Swagelok KPP Series Technische Daten

Kit Contents

KPP Series Regulators

Maintenance Instructions

Seat

Inlet lter

Piston seal and spring

Lubricant

MS-LT-WL8

Poppet spring

Body seal and spring

Poppet

Symbols

Lightly lubricate

Discard

Seat retainer

Poppet damper

Piston seal retainer

Tools Required

Tool Size Component

Vise

- Body

Socket

11/16 in. or 17 mm Stem nut,

Antitamper nut

5/8 in. or 16 mm Seat retainer

Crow’s Foot

2 in. or 50 mm Cap ring

Open-ended wrench

2 in. or 50 mm Cap ring

Torque wrench

Capable of

100 ft·lb (135 N·m, 13.8 m·kg)

Seat retainer,

Cap ring

Swagelok Tools Available

Piston seal insertion tool

-Piston seal and spring

Body seal insertion tool

-Body seal and spring

Filter insertion tool

-Inlet filter

Filter pick tool

-Inlet filter

Note: See Pressure Regulators, MS-02-230, for tool ordering information.

Exploded View

Note: Plated steel spring buttons shown.

Assemblies with the 316 SS spring buttons do not include the spring stabilizer.

Cover

Stem nut

Handle

Body cap

Cap ring

Stem

Body seal and

spring

Body

Upper spring button

Range spring

Lower spring button

Spring stabilizer

Seat

Seat retainer

Poppet

Poppet spring

Poppet damper

Piston seal and spring

Piston seal retainer

Piston

Inlet lter

Piston guide

Seat Assembly

6. Push the piston out of the piston guide.

7. Remove the piston seal and spring and the piston seal

retainer from the piston guide, and the body seal and

spring from the body.

NOTICE

Do not damage the inner diameter of the piston

guide. Leakage could result.

8. Loosen and remove the seat assembly. Discard the seat

and seat retainer.

NOTICE

Be careful not to scratch the inside of the body.

Leakage could result.

WARNING

Before removing a regulator from the system for

service, you must

•  depressurizesystem

•  purgethesystemtoremoveanyresidual

system media left in the regulator.

Disassembly

1. Place the regulator in a vise.

2. Turn the handle counterclockwise until it stops.

Note: If using an antitamper nut, remove it from the body.

Then turn the stem counter clockwise until it stops.

3. Loosen the cap ring.

4. Remove the cap assembly and handle as one piece and

set aside for later use.

Note: The range spring and the lower spring button may

fall from the cap assembly. Set aside for later use.

5. Lightly grip the piston guide in the vise and remove the

body.

NOTICE

Twist the body gently to avoid body seal and

spring damage. Leakage could result.

Body

Piston guide

Piston seal

and spring

Piston guide

Body

Piston seal

retainer

Body seal

and spring

Cap ring

Range spring

Cap assembly

Lower spring

button

Body

Seat retainer

Seat

Body

Piston guide

Piston

Handle

9. Invert the body and remove the poppet, the poppet

spring, and the poppet damper.

10. Remove the inlet ﬁlter from the inlet (marked ‘HP’) of the

body using the ﬁlter pick tool. Discard old lter.

NOTICE

Be careful not to scratch the sides of the inlet

port. Leakage could result.

Reassembly

NOTICE

Ensure all parts and tools are free of debris or

damage.

11. Insert the seat into the seat retainer with the groove

facing away from the seat retainer.

12. Place the poppet through the seat. Place the poppet

spring and the poppet damper onto the exposed end of

the poppet.

13. Invert the body and thread the seat assembly into the

body.

Poppet damper

Poppet

Poppet spring

Seat assembly

Body

Poppet damper

Seat

Poppet damper

Poppet spring

Poppet

Seat

Seat retainer

Groove

Filter pick tool

Inlet

Discard

inlet filter.

14. Tighten the seat assembly to 13 lb·ft (17.5 N·m, 1.8 m·kg).

15. Insert the bottom of the piston seal insertion tool into

the piston guide. Insert the piston seal and spring into

the piston guide and use the top part of the piston seal

insertion tool to press the seal into place (17A). Then insert

the piston seal retainer, pressing it into place using the top

part of the piston seal insertion tool (17B).

Note: The open end of the piston seal and spring should

be facing up. The chamfer of the piston seal retainer

should be placed against the piston seal and spring.

16. Insert the bottom of the body seal insertion tool into the

body. Insert the body seal and spring and use the top part

of the body seal insertion tool to press the seal into place.

Note: The open end of the body seal and spring should be

facing down.

17. Push the piston into the piston guide.

18. Push the piston guide onto the body until it fully engages

with the body seal and spring.

19.

Insert the inlet filter in the inlet (marked ‘HP’) using the

filter insertion tool.

NOTICE

Do not insert the inlet ﬁlter with a sharp tool.

Damage to the ﬁlter could result.

20. Insert the lower spring button into the cap assembly with

the point towards the range spring if necessary.

Piston guide

Piston

Piston guide

Body

Body seal and spring

Piston

seal

insertion

tool

Open end up

Piston seal

and spring

17A

Chamfer facing

down

Piston seal

retainer

17B

Piston guide

Lower spring button

Range spring

Cap assembly

Open end down

Body seal

and spring

Body

Body seal

insertion tool

Body seal

insertion tool

Insertion tool

Inlet lter

Inlet

21. Invert and thread the body into the cap assembly.

22. Tighten the cap ring to 100 ft·lb (135 N·m, 13.8 m·kg).

23. Test the regulator for proper operation.

24. If using an antitamper nut, thread the antitamper nut onto

the stem after the set outlet pressure is reached. Tighten

the nut to 13.0 ft·lb (17.5 N·m, 1.8 m·kg).

Cap ring

Cap assembly

Body

Piston

Swagelok — TM Swagelok Company

October 2015, R2

MS-CRD-0138

For additional information, see www.swagelok.com.

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