Swagelok KHF Series Technical specifications

Kit Contents
KHF Series Regulators
Maintenance Instructions
Symbols
Lightly lubricate
Discard
Diaphragm
Seat
Seat retainer
Inlet Filter
Poppet spring Poppet
Spring retainer
Lubricant
MS-LT-WL8
Poppet seal and spring
Poppet seal retainer

Tool Size Component
Vise
-Body
Socket
11/16 in. or 17 mm Antitamper nut
Crow’s Foot
3/4 in. or 19 mm Seat retainer spanner
Open-ended wrench
3/4 in. or 19 mm Seat retainer spanner
Torque wrench
Capable of
236 ft·lb (320 N·m, 32.7 m·kg) Cap ring spanner
Swagelok Tools Available
Large cap ring spanner
2 7/8 in. or 73 mm Cap ring
Seat retainer spanner
-Seat retainer
Poppet seal insertion tool
-Poppet seal and spring
Seal extraction tool
_Poppet seal and spring
Filter insertion tool
-Inlet filter
Filter pick tool
-Inlet filter
Tools Required
Note: See Pressure Regulators,
MS-02-230, for tool
ordering information.
2

Exploded View
3
Note: Plated steel spring buttons shown.
Assemblies with the 316 SS spring buttons do not include the spring stabilizer.
Stem
Spring button
Spring stabilizer
Range spring
Diaphragm
Stop plate
Cover
Stem nut
Body cap
Seat retainer
Seat
Poppet
Cap ring
Handle
Poppet spring
Inlet lter
Body
Poppet seal retainer
Poppet seal and spring
Spring retainer
Seat Assembly

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 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 may fall from the cap assembly
when lifted. Set aside for later use.
5. Remove the diaphragm and the stop plate from the body.
Set stop plate aside for later use.
NOTICE
Do not damage the diaphragm sealing surface on
the body. Leakage could result.
Cap ring
Handle Large cap ring spanner
4
4
Diaphragm
Stop plate
Body
6. Use the seat retainer spanner to loosen and remove the
seat assembly. Discard the seat retainer and the seat.
7. Invert the body and remove and discard the poppet, the
spring retainer, the poppet spring and the poppet seal
retainer.
8. Thread the seal extraction tool into the body and remove
the poppet seal and spring.
9. Remove the inlet lter from the inlet (marked ‘HP’) of the
body using the lter pick tool. Discard old lter.
NOTICE
Be careful not to scratch the sides of the inlet
port. Leakage could result.
Poppet
Spring retainer
Poppet seal
retainer
Poppet spring
Body
Seal extraction tool
Poppet seal and spring
Seat retainer
Seat
Body
Seat retainer spanner
Cap assembly
Range spring
HP
Inlet
Filter pick tool
Discard
inlet filter.

Reassembly
NOTICE
Ensure all parts and tools are free of debris or
damage.
10. Insert the inlet filter into the inlet (marked ‘HP’) of the body
using the filter insertion tool.
NOTICE
Do not insert the inlet lter with a sharp tool.
Damage to the lter could result.
11. Insert the poppet seal and spring into the body using the
poppet seal insertion tool with the open end of the poppet
seal and spring facing up.
12. Insert the seat with the groove facing up into the seat
retainer.
13. Place the poppet through the seat retainer. Then place the
spring retainer, the poppet spring and the poppet seal
retainer onto the exposed end of the poppet.
14. Invert the body and thread the seat assembly into the
body.
15. Tighten the seat assembly to 30 ft·lb (40 N·m, 4 m·kg).
NOTICE
Do not damage the diaphragm sealing face on the
body. Leakage could result.
16. Install the diaphragm on the body with the large
convolution facing towards the body.
17. Install the stop plate onto the diaphragm with the boss on
the stop plate facing away from the diaphragm.
Seat
Seat retainer
Groove
Seat assembly
Body
Filter insertion tool
Inlet lter
HP
Inlet
Spring retainer
Poppet spring
Poppet
Poppet seal retainer
Seat retainer
Stop plate
Diaphragm
Boss
5
Seat retainer spanner
Diaphragm
Body
Large convolution
Body
Poppet seal
and spring Poppet seal
insertion tool
Open end up

Swagelok — TM Swagelok Company
© 2010-2019 Swagelok Company
March 2019, RevC
MS-CRD-0137
For additional information, see www.swagelok.com.
18. Reinsert the range spring into the cap assembly.
19. Thread the cap assembly onto the body and tighten the
cap ring to 236 ft·lb (320 N·m, 32.7 m·kg).
20. Test the regulator for proper operation.
21. If using an antitamper nut, thread the antitamper nut onto
the stem after the set outlet pressure is reached. Tighten
the nut to 13 ft·lb (17.5 N·m, 1.8 m·kg).
Cap ring
Large cap ring spanner
Cap assembly
Range spring
6