6. SYSTEM DESIGN
Handling precautions for the valves
Mounted part of Blank cap is sealed for protection.
Fasten blank cap tightly after opening valves.
Blank cap
[mm (in.)]
Tightening torque
[N·m]
6.35 (1/4) 20 to 25
9.52 (3/8) 20 to 25
12.70 (1/2) 25 to 30
15.88 (5/8) 30 to 35
19.05 (3/4) 35 to 40
Operating the valves
Use a hexagon wrench (size 4 mm).
Opening (1) Insert the hexagon wrench into the valve shaft, and turn it counterclockwise.
(2) Stop turning when the valve shaft can no longer be turned. (Open position)
Closing (1) Insert the hexagon wrench into the valve shaft, and turn it clockwise.
(2) Stop turning when the valve shaft can no longer be turned. (Closed position)
Opening direction
Opening direction
Hexagon wrench
Liquid pipe
Gas pipe
Seal (blank cap installation portion)
- (06 - 29) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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