Swagelok RHPS Series, Руководство пользователя, Страница: 7 / 10

Maintenance
Required tools for maintenance

a vice to fasten the regulator

pincers to take out the O-rings

a pair of tongs for a retaining ring 8 mm

a torque wrench

a torque wrench hexagon head key 5 HPRSS4 only

a torque wrench socket 10 HPRSS8 only

a “seat retainer” removing tool. (OT-xxxx-02) HPRSS4 only

an “open end insert tool”, 13 mm HPRSS4 only

an “open end insert tool”, 25 mm HPRSS4 only

an “open end insert tool”, 19 mm HPRSS8 only

an “open end insert tool”, 36 mm HPRSS8 only

an “open end insert tool”, 25 mm HPRSS8 only

media and temperature compatible lubricant for reassembling threaded parts

media and temperature compatible lubricant for O-rings

Snoop
®
liquid leak detector
Disassembly

HPRSS4: Loosen the hexagon socket head screws and remove the spring housing, spring and
bottom spring guide.

HPRSS8: Loosen the spring housing and remove the spring housing, spring and bottom spring guide.

Loosen the seat retainer to remove the valve assembly, seat and valve spring.

Push the valve down when loosening the seat-retainer.

The force of the valve spring may cause galling of the threads.
Inspection of disassembled parts

Check all parts for abnormal wear. Replace all parts in case of doubt.
Points of attention before assembly

All parts must be clean and undamaged before starting assembly.

Swagelok recommends replacing all o-rings and the diaphragm before assembly.

All threaded parts must be lightly lubricated before assembly, this to avoid galling of threads.

All o-rings need to be lightly lubricated to improve the lifetime of the o-ring and the performance of the
regulator.
Assembly
Follow the points for disassembly in reverse order to assemble the regulator.
7