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S201 and S202 Series

D400007X012

Instruction Manual

Form 5171

October 2009

www.emersonprocess.com/regulators

S201 and S202 Series Gas Regulators

Fisher

regulators must be installed,

operated, and maintained in accordance

with federal, state, and local codes, rules

and regulations, and Emerson Process

Management Regulator Technologies,

Inc., instructions.

For LP-Gas service, an approved

regulator (such as one listed by U.L.)

should be used. The installation,

in most states, must comply with

NFPA standards.

If the regulator vents gas or a leak

develops in the system, service to

the unit may be required. Failure

to correct trouble could result in a

hazardous condition.

Call a gas service person to service

the unit. Only a qualied person must

install or service the regulator.

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 S202H regulators contain an

internal relief valve. Units with an “H” or “K” sufx

are similar to the basic regulators but deliver a higher

outlet pressure of 1 to 5 psig (69 mbar to 0,35 bar) and

2 to 10 psig (0,14 to 0,69 bar), respectively.

Specications

The Specications section lists the specications for

the regulators. The following information is stamped

on the regulator at the factory: type number, date of

manufacture, spring range, orice size, maximum inlet

pressure, maximum operating outlet pressure, and

outlet pressure which may damage regulator parts.

1 2 3 4 5 6 7 8

S201 and S202 Series 1

Inhaltsverzeichnis

Seite 1 - S201 and S202 Series

S201 and S202 SeriesD400007X012Instruction ManualForm 5171October 2009www.emersonprocess.com/regulatorsS201 and S202 Series Gas RegulatorsFisher® regu

Seite 2

S201 and S202 Series2SpecicationsPrinciple of OperationRefer to Figure 2. When downstream demand decreases, the pressure under the diaphragm increas

Seite 3

S201 and S202 Series3Figure 4. Type S201 Regulator Installed with the Vent Pointed Downward and with a Type 289H Relief Valve for High Capacity Relie

Seite 4

S201 and S202 Series4Before installing the regulator, check for damage which might have occurred in shipment. Also check for dirt or foreign matter w

Seite 5

S201 and S202 Series5 1. Check to see that all appliances are turned off. 2. Slowly open the upstream block valve. 3. Check inlet and outlet pre

Seite 6

S201 and S202 Series6Parts ListKey Description Part Number Spare Parts (Repair Parts Kit includes keys 5, 7, 16, and 19)

Seite 7

S201 and S202 Series7Figure 5. Type S202 Regulator Assembly50A9455PARTS NOT SHOWN: 46 APPLY LUB/SEA/ADHSECTION A-AAAVENT6261585560565759184532689

Seite 8

S201 and S202 SeriesThe Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective own