Emerson CS200 Instruction Manual

Instruction Manual
Form 5832

November 2013

CS200 Series

CS200 Series Commercial / Industrial Pressure
Reducing Regulators

P1188

Figure 1. Typical CS200 Pressure Reducing Regulator

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Speci cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation and Overpressure Protection . . . . . . . . . . 6

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

www.fisherregulators.com

Introduction

Scope of the Manual

This manual provides instructions for the installation,
maintenance, and parts ordering information for
Types CS200IN, CS200IR, CS205IN, CS205IR, and
CS206IR service regulators.

D103119X012

CS200 Series

Table 1. Available Congurations

TYPE NUMBER OPTIONS

C S 2 0

OVERPRESSURE PROTECTION MODULE

0 Without Overpressure Protection Module

5 With Secondary Seat™ Protection

6

I Internal Registration

Table 2. Inlet Pressure Ratings and Flow and Sizing Coefcients

MAXIMUM

TYPE

CS200

CS205

and

CS206

1. Inlet pressures based on lockup performance. For maximum inlet pressure values with optimum regulating performance, refer to the applicable Flow Capacity Table on CS200 Series Bulletin.

2. To comply with ANSI B109.4 relief requirements, the maximum inlet pressure may need to be reduced.

ORIFICE SIZE

Inch mm psig bar psig bar C

1/8 3.2 125 8.6

3/16 4.8 125 8.6 24 0.8 30 0.58 0.82

1/4 6.4 125 8.6 44 1.52 29 0.53 0.85
3/8 9.5 60 4.1 102 3.3 31 0.6 0.83
1/2 13 40 2.8 172 4.4 39 0.97 0.72
1/8 3.2 125 8.6 17 0.6 28 0.5 0.82

3/16 4.8 125 8.6 37 1.4 27 0.49 0.8

1/4 6.4 125 8.6 65 2.2 30 0.5 0.8

5/16 7.9 100 6.9 88 2.7 33 0.65 0.79

OPERATING INLET

PRESSURE TO
PROVIDE OPTIMUM
PERFORMANCE

(1)(2)

EMERGENCY INLET

PRESSURE

175 12.1

With Secondary Seat Protection with bleed to indicate Secondary Seat
is functioning

PRESSURE REGISTRATION

RELIEF

N Non-Relief

R Internal Relief

MAXIMUM

(2)

FLOW

COEFFICIENTS

(WIDE-OPEN)

g

12 0.4 30 0.53 0.87

C

v

C

1

IEC SIZING COEFFICIENTS

X

T

F

D

0.89

F

L

WARNING

!

Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion

and/or re causing property damage and

personal injury or death.

®

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. (Regulator
Technologies) instructions.

2

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 shall install

or service the regulator.

Description

The CS200 Series regulators are typically installed
on industrial and commercial applications. All
constructions include internal pressure registration.
Types CS200IR, CS205IR, and CS206IR contain an
internal relief valve. Types CS200IN and CS205IN do
not contain internal relief.

CS200 Series

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.

Available Congurations

Type CS200IN: Basic construction with Internal
pressure registration and Non-Relieving
diaphragm assembly
Type CS200IR: Basic construction with Internal
pressure registration and Relieving
diaphragm assembly
Type CS205IN: Type CS200IN with

TM

Secondary Seat

Protection

Type CS205IR: Type CS200IR with
Secondary Seat Protection
Type CS206IR: Type CS200IR with
Secondary Seat Protection with bleed to indicate that

the Secondary Seat is providing lockup
See also Table 1

Body Sizes, End Connection Style, and
Pressure Rating

(1)

See Table 4

Outlet Pressure Ranges

See Table 3

Spring Case Vent Connection

Orice Sizes

See Table 2

Flow and IEC Sizing Coefcients

See Table 2

Maximum Inlet Pressures

Emergency: 175 psig / 12.1 bar
Operating: See Table 2

Maximum Outlet Pressures

Casing: 25 psig / 1.7 bar
To Avoid Internal Parts Damage:

5 psi / 0.34 bar differential above outlet
pressure setting

Operating: 2 psig / 138 mbar

Temperature Capabilities

-20 to 150°F / -29 to 66°C

Pressure Registration

Internal

Approximate Weight

8 pounds / 3.6 kg

1 NPT

1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

2. Product has passed Regulator Technologies testing for lockup, relief start-to-discharge and reseal down to -40°.

(1)

(1)

(1)(2)

Table 3. Outlet Pressure Ranges

SERIES

CS200

SPRING RANGE

Inches w.c. mbar Inch mm Inch mm

3.5 to 5

4.5 to 6.5
6 to 8

7.5 to 11
10 to 14
12 to 19

18 to 1 psig

1 to 2 psig

9 to 12
11 to 16
15 to 20
19 to 27
25 to 35
30 to 47
45 to 69

69 to 138

PART NUMBER COLOR CODE

GE30198X012
GE30195X012
GE30188X012
GE30189X012
GE30224X012
GE30196X012
GE30225X012
GE30190X012

Red

Purple

Gold
Blue

Unpainted

Green

Orange

Black

Table 4. Body Sizes, Material, End Connection, and Pressure Rating

SERIES BODY SIZE, NPS END CONNECTION BODY MATERIAL

3/4

3/4 x 1

CS200

3/4 x 1-1/4

1

1 x 1-1/4

1-1/4

NPT Gray Cast Iron 175 12.1

SPRING WIRE DIAMETER SPRING FREE LENGTH

0.102

0.090

0. 111

0.112

0.102

0.112

0.120

0.145

2.59

2.28

2.82

2.84

2.59

2.84

3.04

3.68

psig bar

3.95

4.32

4.48

4.40

4.78

4.40

4.94

4.66

PRESSURE RATING

100
110
114
112
121
112
125
118

3

CS200 Series

ERAA03487

RELIEF VALVE STEM

DISK

VALVE STEM

ORIFICE

LEVER

WIRE SEAL (OPTIONAL)

PUSHER POST

CONTROL SPRING

RELIEF VALVE SPRING

DIAPHRAGM

RELIEF SEAT

PRESSURE RETAINING PLUG
(DO NOT REMOVE)

Figure 2. Type CS200IR Pressure Reducing Regulator with Internal Relief Operational Schematic

Principle of Operation

Type CS200 Base Regulator Operation

Refer to Figure 2. When downstream demand decreases,
the pressure under the diaphragm increases. This pressure
overcomes the regulator setting (which is set by the control
spring). Through the action of the pusher post assembly,
lever, and valve stem, the valve disk moves closer to the

orice and reduces gas ow. If demand downstream

increases, pressure under the diaphragm decreases.
Spring force pushes the pusher post assembly downward

and the valve disk moves away from the orice.

CS200 Series with Internal Relief

Refer to Figure 2. The option for Internal Relief is offered
on the Types CS200 and CS205 and is standard on the

Type CS206. Internal relief is used to help minimize

overpressure. Any outlet pressure above the start-to­discharge point of the non-adjustable relief spring moves the
diaphragm off of the relief seat, allowing excess pressure
to discharge through the vent. Typical start-to-discharge
values are 7 inches w.c. to 1.5 psi / 17 to 103 mbar above
the outlet pressure setting, depending on control spring and
if the Secondary Seat™ option is present. Refer to Table 5
for Type CS205 lockup values and Type CS206 downstream
build-up values. Refer to the CS200 Series Bulletin for
additional information regarding Internal Relief start-to-

discharge both with and without Secondary Seat Protection.
If emergency conditions should exist that prevent normal
operation of the regulator or internal relief valve, the relief
valve stem acts as a secondary travel stop contacting the
underside of the closing cap and stopping the upward travel
of the relief seat. When the diaphragm continues to rise as
downstream pressure builds, the diaphragm lifts off of the
relief seat to provide relief operation.

Type CS205 with Secondary
Seat Protection

Refer to Figure 3. The Type CS205 provides
Secondary Seat Protection. As downstream demand
decreases and downstream pressure rises to the regulator
pressure lockup value, the regulator will lock up. If,
however, damage has occurred to the primary disk, to the

primary orice’s seating surface, or debris has become
lodged between the primary disk and primary orice,

the outlet pressure will continue to rise. This additional
pressure causes the primary disk to apply additional force

to the orice seating surface, which causes the Secondary

seating surface to move toward the Secondary disk or
sealing surface. If downstream demand decreases to

zero, then the secondary seating surface will contact

the sealing surface to provide lockup. Refer to
Table 5 for approximate lockup values provided by the
Secondary Seat.

4