Swagelok KHP Series Specifiche tecniche

Kit Contents

KHP Series Regulators

Maintenance Instructions

Symbols

Lightly lubricate

Discard

Piston seal

Seat

Body seal

Seat retainer

Piston seal backup ring Self-vent seat retainer

Poppet damper

Self-vent poppet spring

Lubricant

MS-LT-WL8

Poppet springPoppet

Self-vent poppet

Self-vent seat

Note: Kits for regulators with a self-vent contain a

self-vent poppet and self-vent poppet spring.

Inlet Filter

Tools Required

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

Tool Size Component

Vise

-Body

Socket

5/8 in. or 16 mm Seat retainer

Crow’s foot

3/4 in. or 19 mm Vent assembly retainer nut

1 5/8 in. or 41 mm Body cap

Open-ended wrench

3/4 in. or 19 mm Vent assembly retainer nut

1 5/8 in. or 41 mm Body cap

Torque wrench

Capable of

129 ft·lb (175 N·m, 17.8 m·kg)

Seat retainer,

Body cap

Hex key

1/8 in. or 3 mm Vent screw

Needle-nose pliers

-Knob handle retainer

Swagelok Tools Available

Vent retainer tool

-Poppet retainer

Piston assembly bar

- Piston

Filter insertion tool

—Inlet filter

Filter pick tool

—Inlet filter

Exploded View

Note: Regulators with no self-vent option do not contain a vent screw, vent screw spring, vent rod,

self-vent poppet, and self-vent poppet spring.

Seat Assembly

Self-Vent Assembly

Stem Assembly

Cover

Handle retainer

Handle

Seat retainer

Seat

Stem

Upper spring

button

Piston seal backup ring

Piston seal

Piston

Poppet damper

Poppet spring

Poppet

Upper

spring

button

set

screw

Stem nuts

Lower spring

button

Range spring

Thrust roller

bearing

Piston guide

Body cap

Vent screw

Vent screw spring

Vent rod

Self-vent poppet

Self-vent poppet spring

Self-vent seat retainer

Self-vent seat

Body seal

Body

(No orice in non-vent

sensing mechanism)

Inlet lter

4. Remove the body cap from the body.

Note: The vent rod, range spring, and lower spring

button (self-vent only) may fall from the body cap. Set

aside for later use.

5. Remove the piston guide from the body by pinching the

piston top with your ngers and gently rocking it.

6. Lightly grip the piston guide in the vise and loosen the

self-vent seat retainer from the piston guide using the

piston assembly bar and vent retainer tool. The piston

assembly bar must be held still.

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. Remove the

cover, handle retainer and the handle from the body cap.

Note: Use needle-nose pliers to remove the handle retainer.

3. Loosen the body cap.

Body cap

Handle

Handle retainer

Cover

Body cap

Piston guide

Body

Piston

Vent retainer

tool

Piston assembly bar

Piston guide

Cap assembly

Range spring

Lower spring

button

Vent rod

Body

7. For regulators with a self vent, remove the self-vent

poppet spring and the self-vent poppet. For all

regulators, remove the self-vent seat from the piston

guide.

8. Push the piston out of the piston guide.

9. Remove the piston seal and the backup ring from the

piston guide, and the body seal from the body.

10. Loosen the seat assembly.

NOTICE

Be careful not to scratch the inside of the body.

Leakage could result.

11. Invert the body and remove the seat retainer. Then remove

the poppet damper, the poppet spring, poppet and the

seat from the seat retainer.

12. Remove the inlet filter from the inlet port (marked ‘HP’)

using the filter pick tool.

NOTICE

Be careful not to scratch the sides of the inlet

port. Leakage could result.

Piston guide

Piston

Poppet damper

Poppet

Poppet spring

Seat retainer

Seat

Piston Guide

Backup ring

Piston seal

Body

Body seal

Self-vent seat

Self-vent poppet

Self-vent poppet spring

Piston guide

(No orice in non-vent assemblies)

Piston

HP Inlet port

Filter pick tool

Discard

inlet lter

17. Insert the inlet filter into the inlet port (marked ‘HP’) using

the filter insertion tool.

NOTICE

Do not insert the inlet ﬁlter with a sharp tool.

Damage to the ﬁlter could result.

18. Insert backup ring followed by the piston seal into the

piston guide. Insert the body seal into the body.

19. Invert the piston and insert the self-vent seat with

groove facing away from the piston. Insert the self-vent

poppet and the self-vent poppet spring into the piston.

Finger-tighten the self-vent seat retainer into the piston

using the vent retainer tool.

Reassembly

NOTICE

Ensure all parts and tools are free of debris or

damage.

13. Insert the seat into the seat retainer with the groove away

from the seat retainer.

14. Place the poppet through the seat. Place the poppet

spring and the poppet damper onto the exposed end of

the poppet.

15. Invert the body and seat assembly and thread the seat

assembly into the body.

16. Tighten the seat assembly to:

for non-metallic seat: 13 ft·lb (17.5 N·m, 1.8 m·kg)

for metallic seat: 26 ft·lb (35.0 N·m, 3.7 m·kg)

Body seal

Body

Piston guide

Back up ring

Piston seal

Seat assembly

Body

Poppet

Poppet spring

Poppet damper

Seat

Seat retainer

Groove

Filter insertion tool

Inlet lter

Inlet

Body

Self-vent seat

Piston

Self-vent poppet

Self-vent poppet spring

Vent retainer tool

Self-vent seat retainer

(Self-vent only)

(No orice in

non-vent assemblies)

(Self-vent only)

Groove

20. Insert the piston into the piston guide.Lightly grip the

piston guide in the vise and tighten the self-vent seat

retainer to 7 ft·lb (10 N·m) using the piston assembly bar

and vent retainer tool.

NOTICE

Do not force the piston into the piston guide.

Damage to the seals could result.

21. Insert the piston guide into the body. Lightly press down

on the piston guide until it is fully seated

NOTICE

Ensure the piston seal is lubricated and do not

pinch the piston seal when inserting it into the

body. Damage could result.

22. Place the range spring and the lower spring button into

the body cap. Thread the body cap nger-tight into the

body in the inverted position.

23. Tighten the body cap to 129 ft·lb (175 N·m, 17.9 m·kg).

24. Place the handle and the handle retainer on the body

cap.

Body cap

Piston guide

Body

Body cap

Body

Lower

spring

button

Range

spring

Handle

Handle retainer

Body cap

Piston assembly bar

Vent retainer

tool

28. Place the cover on the handle.

Cover

Handle

Swagelok — TM Swagelok Company

October 2015, R3

MS-CRD- 0140

For additional information, see www.swagelok.com.

25. For regulators with a self-vent only, loosen the vent screw

and insert the vent rod. Thread the vent screw into the

cap assembly.

26. Test the regulator for proper operation.

Note: For non-vent assemblies replace cover according to

Step 28.

27. For regulators with a self-vent only, apply 50 to 100 psig

(3.4 to 6.8 bar) to the LP port, tighten the vent screw until

leakage is heard, and then loosen by one-half turn.

Vent screw

Vent rod

Body cap

Stem

Indice

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