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 (lbf· ft)]
6.35 (1/4) 20 to 25 (14.8 to 18.4)
9.52 (3/8) 20 to 25 (14.8 to 18.4)
12.70 (1/2) 25 to 30 (18.4 to 22.1)
15.88 (5/8) 30 to 35 (22.1 to 25.8)
19.05 (3/4) 35 to 40 (25.8 to 29.5)
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 - 28) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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