Swagelok KHP Series Technische Daten
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.
2
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
3
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 orice 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
• depressurizesystem
• purgethesystemtoremoveanyresidual
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
4
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
5
Piston Guide
Backup ring
Piston seal
Body
Body seal
Self-vent seat
Self-vent poppet
Self-vent poppet spring
Piston guide
(No orice 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
6
Seat assembly
Body
Poppet
Poppet spring
Poppet damper
Seat
Seat retainer
Groove
Filter insertion tool
Inlet lter
HP
Inlet
Body
Self-vent seat
Piston
Self-vent poppet
Self-vent poppet spring
Vent retainer tool
Self-vent seat retainer
(Self-vent only)
(No orice in
non-vent assemblies)
(Self-vent only)
Groove
7
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
© 2010 — 2015 Swagelok Company
October 2015, R3
MS-CRD- 0140
For additional information, see www.swagelok.com.
8
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
LP
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