Swagelok KLF Series User manual

Kit Contents
KLF Series Regulators
Maintenance Instructions
Symbols
Lightly lubricate
Discard
NOTE: See Pressure Regulators, MS-02-230, for tool ordering information.
Diaphragm
Seat
Poppet
Inlet lter
Poppet spring
Seat retainer
Lubricant
MS-LT-WL8
Poppet damper
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
Torque wrench
Capable of
236 ft·lb (320 N·m, 32.7 m·kg)
Seat retainer,
Cap ring
Swagelok Tools Available
Large cap ring spanner
2 7/8 in. or 73 mm Cap ring
Filter insertion tool
—Inlet filter
Filter pick tool
—Inlet filter

Exploded View
2
Stem
Spring button
Spring stabilizer
Range spring
Diaphragm
Stop plate
Seat retainer
Seat
Poppet
Poppet spring
Poppet damper
Inlet lter
Cover
Stem nut
Handle
Body
Cap ring
Body cap
Seat Assembly

3
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 may fall from the cap assembly
when lifted. Set aside for later use.
5. Remove the diaphragm and the stop plate from the body.
NOTICE
Do not damage the diaphragm sealing face on the
body. Leakage could result.
6.
Loosen and remove the seat assembly. Discard seat and
seat retainer.
NOTICE
Be careful not to scratch the inside of the body.
Leakage could result.
7. Invert the body and remove the poppet, the poppet spring
and the poppet damper.
8. Remove the inlet filter from the inlet port (marked ‘HP’)
using the filter pick tool. Discard old lter.
NOTICE
Be careful not to scratch the sides of the inlet port.
Leakage could result.
Diaphragm
Stop plate
Body
Body
Seat retainer
Seat
Poppet damper
Poppet
Poppet spring
Cap assembly
Range spring
Body
Cap ring
Handle
Large cap ring spanner
Filter pick tool
HP
Inlet port
Discard
inlet filter.

Swagelok — TM Swagelok Company
© 2011, 2014, 2015 Swagelok Company
October 2015, R3
MS-CRD-0136
13. Tighten the seat assembly to 13 ft·lb (17.5 N·m, 1.8 m·kg).
14. Install the diaphragm on the body with the large
convolution facing towards the body.
15. Install the stop plate onto the diaphragm with the boss on
the stop plate facing away from the diaphragm.
16. Reinsert the range spring into the cap assembly if
necessary.
17 Tighten the cap ring to 236 ft·lb (320 N·m, 32.7 m·kg).
18. Test the regulator for proper operation.
19. 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).
For additional information, see www.swagelok.com.
Reassembly
NOTICE
Ensure all parts and tools are free of debris or
damage.
9. Insert the inlet filter into 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.
10. Insert the seat into the seat retainer with the groove
facing away from the seat retainer.
11. Place the poppet through the seat. Place the poppet
spring and the poppet damper onto the exposed end of
the poppet.
12. Invert the body and thread the seat assembly into the
body.
Note: Lubricate the seat retainer threads only. Do not
contaminate the seat face or body interior with
lubricant.
Cap ring Large cap ring spanner
Poppet damper
Poppet spring
Poppet
Seat
Seat
Seat retainer
Groove
Stop plate
Diaphragm
Boss
Cap assembly
Range spring
Seat assembly
Body
Poppet damper
Large convolution
Diaphragm
Body
Filter insertion tool
Inlet lter
HP
Inlet