Swagelok KPB Series Specifiche tecniche

Poppet

Seat retainer seal

Body seal and spring

Seat retainer

Tool Size Component

Vise

— Body

Socket

5/8 in. or 16 mm Seat retainer

11/16 in. or 17 mm Stem nut

Open-ended wrench

13/16 in. or 21 mm Piston

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

Crow’s foot

2 in. or 50 mm Cap ring

Thread-locking fluid

—Poppet retainer

Tool Kit

Piston seal insertion tool

—Piston seal and spring

Body seal insertion tool

—Body seal and spring

Piston seal and spring Poppet spring

Piston seal retainer

Kit Contents

KPB Series Regulators

Maintenance Instructions

Tools Required

Symbols

Lightly

lubricate

Discard

NOTE: See Pressure Regulators,

MS-02-230, for tool kit

ordering information.

Lubricant

MS-LT-WL8

Seat support Seat

Exploded View

Cover

Stem nut

Knob handle

Body cap

Cap ring

Piston guide

Body seal and

spring

Body

Stem

Upper spring

button

Lower spring

button

Range spring

Spring stabilizer

Seat retainer

Seat

Seat support

Seat retainer seal

Poppet

Poppet spring

Piston

Poppet retainer

Piston seal and spring

Piston seal retainer

WARNING

Before removing a regulator from the system

for service, you must

• depressurizethe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 knob handle counterclockwise 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, which could result in leakage.

Body

Piston guide

Range spring

Lower spring

button

Cap assembly / handle

6. Push the piston assembly out of the piston guide.

7. With the piston assembly inverted, grip the poppet retainer

in the vise and remove the piston.

NOTICE

Protect the poppet retainer from scratches when

gripping it in the vise. Leakage could result.

8. Remove the poppet and the poppet spring from the

poppet retainer.

9. 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

Be careful not to scratch the inside of the piston guide

and the body. Leakage could result.

Piston guide

Piston assembly

Piston seal

and spring

Piston guide

Body

Piston seal

retainer

Body seal

and spring

Piston

Poppet

Poppet retainer

Poppet spring

Cap ring

Reassembly

NOTICE

Ensure all parts and tools are free of debris or

damage.

11. Insert the seat, the seat support and the seat retainer

seal into the seat retainer.

12. In the inverted position, thread the seat assembly into the

body.

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

14. Insert the poppet into the piston. Place the poppet spring

onto the exposed end of the poppet.

Seat assembly

Body

Seat retainer

seal

Seat support

Seat

Seat retainer

Groove

facing down

Groove

facing up

Poppet

Piston

Poppet spring

10. Loosen and remove the seat retainer assembly.

NOTICE

Be careful not to scratch the inside of the body.

Leakage could result.

Seat retainer

Seat

Seat support

Seat retainer seal

15. Thread the poppet retainer onto the piston.

16. Wrench-tighten the piston into the poppet retainer until it is

fully engaged.

Note: Clean off any excess thread-lock fluid from the piston

and poppet retainer.

NOTICE

Protect the poppet retainer from scratches when

gripping it in the vise. Leakage could result.

17. 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 and the chamfer of the piston seal

retainer should be placed against the piston seal and

spring.

18. Push the piston assembly into the piston guide.

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

body. Insert the body seal and spring into the body and

use the top part of the body seal insertion tool to press the

seal into place.

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

with the body seal and spring.

21. Insert the range spring into the cap and then the lower

spring button with the point towards the range spring.

Range spring

Lower spring

button

Piston guide

Body seal

and spring

Body

Poppet retainer

Piston

Thread -locking

fluid

Piston

seal

insertion

tool

Open

end up

Piston seal

and spring

17A

Chamfer

facing

down

Piston seal

retainer

17B

Piston guide

Open end

down

Body seal

and spring

Body

seal

insertion

tool

Body

seal

insertion

tool

Piston guide

Piston assembly

22. Thread the cap assembly / handle onto the body with the

lower spring button resting on the piston.

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

24. Test the regulator for proper operation.

Body Piston

Cap assembly / handle

For additional information, see www.swagelok.com.

Swagelok — TM Swagelok Company

October 2015, R1

MS-CRD-0132

Cap ring

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