This minimizes the possibility of freezing and of water or other foreign materials from entering the vent and interfering with proper operation Under enclosed conditions or indoors escaping gas may accumulate and be an explosion hazard In these cases the vent should be piped away from the regulator t...

Page 4: ...le 2 Outlet pressure more than 2 psi 0 14 bar light diaphragm head or 3 psi 0 21 bar heavy diaphragm head above the setpoint may damage internal parts such as the diaphragm head and valve disk The maximum emergency casing outlet pressure is 15 psig 1 0 bar Startup caution Pressure gauges should always be used to monitor downstream pressure during startup Procedures used in putting this regulator i...

Page 5: ...pressure and relieving all internal pressure as described in Shutdown Regulators that have been disassembled for repair must be tested for proper operation before returned to service Only parts manufactured by Emerson Process Management Regulator Technologies Inc should be used for repairing Fisher regulators Relight pilot lights according to normal startup procedures Due to normal wear or damage ...

Page 6: ... tear the diaphragm when reassembling 6 Reassemble the spring case unit in the reverse order of the above steps Before tightening the cap screw or stem into the pusher post place the loosely assembled diaphragm and diaphragm head assembly into position in the lower casing being sure that the pusher post is hooked on the lever Rotate the diaphragm so that the diaphragm and lower casing holes are al...

Page 7: ... and S202 Series 7 Figure 5 Type S202 Regulator Assembly 50A9455 parts not shown 46 apply LUB SEA ADH section a a A A VENT 62 61 58 55 60 56 57 59 18 4 5 3 2 6 8 9 7 1 32 14 15 10 25 16 13 21 20 19 12 11 24 ...

Page 8: ... Management Regulator Technologies Inc USA Headquarters McKinney Texas 75069 1872 USA Tel 1 800 558 5853 Outside U S 1 972 548 3574 Asia Pacific Singapore Singapore 128461 Tel 65 6777 8211 Europe Bologna Italy 40013 Tel 39 051 4190611 Gallardon France 28320 Tel 33 0 2 37 33 47 00 TESCOM Emerson Process Management Tescom Corporation USA Headquarters Elk River Minnesota 55330 2445 USA Tel 1 763 241 ...

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