Swagelok KPR Series Maintenance Instructions

Kit Contents
Inlet filter (1)
■
Poppet spring (1)
■
Seat (1)
■
Diaphragm (2 for 0 to 250 psig and 0 to 500 psig
■
regulator, 1 for all others)
Lubricant tube with MSDS (1)
■
CAUTION
Before servicing any installed regulator, you must depressurize the system and purge the regulator.
Body Disassembly
1. Turn handle counterclockwise until it stops in
order to release the spring load.
2. Loosen cap ring with a 2 in. wrench, using the
flats to grip the cap ring. Remove cap assembly
and handle as one piece. In 0 to 500 psig
regulator assemblies, the range spring and spring
button will fall from the cap when it is lifted. Set
aside the range spring and spring button for later
use during reassembly.
3. Remove stop plate and diaphragm from body.
It may be necessary to tap the regulator at
an angle, by hand, to remove the diaphragm.
Set aside stop plate for later use. Discard the
diaphragm.
4. Remove seat retainer and seat (as one piece)
using a 5/8 in. socket wrench and discard both
components.
5. Pull poppet, poppet spring, and poppet
damper from body and discard. If poppet
damper remains in the body, invert the body and
use the poppet to loosen and remove the poppet
damper. Be careful not to scratch the inside of
the body.
Filter Disassembly
1. Remove the old inlet filter from the inlet port
(marked 'HP') using the filter pick tool. Discard
old filter.
NOTICE
Be careful not to scratch the sides of the inlet
port. Leakage could result.
HP
Inlet port
Discard
inlet filter.
KPR Series Maintenance Instructions
Poppet damper (1)
■
Poppet (1)
■
Seat retainer (1)
■
Filter pick tool
Pressure-Reducing Regulators
Tool Requirements
Filter insertion tool
■
Filter pick tool
■
12.9 ft·lb (17.5 N·m, 1.8 m·kg) torque wrench
■
129 ft·lb (175 N·m, 17.8 m·kg) torque wrench
■
5/8 in. socket wrench
■
2 in. wrench
■
Poppet damper
Handle
Cap assembly
Cap ring
Stop plate
Diaphragm
Seat retainer
Seat
Poppet
Poppet spring
Body
Inlet port (marked 'HP')
Inlet filter