Emerson CS800 Instruction Manual

Instruction Manual
Form 5837

November 2014

CS800 Series

CS800 Series Commercial / Industrial
Pressure Reducing Regulators

P1235

TYPE CS800 REGULATOR

P1521

TYPE CS803 REGULATOR WITH TRUE-MONITOR™ PROTECTION

Figure 1. Typical CS800 Series Pressure Reducing Regulators

Table of Contents

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

Speci cations ........................................................................2

Principle of Operation ............................................................3

Installation and Overpressure Protection ............................10

Startup .................................................................................14

Adjustment...........................................................................14

Shutdown.............................................................................16

Maintenance and Inspection................................................16

Parts Ordering .....................................................................20

Parts List..............................................................................22

P1234

TYPE CS800IQ WITH HIGH CAPACITY RELIEF

P1692

TYPE CS804IT REGULATOR WITH INTEGRAL

TYPE VSX8 SLAM-SHUT MODULE

Introduction

Scope of the Manual

This Instruction Manual provides instructions for the
installation, maintenance and parts ordering information
of CS800 Series service regulators. Instructions and parts
list for the Type TM600 Integral True-Monitor are found in
Instruction Manual D103126X012. Instructions and parts
list for the Type VSX8 slam-shut are found in Instruction
Manual D103127X012.

D103124X012

www.fisherregulators.com

CS800 Series

Specications

The Specications section lists the specications for the CS800 Series 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. Exceeding any of these limits may damage regulator parts.

Available Congurations

See Table 1

Body Sizes, Material, End Connections and
Pressure Ratings

(1)

See Table 3

Maximum Inlet Pressures

(1)

Emergency: 175 psig / 12.1 bar
Operating: See Table 4

Maximum Outlet Pressure

(1)

Emergency
Regulator Casing: 15 psig / 1.0 bar
Integral Monitor Casing: 25 psig / 1.7 bar
Integral Slam-shut Casing: 87 psig / 6.0 bar
To avoid internal parts damage: 3 psig / 0.21 bar

differential above outlet pressure setting

Operating Pressure Ranges

(1)

Regulator: See Table 5
Integral True-Monitor™: See Tables 8 and 9
Slam-shut Module: See Tables 10 to 11

Secondary Seat™ Protection Outlet Pressures

See Table 7

Spring Case Vent Connection

Internal Relief: 1 NPT
High Capacity Relief: 2-1/2 NPT

Internal Relief Performance

See Table 6

Token Relief Performance

Approximate Token Relief Start-to-Discharge:

See Table 6

Orice Sizes, Flow Coefcients and IEC Sizing Coefcients

See Table 4

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

2. Product has passed Emerson Process Management Regulator Technologies, Inc. (Emerson™) testing for lockup, relief start-to-discharge and reseal down to -40 degrees.

Pressure Registration

Internal or External

Temperature Capabilities

(1)(2)

-20 to 150°F / -30 to 66°C

According to European PED Directive that rates
products to a minimum temperature of -4°F / -20°C
and a maximum temperature of 140°F / 60°C:

-4 to 140°F / -20 to 60°C

Approximate Weight

With Threaded Body

Type CS800/CS820: 25 lbs / 11 kg
Type CS803/CS823: 34 lbs / 16 kg
Type CS804/CS824: 31 lbs / 16 kg
Type CS805/CS825: 26 lbs / 12 kg
Type CS806/CS826: 26 lbs / 12 kg

High-Pressure Types

For CS85x add 2 lbs / 1 kg to types listed above

With Flanged Body

Add 11 lbs / 5 kg to weights listed above

PED Conformity Statement and Information

Types CS800, CS804, CS820, CS824, CS850 and
CS854 are in conformity with the Pressure Equipment

Directive PED 97/23/EC and are classied under

Category I for units without a slam-shut and Category IV
for units with a slam-shut. See Table 2.

For Types CS800, CS820 and CS850, equipment and
pipeline situated on outlet side of the regulator are either

- not subject to the PED (PS ≤ 0.5 bar) or

- subject to (PS > 0.5 bar) in which case they should

come under Category I maximum

PED Related Information

See Table 2

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™ instructions.

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.

2

Call a gas service person to service the

unit. Only a qualied person must install or

service the regulator.

Description

CS800 Series regulators are typically installed on industrial
and commercial applications. See Table 1 for available

congurations. Constructions with External Registration,
e.g., Type CS800EN, require an external control line.

The CS800 Series offers multiple forms of overpressure
protection including:

Internal Relief - Minimizes downstream pressure buildup

by relieving gas through the diaphragm assembly and
out the 1 NPT vent to atmosphere in the event of an
overpressure situation.

C S 8

Table 1. Available Congurations

TYPE NUMBER

OUTLET PRESSURE CONSTRUCTION

0 Low Pressure Applications (Outlet Pressure: 3.5 to 30 in. w.c. / 9 to 75 mbar)

2 Medium Pressure Applications (Outlet Pressure: 1 to 5.5 psig / 0.07 to 0.38 bar)

5 High Pressure Applications (Outlet Pressure: 5 to 10 psig / 0.34 to 0.69 bar)

OVERPRESSURE PROTECTION MODULE

0 Without Overpressure Protection Module

3 With Integral True-Monitor Module

4 With Slam-shut Module

5 With Secondary Seat Protection

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

PRESSURE REGISTRATION

I Internal Registration

E External Registration

RELIEF

N Non-Relieving

R Internal Relief

Q High-Capacity Relief

T Token Relief

L Low Flow Token Relief

Example: Type Number CS800IR: Type CS800 regulator without Overpressure Protection Module with Internal Pressure

Registration and with Internal Relief.

1. High-pressure Construction is not available with True Monitor Protection, Secondary Seat Protection or Relief.

2. Available only with Internal Relief or High-Capacity Relief Constructions.

3. Available only with Non-Relieving or Token Relief Constructions.

4. Reference Instruction Manual D103126X012 for information regarding the Type TM600 Integral True-Monitor or Instruction
Manual D103127X012 for Type VSX8 safety slam-shut module.

(4)

(3)

(4)

OPTIONS

CS800 Series

(1)

(2)

High Capacity Relief - Provides an increase in relief
performance over basic internal relief via a 2-1/2 NPT vent

thereby offering a signicant improvement in the level of

overpressure protection to the downstream system in the
event of an overpressure occurrence.

Integral True-Monitor™ Protection - Provides a monitoring
regulator integrally mounted on the inlet side of the valve

body that assumes control of ow to the downstream system
should the primary regulator cease to regulate ow.

Secondary Seat™ Protection - Provides a solution to
the most common cause of regulators failing to shutoff by
employing a secondary seating surface to provide shutoff

in the event the primary orice seating surface becomes

damaged or blocked.

Slam-Shut Protection - Discontinues gas service
by shutting the gas off if there is an overpressure or
underpressure condition.

Principle of Operation

Types CS800, CS820 and CS850 Base
Regulators Operation

Refer to Figures 2 and 3. When downstream demand
decreases, the pressure under the diaphragm increases. This
pressure overcomes the regulator setting (which is set by the
regulator 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, the valve

disk moves away from the orice and the gas ow increases

downstream as the regulator opens in response to the
decreased pressure underneath the diaphragm.

The Type CS800IR regulator includes an internal relief valve
for overpressure protection. If the downstream pressure

exceeds the regulator setting by 7 in. w.c. to 2.5 psig / 17 to

172 mbar (depending on the type number and main spring

used), the relief valve opens and excess gas is vented
through the stabilizer vent in the upper spring case. Units
with standard internal relief valve have 1 NPT vent size,

Figure 2, while units with high-capacity relief valve have

2-1/2 NPT vent size, Figure 3.

The Types CS800IT, CS800IL, CS800ET and CS800EL
provide a low-capacity/token relief. Token relief provides
relief from minor overpressure caused by nicks or dents on

the orice or by thermal expansion of gas in the downstream

line. Token relief also provides a token or signal, in the form
of odor, that an overpressure situation is occurring.

Types CS803 and CS823 Integral
True-Monitor Operation

Types CS803 and CS823 combine the operation of a
conventional two-regulator wide-open monitor set into one
body, see Figure 4. The Integral True-Monitor is installed on
the inlet side of the body and serves to control downstream
pressure in the situation where the Primary regulator can no
longer regulate downstream pressure.

3

CS800 Series

Table 2. PED Information

TYPE DESCRIPTION BODY MATERIAL PED CATEGORY FLUID GROUP

CS800, CS820 and CS850 Base regulator Ductile Iron and WCC Steel I

CS804, CS824 and CS854

European EN Reference Standards EN 334, EN 14382

Table 3. Body Sizes, Materials, End Connections and Maximum Cold Working Pressure Ratings

Regulator with

Slam-shut Module

Ductile Iron and WCC Steel IV

Groups 1 and 2 according to PED 97/23/EC,

st

and 2nd family gas according to EN 437 or

1

other gases (compressed air, nitrogen).

The gas must be non-corrosive, clean

(ltration on inlet side necessary) and dry.

(5)

TYPE

BODY

MATERIAL

END

CONNECTION

BODY SIZE

PART NUMBER

FACE-TO-FACE

DIMENSION

In. DN In. mm psig bar

BODY INLET

PRESSURE RATING

1-1/4 - - - - GE25859X012 6.12 155

CS800, CS805,
CS806, CS820,

CS825, CS826

and CS850

NPT

Gray Cast Iron

CL125 FF

Gray Cast Iron NPT 2

NPT

1-1/2 - - - - GE26296X012 6.12 155

(1)

2

- - - - GE26300X012 6.12 155

2 - - - - ERAA02462A0 7.5 191

2 50 GE26301X012 7.5 191

2 50 GE26303X012 10 254

(2)

- - - - ERAA02437A0 6.12 155 175 12.1

(4)

1-1/4

- - - - GE26306X012 6.12 155

1-1/2 - - - - ERAA02453A1 6.12 155

175 12.1

2 - - - - ERAA02437A1 6.12 155

250 17.2

232 16

290 20

(3)

, CS820

CS800

(3)

CS850

, CS803,

CS823, CS804,

CS824 and CS854

(3)

,

Ductile Iron

WCC Steel

Rp 2 - - - - ERAA02715A1 6.12 155

(4)

CL125 FF /

CL150 FF

2 50 GE48292X012 7.5

2 50 ERAA02711A1 10 254

2 50 ERAA02718A1 10.5 267

PN 10/16

NPT

2 50 GE48296X012 7.5

2 50 ERAA02719A1 10 254

(4)

1-1/4

- - - - GE26306X022 6.12 155

1-1/2 - - - - ERAA02453A2 6.12 155

(4)

2 - - - - ERAA02437A2 6.12 155

Rp 2 - - - - ERAA02715A2 6.12 155

191

191

(4)

(4)

CL150 RF 2 50 ERAA02720A2 10 254

PN 10/16 2 50 ERAA02719A2 10 254 232 16

1. Standard on Types CS800, CS820 and CS850.

2. Standard on Types CS803, CS804, CS823, CS824 and CS854.

3. If a ductile iron or steel body material is selected without an Integral True-Monitor™ or slam-shut Overpressure Protection (OPP) device, the port located at the bottom of the body will
receive an aluminum plug.

4. Not available on Types CS804, CS824 and CS854.

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

Table 4. Inlet Pressure Ratings and Flow and Sizing Coefcients

MAXIMUM OPERATING INLET PRESSURE

ORIFICE SIZE

TO OBTAIN OPTIMUM PERFORMANCE

psig Setpoints In. w.c. Setpoints

In. mm psig bar psig bar psig bar C

1/4

(1)

6.4

(1)

125 8.6 125 8.6

3/8 9.5 125 8.6 125 8.6 110 3.8 29.5 0.55 0.90

1/2 13 100 6.9 100 6.9 210 7.2 29.5 0.55 0.93

5/8 16 80 6.5 60 4.1 320 10.1 31.8 0.64 0.88

3/4 19 80 6.5 60 4.1 450 13.3 34 0.73 0.84

7/8 22 60 4.1 50 3.4 600 16.7 36 0.82 0.81

(1)

1

(1)(2)

1-3/8

1. Not available on the Types CS805, CS806, CS825 and CS826.

2. Not available on the Types CS803 and CS823.

(1)

25

(1)(2)

35

30 2.1 25 1.7 765 20.1 38.1 0.92 0.77

15 1.0 15 1.0 1125 29.8 37.7 0.90 0.76

4

MAXIMUM

EMERGENCY INLET

PRESSURE

175 12.1

WIDE-OPEN FLOW

COEFFICIENTS

g

C

v

C

IEC SIZING COEFFICIENTS

1

X

50 2.1 24.6 0.38

T

F

L

0.89

F

0.99

D

CS800 Series

Table 5. Outlet Pressure Ranges

TYPE

OUTLET PRESSURE RANGE

In. w.c. mbar In. mm In. mm

3.5 to 6

(1)

9 to 15

(1)

COLOR CODE PART NUMBER

Red GE30337X012 0.15 3.8 6.8 173

5.5 to 8.5 13 to 21 Black GE30338X012 0.17 4.3 6.8 173

CS800, CS803,
CS804, CS805

and CS806

5.5 to 8.5 13 to 21

8 to 12 20 to 30 Purple GE30339X012 0.17 4.3 7.4 188

Brown [Use with Low

Inlet (LIN) Option]

GE49043X012 0.16 4.1 8.3 211

10 to 16 25 to 40 White GE30340X012 0.18 4.6 7.4 188

14 to 30 35 to 75 Dark Green GE30341X012 0.20 5.2 7.5 191

CS820, CS823,
CS824, CS825

and CS826

CS850 and

CS854

1. In order to achieve the complete spring range listed, in some applications it may be required to re-orient the actuator/spring case to point downward to utilize the weight of the

internal components.

1 to 2.5 psig 69 to 170 Dark Blue GE30342X012 0.25 6.4 7.5 191

1.5 to 3.5 psig 100 to 241 Orange GE46922X012 0.26 6.6 7.1 180

2.5 to 5.5 psig 170 to 380 Yellow GE30343X012 0.29 7.5 6.7 170

5 to 10 psig 345 to 690

Green with

White Stripe

GE30344X012 0.39 9.9 7.6 192

Table 6. Approximate Internal Relief Valve Start-to-Discharge Pressure above Setpoint

INTERNAL RELIEF AND

HIGH CAPACITY RELIEF

CONTROL

SPRING

SETPOINT SET RANGE

Start-to-Discharge Pressure

Range above Setpoint

In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar

GE30337X012 4 10 3.5 to 6 9 to 15 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35

GE30338X012 7 17 5.5 to 8.5 13 to 21 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35

GE49043X012

(LIN)

7 17 5.5 to 8.5 13 to 21 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35

GE30339X012 11 27 8 to 12 20 to 30 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35

GE30340X012 14 35 10 to 16 25 to 40 11 to 18 27 to 42 7 to 14 17 to 35 6 to 14 15 to 35

GE30341X012 1 psig 69 14 to 30 35 to 75

GE30342X012 2 psig 138

GE46922X012 3 psig 207

GE30343X012 5 psig 345

1. Low start-to-discharge option is only available on the main control spring ranges up to 10 to 16 in. w.c. / 25 to 40 mbar.

1 to

2.5 psig

1.5 to

3.5 psig

2.5 to

5.5 psig

70 to 170

100 to 240

170 to 380

7 in. w.c. to

1 psig

7 in. w.c. to

2 psig

7 in. w.c. to

2 psig

7 in. w.c. to

2.5 psig

17 to 69 - - - - - - - - 8 to 16 20 to 40

17 to 138 - - - - - - - -

17 to 138 - - - - - - - -

17 to 170 - - - - - - - - 1 to 2 psig 69 to 138

Table 7. Secondary Seat™ Protection Outlet Pressures

TYPES CS805 AND CS825 TYPES CS806 AND CS826

Secondary Seat

CONTROL SPRING SPRING RANGE SETPOINT

Color Part Number In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar

Black GE30338X012 5.5 to 8.5 13 to 21 7 17 11 27 12 30 25 62 23 57

Brown

GE49043X012 5.5 to 8.5 13 to 21 7 17 11 27 12 30 25 62 23 57

(LIN)

White GE30340X012 10 to 16 25 to 40 14 35 19 47 20 50 36 89 33 81

Dark

GE30341X012 14 to 30 35 to 75 1 psig 69 1.2 psig 83 1.3 psig 90 2.1 psig 0.14 bar 2 psig 0.14 bar

Green

Dark

GE30342X012

Blue

Yellow GE30343X012

1. Downstream pressure buildup with Secondary Seat xed bleed in operation and regulator relief valve relieving to atmosphere.

2. Outlet pressure values listed are at maximum operating inlet pressure rating per orice. See Table 4.

3. If the outlet pressure rises above setpoint exceeds 3 psig / 207 mbar, inspect internal parts and replace if damaged.

1 to

2.5 psig

2.5 to

5.5 psig

69 mbar to

0.17 bar

0.17 to

0.38 bar

2 psig 0.14 bar 2.6 psig 0.17 bar 2.6 psig 0.18 bar 3.8 psig 0.26 bar 3.7 psig 0.26 bar

5 psig 0.34 bar 6.3 psig 0.43 bar 6.3 psig 0.43 bar 7.4 psig 0.51 bar 8.2 psig 0.56 bar

Shut-off Pressure

Orice Size, In. / mm Orice Size, In. / mm

3/8 / 9.5 5/8 / 16 3/8 / 9.5 5/8 / 16

SPRING WIRE DIAMETER SPRING FREE LENGTH

TOKEN RELIEF

Low Start-to-Discharge

Start-to-Discharge Pressure

Option

(1)

Start-to-Discharge Pressure

Range above Setpoint

Range above Setpoint

7 in. w.c. to

1 psig

0.5 to

1.5 psig

(2)

Downstream Build-up

Pressure

17 to 69

35 to 100

(1)(2)(3)

5

CS800 Series

Table 8. Primary Regulator and Integral True-Monitor™ Outlet Pressure Ranges without Token Relief

PRIMARY REGULATOR INTEGRAL TRUE-MONITOR

Type

CS803IN

and

CS803EN

CS823IN

and

CS823EN

Typical Setpoint

In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar

4 10 GE30337X012 3.5 to 6 9 to 15 Red

7 17 GE30338X012 5.5 to 8.5 13 to 21 Black

7 17 GE49043X012 5.5 to 8.5 13 to 21

11 27 GE30339X012 8 to 12 20 to 30 Purple

14 35 GE30340X012 10 to 16 25 to 40 White

1 psig 69 GE30341X012

2 psig 138 GE30342X012 1 to 2.5 psig

3 psig 207 GE46922X012

5 psig 345 GE30343X012

Spring Part

Number

Spring Range

14 to

30

1.5 to

3.5 psig

2.5 to

5.5 psig

35 to 75

69 to

170

100 to

241

170 to

380

Spring

Color

Brown

(LIN)

Dark

Green

Dark

Blue

Orange

Yellow

Setpoint

14 35 GE30189X012 12 to 21 30 to 52 Blue

21 52 GE30196X012 18 to 30 45 to 75 Green

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

14 35 GE30189X012 12 to 21 30 to 52 Blue

21 52 GE30196X012 18 to 30 45 to 75 Green

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

14 35 GE30189X012 12 to 21 30 to 52 Blue

21 52 GE30196X012 18 to 30 45 to 75 Green

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

21 52 GE30196X012 18 to 30 45 to 75 Green

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

1.5 psig 103 GE30190X012

21 52 GE30196X012 18 to 30 45 to 75 Green

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

1.5 psig 103 GE30190X012

1.5 psig 103 GE30190X012

2 psig 138 GE30190X012

3.5 psig 241 GE35081X012

2.5 psig 172 GE30190X012

3 psig 207 GE35081X012

5 psig 345 GE30192X012

3.5 241 GE35081X012

4 276 GE30192X012

6 414 GE33121X012 4 to 7.5

6 414 GE33121X012 4 to 7.5

7 483 GE33121X012 4 to 7.5

7.5 517 GE33121X012 4 to 7.5

Spring Part

Number

Spring Range

1.4 to

2.9 psig

1.4 to

2.9 psig

1.4 to

2.9 psig

1.4 to

2.9 psig

2.6 to

3.7 psig

1.4 to

2.9 psig

2.6 to

3.7 psig

3.6 to
6 psig

2.6 to

3.7 psig

3.6 to
6 psig

Spring

Color

97 to 200 Black

97 to 200 Black

97 to 200 Black

97 to 200 Black

179 to

255

97 to 200 Black

179 to

255

248 to

414

179 to

255

248 to

414

276 to

517

276 to

517

276 to

517

276 to

517

Purple

Purple

Dark Blue

Purple

Dark Blue

Red

Red

Red

Red

6

Type

CS803IT,
CS803IL,

CS803ET and

CS803EL

CS823IT,
CS823IL,

CS823ET and

CS823EL

CS800 Series

Table 9. Primary Regulator and Integral True-Monitor™ Outlet Pressure Ranges with Token Relief

PRIMARY REGULATOR INTEGRAL TRUE-MONITOR

Setpoint

In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar

4 10 GE30337X012 3.5 to 6 9 to 15 Red

7 17 GE30338X012 5.5 to 8.5 13 to 21 Black

7 17 GE49043X012 5.5 to 8.5 13 to 21

11 27 GE30339X012 8 to 12 20 to 30 Purple

14 35 GE30340X012 10 to 16 25 to 40 White

1 psig 69 GE30341X012 14 to 30 35 to 75

2 psig 138 GE30342X012 1 to 2.5 69 to 170

3 psig 207 GE46922X012 1.5 to 3.5 100 to 241 Orange

5 psig 345 GE30343X012 2.5 to 5.5 170 to 380 Yellow

Spring Part

Number

Spring Pressure

Range

Spring

Color

Brown

(LIN)

Dark

Green

Dark
Blue

Setpoint

21 52 GE30196X012 18 to 30 45 to 75 Green

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

21 52 GE30196X012 18 to 30 45 to 75 Green

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

21 52 GE30196X012 18 to 30 45 to 75 Green

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

1.5 psig 103 GE30190X012 1.4 to 2.9 psig 97 to 200 Black

1 psig 69 GE30225X012 26 to 40 65 to 99 Orange

1.5 psig 103 GE30190X012 1.4 to 2.9 psig 97 to 200 Black

2 psig 138 GE30190X012 1.4 to 2.9 psig 97 to 200 Black

3 psig 207 GE35081X012 2.6 to 3.7 psig 179 to 255 Purple

3 psig 207 GE35081X012 2.6 to 3.7 psig 179 to 255 Purple

4 psig 276 GE30192X012 3.6 to 6 psig 248 to 414 Dark Blue

5 psig 345 GE30192X012 3.6 to 6 psig 248 to 414 Dark Blue

6 psig 414 GE33121X012 5.1 to 7.5 psig 352 to 517 Red

7 psig 483 GE33121X012 5.1 to 7.5 psig 352 to 517 Red

7.5 psig 517 GE33121X012 5.1 to 7.5 psig 352 to 517 Red

Spring Part

Number

Spring Pressure Range

Spring

Color

Table 10. Regulator and Slam-Shut Overpressure Shutoff (OPSO) Pressure Ranges

REGULATOR

Type

CS804

CS824

CS854 7 psig 483 5 to 10 psig 345 to 690 9 psig 621

1. For units equipped with Token Relief, if Non-Factory Slam-shut OPSO setpoints are specied, they must be higher than the Token Relief Start-to-Discharge values provided in Table 6.

2. If Non-Factory OPSO setpoints are specied, the allowable OPSO setpoint cannot exceed the maximum of 3 psig / 207 mbar above the regulator setpoint in order to ensure no internal

parts damage from overpressure.

Factory Setpoint Spring Range Factory Setpoint

In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar

4 10 3.5 to 6 9 to 15 19 47

7 17 5.5 to 8.5 14 to 21 22 55

7 (optional) 17 (optional) 5.5 to 8.5 14 to 21

11 27 8 to 12 20 to 30

14 35 10 to 16 25 to 40 30 75 24 to 78 60 to 190 GF02170X012 / Orange

14 (optional) 35 (optional) 10 to 16 25 to 40 2 psig 138

1 psig 69 14 to 30 35 to 75 2 psig 138

2 psig 138 1 to 2.5 psig 69 to 170 3.5 psig 241

3 psig 207

5 psig 345

1.5 to

3.5 psig

2.5 to

5.5 psig

100 to 241 5 psig 345

170 to 380 7 psig 483

25 62 16 to 44 40 to 110 GF02169X012 / Red

SLAM-SHUT DEVICE

Over Pressure Shut-off (OPSO)

(1)

Spring Range

12 to 25 30 to 60 GF02168X012 / Brown

1.4 to

4.1 psig

2 to 7.3 psig 138 to 503 GF02172X012 / Green

3.2 to

8.5 psig

5.8 to

13 psig

(2)

97 to 283 GF02171X012 / Pink

221 to 586 GF02173X012 / Silver

400 to 896 GF04353X012 / Yellow

Spring

Part Number

and Color

7

CS800 Series

Table 11. Regulator and Slam-Shut Underpressure Shutoff (UPSO) Pressure and Overpressure Shutoff (OPSO) Ranges

REGULATOR

FACTORY

TYPE

CS804

CS824

CS854 7 psig 483

1. If Non-Factory UPSO setpoints are specied, a minimum differential of 4 in. w.c. / 10 mbar between UPSO setpoint and regulator setpoint must be maintained in order to ensure a

secure latch of the Slam-Shut.

2. For units equipped with Token Relief, if Non-Factory Slam-shut OPSO setpoints are specied, they must be higher than the Token Relief Start-to-Discharge values provided in Table 6.

3. If Non-Factory OPSO setpoints are specied, the allowable OPSO setpoint cannot exceed the maximum of 3 psig / 207 mbar above the regulator setpoint in order to ensure no internal

parts damage from overpressure.

SETPOINT

In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar In. w.c. mbar

7 17 5.5 to 8.5

11 27 8 to 12

14 35 10 to 16

1 psig 69 14 to 30

2 psig 138

3 psig 207

5 psig 345

SPRING

RANGE

1 to

2.5 psig

1.5 to

3.5 psig

2.5 to

5.5 psig

5 to

10 psig

14 to

21

20 to

30

25 to

40

35 to

75

69 to

170

100 to

241

170 to

380

345 to

690

0.5 psig 35

1.75 psig 121

3.5 psig 241

Under Pressure Shut-off (UPSO) Over Pressure Shut-off (OPSO)

FACTORY

SETPOINT

3 7

6 15 25 62

9 22 30 75

1 psig 69

3 psig 207 7 psig 483

SPRING RANGE

(1)

2 to 12 5 to 30

0.36 to

2.3 psig

0.36 to

2.3 psig

1.5 to

7.3 psig

1.5 to

7.3 psig

25 to

160

25 to

160

100 to

500

100 to

500

SLAM-SHUT DEVICE

SPRING PART
NUMBER AND

COLOR

T14168T0012 /

White

T14170T0012 /

Silver

T14170T0012 /

Silver

FA142869X12 /

Orange Stripe

FA142869X12 /

Orange Stripe

FACTORY

SETPOINT

22 55

2 psig 138

3.5 psig 241

5 psig 345

9 psig 621

(2)

SPRING RANGE

OVER UPSO

SETPOINT

17 to 28 42 to 69

1.3 to

3.1 psig

1.3 to

3.1 psig

2.7 to

5.5 psig

2.7 to

5.5 psig

(3)

90 to

214

90 to

214

186 to

379

186 to

379

SPRING PART

NUMBER AND

COLOR

GF02168X012 /

Brown

GF02170X012 /

Orange

GF02170X012 /

Orange

GF02171X012 /

Pink

GF02171X012 /

Pink

During normal operation the True Monitor™ is in a wide­open state as its setpoint is set higher than the primary
regulator. See Tables 8 and 9 for guidance regarding the
setpoints of the regulator and associated Integral Monitor
sets. If the downstream pressure should rise to the setpoint
of the True Monitor due to loss of pressure control by the
primary regulator, the monitor will assume control and

regulate ow to the downstream system. If a Token relief is

present, the token relief will relieve a small amount of gas to
the atmosphere as an indication that the Integral Monitor is
controlling the downstream pressure.

Either internal or external downstream pressure registration
is available. External pressure registration requires a

downstream sensing line. See the Type TM600 Integral
True-Monitor Instruction Manual (D103126X012) for
additional details of operation.

Types CS804, CS824 and CS854
Slam-Shut Operation

The Type VSX8 Slam-shut module on the CS804 Series
regulators is a fast acting shutoff device that provides
overpressure (OPSO) or overpressure and underpressure

(OPSO/UPSO) protection by completely shutting off the ow

of gas to the downstream system. See Tables 10 and 11
for guidance regarding the typical setpoint of the regulator

and associated OPSO and UPSO sets. The Type VSX8’s

actions are independent of the CS804 Series regulator and
of variations to the inlet pressure. The Type VSX8 provides

the option of internal or external downstream pressure
registration. External registration requires a downstream

sensing line. See Figure 11 for guidance regarding
installation of the downstream control line.

The Type VSX8 shutoff disk is normally in the open (reset)
position, see Figure 5. If the downstream pressure below
the slam-shut diaphragm increases (or decreases) until
it reaches the slam-shut setpoint, this diaphragm moves
upward (or downward) to release the trip mechanism which
allows the spring force on the stem to push the disk against

the seat, shutting off all gas ow. To reset the slam-shut after

gas has been shutoff; refer to Type VSX8 Instruction Manual
(D103127X012) for additional details.

WARNING

!

In order for the Underpressure Shutoff
(UPSO) of any slam-shut to be triggered,
the downstream pipe pressure must drop
below the UPSO setpoint. In the case of a
downstream line break, numerous factors
can prevent the downstream pipe pressure
from decreasing below the slam-shut UPSO
setpoint. These factors include the distance
of pipe to the break, the diameter of the
pipe, size of the break and the number of
restrictions, such as valves, elbows and
bends, downstream of the regulator and/
or slam-shut device. Due to these factors
additional protections should be installed to

stop ow in the event of a line break.

8

CS800 Series

Type CS800EN Regulator

M1086

January 2008

Type CS800EN

INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE

Type CS800EN Regulator

M1086

January 2008

Type CS800EN

INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE

M1070

INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE

DISK

CONTROL SPRING

SEAT/ORIFICE

ADJUSTING SCREW

VALVE STEM

PUSHER POST ASSEMBLY

LEVER

RELIEF VALVE STEM

RELIEF VALVE SPRING

Figure 2. Type CS800IR Internally Registered Regulator with Internal Relief Operational Schematic

DIAPHRAGM

ADJUSTING SCREW

CONTROL SPRING

DISK

VALVE STEM

SEAT/ORIFICE

M1071

INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE

Figure 3. Type CS800IQ Internally Registered Regulator with High Capacity Relief Operational Schematic

LEVER

RELIEF VALVE SPRING

PUSHER POST ASSEMBLY

RELIEF VALVE STEM

DIAPHRAGM

9

CS800 Series

If the slam-shut device trips due to a lever
disconnect failure of the main regulator, it is
recommended that you check downstream
equipment for damage prior to re-setting
the slam-shut.

Types CS805 and CS825 with
Secondary Seat™ Protection

CAUTION

Types CS805 and CS825 regulators do not
have any means to alert when the Secondary
Seat operates at lockup. Therefore, it
is recommended that Internal relief or
high-capacity relief are also selected or
the addition of some other method of
overpressure protection be added in the
downstream system as discussed in the
Overpressure Protection section.

Refer to Figure 6. The CS805 Series provides
Secondary Seat Protection. As downstream demand
decreases and downstream pressure rises to the regulator
pressure lock-up value, the regulator will lock up. If,
however, damage has occurred to the primary disk or

orice’s seating surface (seat) or debris has become lodged

between the primary disk and seat, the outlet pressure will
continue to rise. This additional pressure causes the disk to
apply additional force to the primary seat, which causes the
Secondary Seat to move toward the secondary disk/sealing

surface. If downstream demand decreases to zero, then the

Secondary Seat will contact the sealing surface to provide

lockup. Refer to Table 7 for approximate lock-up values

provided by the Secondary Seat.

Types CS806 and CS826 Secondary Seat
Protection with Bleed

When the Secondary Seat is providing lockup, the
CS806 Series provides small bleed to the downstream
system as an indication that the Secondary Seat is providing
lockup. In the event that the primary seat and disk cannot
provide lockup, the Secondary Seat will move into contact
with a metal disk with a small drilled hole. This metal-to­metal interface and bleed hole will allow a small amount of
gas to bleed downstream thereby increasing outlet pressure
until the Internal relief valve begins to discharge gas to the
atmosphere. The odor of this discharged gas provides an
indication that the regulator is relying on the Secondary Seat for
overpressure protection. See Table 7 for the Downstream
Pressure Buildup of the Internal relief acting in conjunction
with the Type CS806 Secondary Seat Assembly.

Secondary Seat Protection Limitations

CAUTION

Overpresssure conditions can occur in the
downstream piping when the Secondary Seat
Protection is installed. The Secondary Seat

Protection serves only as a backup to the
primary seat for lockup. Refer to the sections
on Overpressure Protection and Maintenance.

Secondary Seat Protection does not provide additional
overpressure protection in the event the secondary seat or disk
is damaged by debris or contamination in the pipeline or from
conditions that would cause the regulator to go wide-open.

Installation and Overpressure Protection

WARNING

!

Personal injury or system damage may
result if this regulator is installed, without
appropriate overpressure protection, where
service conditions could exceed the limits
given on the regulator nameplate.

Regulator installations should be adequately
protected from physical damage.

All vents should be kept open to permit

free ow of gas to the atmosphere. Protect

openings against entrance of rain, snow,
insects or any other foreign material that
may plug the vent or vent line. For outdoor
installations, point the spring case vent
downward to allow condensate to drain
(see Figure 8). This minimizes the possibility
of freezing and of water or other foreign
materials 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 to the outdoors. See Vent Line
Installation section for the recommended
venting practices.

CAUTION

The CS800 Series regulators have an
outlet pressure rating lower than their inlet
pressure rating. If actual inlet pressure can
exceed the outlet pressure rating, outlet
overpressure protection is necessary.
However, overpressuring any portion of
the regulators beyond the limits in the

Specications section and referenced tables

may cause leakage, damage to regulator
parts or personal injury due to bursting of
pressure-containing parts.

Some type of external overpressure
protection should be provided if inlet
pressure will be high enough to damage
downstream equipment. Common methods
of external overpressure protection include
relief valves, monitoring regulators, shut-off
devices and series regulation.

10