Installation, Operation and Maintenance Manual
【
H-V063-E-9
】
Self Control Valves (Pressure Reducing Type / Pressure Relief Type / Pressure Retaining Type)
15
Pressure Reducing Type (V82)
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] with the Allen wrench and remove the body (bottom) [a1] and body (top) [a2] from the
housing [b].
4) Remove the compression spring [h] and spring plate [f].
5) Loosen bolt [k] with the Allen wrench and remove the compressor [g] and diaphragm [c].
6) Pull out the piston [d] from 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.)
Tightening torque of the bolts
Unit: N-m {kgf-cm} [lb-inch]
Nominal size
15mm (
½
”)
20, 25mm (
¾
”, 1”)
32, 40mm (1
¼
”, 1
½
”)
50mm (2”)
Torque Value
9 {92} [80]
12 {122} [106]
15 {153} [133]
29 {296} [257]
Pressure Relief Type / Pressure Retaining Type (V185 / V186)
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) Remove the covering caps on bolt [o], and loosen bolt [o] counterclockwise with an Allen wrench.
4) Remove the compression spring [h] and spring plate [f].
5) Remove the diaphragm [c] from the body [a].
Assembly procedure
Follow above steps in reverse to assemble valve. (Apply appropriate amounts of silicone grease to O-rings
before assembly.)
Tightening torque of the bolts
Unit: N-m {kgf-cm} [lb-inch]
Nominal size
15, 20mm (
½
”,
¾
”)
25, 32mm (1”, 1
¼
”)
40、50mm (1
½
”, 2”)
Torque Value
9 {92} [80]
12 {122} [106]
20 {204} [177]
11. Inspection items
- Perform periodic maintenance. (Leakage may develop due to temperature changes or over
periods of prolonged storage, rest or operation.)
* Inspect the follow items
(1)
Check for any flaw, cracks, or deformation on the outside of valve.
(2)
Check for fluid leaking out of the body of the valve.
(3)
Check the tightness of bolts, nuts, and lock nuts.
(4)
Check the tightness of Union nuts.
(5)
Check to ensure the adjusting screw operates smoothly.
Caution
