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CS200 Series

9

fastens the lower spring seat (key 43) to the pusher 

post (key 51).  Unscrewing the screw retainer will 

separate the lower spring seat (key 43), diaphragm 

and diaphragm assembly (key 55), and pusher post 

(key 51).   

For Type CS200IR, CS205IR, and CS206IR (units 

with internal relief),

 press down on the upper spring 

retainer (key 42, Figure 6) using a 9/16-inch / 14 mm 

box-end wrench and remove the retaining ring (key 58).  

Slide the upper spring retainer (key 42), the relief 

spring (key 41), the lower spring seat (key 43) and the 

diaphragm assembly (key 55) off of the relief valve stem 

(key 44). 

6.  Reassemble regulator in the reverse order of the 

above steps.  

Disassembly to Replace Valve Disk 

and Orifice

1.  Remove the bolts (key 71, Figure 5) which hold the 

lower spring casing (key 9) to the body (key 70).  

Separate the lower spring casing from the body. 

2.  Check the body O-ring (key 21) for wear and replace 

as necessary.

3.  Examine the valve disk (key 36,

 

Figure 5) for nicks, 

cuts, and other damage.  Remove the disk by pulling 

and replace it with a new part if necessary.

4. 

  a.   If the seating edge of the Type CS200 orifice 

(key 25, Figure 7) is nicked or rough, remove the 

orifice from the body using a 7/8-inch / 22 mm 

socket wrench.

 

b.   If equipped with a Type CS205/206 

Secondary Seat™ orifice assembly, inspect the 

primary seating surface as well as the secondary 

seating surface and sealing surface.  If nicks or other 

damage are present, remove the orifice 

 

assembly from the body using a 7/8-inch / 22 mm 

socket wrench. 

 

 Apply anti-seize lubricant to the external threads of 

the new orifice and reassemble.  

 

Note

If the orifice is being replaced with a 

different size, change the nameplate  

to state the new size and maximum  

inlet pressure.   

5.  Reassemble the regulator in reverse order of the 

above steps.

Regulator Reassembly

It is recommended that a good quality pipe thread sealant 

be applied to pressure connections and fittings and a 

good quality lubricant be applied to all O-rings except 

when replacing key 19, as key 19 is a friction fit O-ring for 

Parts List

Key  Description 

Part Number

   

Spare Parts (Repair Parts Kit includes keys 21, 

 

36, 55, and 62)

 

  Type CS200 

RCS200X0012

  1 

Upper Case, Aluminum 

GE24555X012

  2  

Vent Screen, 18-8 Stainless steel  

T1121338982

  3  

Retaining Ring, Zinc-plated steel  

T1120925072

  4  

Stabilizer Guide, Stainless steel 

GE27061X012

  5  

Stabilizer, 1 inch / 25 mm 

GE27063X012

  6  

Spring, Stainless steel 

GE35010X012

  7  

Retainer Plate, Zinc-plated steel  

GE27024X012

  8  

Stabilizer Screw, Zinc-plated steel (3 required) 

GE29724X012

  9  

Lower Casing, Aluminum  

GE24289X012

  10  Lever, Steel  

GE27194X012

  11   Stem, Aluminum  

GE27439X012

  13 

Lever  Pin,  Stainless  steel 

T14397T0012         

  14    Lever  Screw,  Steel  (2  required) 

GE34243X012         

  15  Cap Screw, Steel (8 required) 

GE32059X012

  16   Nut, Steel (8 required) 

GE32060X012

  17   Union Ring, Aluminum 

GE26591X012 

  18   Snap Ring, Stainless steel  

T1120637022

  19*   O-ring, Nitrile (NBR)  

1K594906562

  20  Stem Guide, Aluminum  

GE31962X012

  21*    O-ring,  Nitrile  (NBR)   

GE45216X012         

  22*    Pipe  Plug,  Steel,  3/4  NPT   

GE34199X012         

  25*  Orifice Assembly  

 

  Type CS200 without Secondary Seat™  

 

  protection, Aluminum

 

  1/8 inch / 3.1 mm 

1A936709012

 

  3/16 inch / 4.7 mm 

00991209012

 

  1/4 inch / 6.4 mm 

0B042009012

 

  3/8 inch / 9.5 mm 

0B042209012

 

  1/2 inch / 13 mm 

1A928809012

 

  Type CS205 with Secondary Seat  

 

    protection, Brass/Nitrile (NBR)

 

  1/8 inch / 3.1 mm 

GE31991X012

 

  3/16 inch / 4.7 mm  

GE32008X012

 

  1/4 inch / 6.4 mm  

GE32010X012

 

  5/16 inch / 7.9 mm 

GE32012X012

 

  Type CS206 with Secondary Seat  

 

    protection and bleed, Brass/Nitrile (NBR)

 

  1/8 inch / 3.1 mm 

GE32007X012

 

  3/16 inch / 4.7 mm  

GE32009X012

 

  1/4 inch / 6.4 mm  

GE32011X012

 

  5/16 inch / 7.9 mm 

GE32014X012

*Recommended spare part.

holding the stem guide into the lower casing.  Also apply 

an anti-seize compound to the adjusting screw threads 

and other areas as needed.  Refer to Figures 5 through 7.

Parts Ordering

The type number, orifice size, spring range, and date of 

manufacture are stamped on the nameplate.  Always 

provide this information in any correspondence with 

your local Sales Office regarding replacement parts or 

technical assistance.
When ordering replacement parts, reference the key 

number of each needed part as found in the following 

parts list.  Separate kit containing all recommended spare 

parts is available.

Summary of Contents for FISHER CS200 Series

Page 1: ...r 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 Table of Contents Introduction 1 Specifications 3 Principle of Operation 4 Installation and Overpressure Protection 6 Startup 7 Adjustment 8 Shutdown 8 Maintenance 8 Parts Ordering 9 Parts List ...

Page 2: ...ly 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 WARNING Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion and or fire causing property damage and...

Page 3: ...ssure registration and Relieving diaphragm assembly Type CS205IN Type CS200IN with Secondary SeatTM 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 Se...

Page 4: ...scharge 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 ...

Page 5: ...into contact with a metal disk This metal to metal interface 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 5 for the Downstream Pressure Bu...

Page 6: ...fering 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 CAUTION The CS200 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...

Page 7: ...rpressure Protection If the regulator is used in conjunction with a Type 289H relief valve it should be installed as shown in Figure 4 The outside end of the vent line should be protected with a rainproof assembly The Type 289H is typically set 10 inches w c 25 mbar higher than the outlet pressure setting of the regulator up to 30 inches w c 75 mbar outlet pressure For pressure greater than this s...

Page 8: ...tion before being returned to service Only parts manufactured by Regulator Technologies should be used for repairing Fisher regulators Restart gas utilization equipment according to normal startup procedures Due to normal wear or damage that may occur from external sources this regulator should be inspected and maintained periodically The frequency of inspection and replacement of parts depends up...

Page 9: ...19 is a friction fit O ring for Parts List Key Description Part Number Spare Parts Repair Parts Kit includes keys 21 36 55 and 62 Type CS200 RCS200X0012 1 Upper Case Aluminum GE24555X012 2 Vent Screen 18 8 Stainless steel T1121338982 3 Retaining Ring Zinc plated steel T1120925072 4 Stabilizer Guide Stainless steel GE27061X012 5 Stabilizer 1 inch 25 mm GE27063X012 6 Spring Stainless steel GE35010X0...

Page 10: ...7 1 TO 10 N m TORQUE 35 TO 45 FOOT POUNDS 47 TO 61 N m L1 60 L2 62 38 55 22 10 14 18 13 36 11 S S 21 L2 L2 L2 L1 L1 65 100 96 4 6 70 2 1 15 3 71 17 16 9 5 7 19 20 72 L1 25 L2 27 95 8 42 51 L1 TORQUE 15 TO 30 INCH POUNDS 1 7 TO 3 4 N m TORQUE 15 TO 30 INCH POUNDS 1 7 TO 3 4 N m TORQUE 15 TO 30 INCH POUNDS 1 7 TO 3 4 N m TORQUE 10 TO 13 FOOT POUNDS 14 TO 18 N m TORQUE 63 TO 90 INCH POUNDS 7 1 TO 10 ...

Page 11: ...s must be selected such that they meet the temperature requirements NON RELIEF STANDARD INTERNAL RELIEF Figure 6 CS200 Series Diaphragm Assemblies ERAA03487 ERAA03487 36 25 27 TORQUE 12 TO 17 FOOT POUNDS 16 T0 23 N m L1 L2 36 25 27 TORQUE 35 TO 45 FOOT POUNDS 47 T0 61 N m L1 L2 54 54 53 53 51 57 56 NOTE DIRECTION OF RETAINER RING INSTALLATION 55A 55A A 55B 45 43 43 44 58 42 41 51 57 A 55B ...

Page 12: ...fic Shanghai 201206 China Tel 86 21 2892 9499 The distinctive swirl pattern cast into every actuator casing uniquely identifies the regulator as part of the Fisher brand Commercial Service Regulator family and assures you of the highest quality engineering performance and support traditionally associated with Fisher Tartarini and Francel regulators Visit www fishercommercialservice com to access i...

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