Swagelok KCB Series Technical specifications

Kit Contents
KCB Series Regulators
Maintenance Instructions
Symbols
Tools Required
Lubricant
MS-LT-WL8
Piston sealSeat Retainer sealSeat retainer
Lightly lubricate
Discard
Tool Size Component
Vise
-Body
Socket
5/8 in. or 16 mm Seat retainer
11/16 in. or 17 mm Antitamper nut
Crow’s foot
1 1/4 in. or 32 mm Body cap
Open-ended wrench
1 1/4 in. or 32 mm Body cap
Torque wrench
Capable of
25 ft·lb (34 N·m, 3.5 m·kg)
Seat retainer,
Body cap

Exploded View
2
Seat Assembly
Handle
Seat retainer
Seat
Retainer seal
Stem
Range spring
Piston
Body cap
Stem nut
Spring stabilizer
Spring button
Piston seal
Body

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 body cap.
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. Turn the body upside down. Remove the piston assembly
by tapping the body gently on a soft surface.
6. Remove and discard the piston seal from the piston.
7. Loosen and remove the seat assembly. Discard the seat,
seat retainer and retainer seal.
NOTICE
Be careful not to scratch the inside of the body.
Leakage could result.
Cap assembly
Range spring
Handle
Body cap
LP
Piston assembly
Body
Piston seal
Piston
Body
Retainer seal
Seat retainer
Seat

4
Swagelok — TM Swagelok Company
© 2010, 2015 Swagelok Company
October 2015, R1
MS-CRD-0134
For additional information, see www.swagelok.com.
Reassembly
NOTICE
Ensure all parts and tools are free of debris or
damage.
8. Insert the retainer seal into the seat retainer with the
groove facing away. Insert the seat into the seat retainer.
9. Invert the body and thread the seat assembly into the
body.
10. Tighten the seat assembly to 11.2 ft·lb (15.2 N·m,
1.6m·kg).
11. Place the piston seal onto the piston.
12. Place the piston assembly into the body until it seats
against the seat retainer.
NOTICE
Do not damage the piston seal. Leakage could
result.
13. Reinsert the range spring into the cap assembly with the
painted spring end visible if necessary.
14. Thread the cap assembly into the body and tighten the
body cap to 25 ft·lb (34 N·m, 3.5 m·kg).
15. Test the regulator for proper operation.
16. If using an antitamper nut, thread the antitamper nut onto
the stem after the set outlet pressure is reached. Tighten
the nut to 13.0 ft·lb (17.5 N·m, 1.8 m·kg).
Body cap
Seat
Seat retainer
Retainer seal
Groove
Seat assembly
Body
Piston assembly
Body
Range spring
Cap assembly
Piston seal
Piston
Threads only