Installation, Operation and Maintenance Manual
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H-V063-E-9
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Self Control Valves (Pressure Reducing Type / Pressure Relief Type / Pressure Retaining Type)
14
10. Disassembling method for replacing parts
- When replacing valves and parts, completely eliminate pressure in the pipe.
- When conducting piping work, wear personal protective equipment
appropriate to the contents of work. (Failure to do so may cause an
injury.)
- When disassembling the valve, unlock the adjustment screw until the
compression spring is discharged. (You may be injured.)
- Do not take the pressure gauge apart.
Gauge contains a buffer fluid (between gauge and diaphragm)
which will leak if the gauge is disassembled.
- A socket wrench for disassembling the body part requires special jig (Optional item) according
to model and size. For details, please consult the nearest sales office.
● Safety goggles
● Protective gloves
● Spanner wrench
● Allen wrench
● Socket wrench
● special jig (Optional item)
Pressure Reducing Type (V182)
Disassembly Procedure
1) Remove the cap [l] from the top of the housing [b].
2) Loosen the lock nut [i] counterclockwise with a spanner wrench and the adjusting screw [j]
counterclockwise with an Allen wrench.
3) Loosen the bolt [o] and remove the body (bottom) [a1] and body (top) [a2] from the housing [b].
4) Remove the compression spring [h] and the spring plate [f].
5) Remove the piston base [e] counterclockwise from the piston [d].
6) Push up and remove the piston [d] form the bottom of the body (top) [a2]
Assembly procedure
Follow above steps in reverse to assemble valve. (Apply appropriate amounts of silicone grease to O-rings
before assembly.)
Necessary items
Gauge
Diaphragm
Warning
Caution
Caution
