Blank cap (mm [in]) Tightening torque (N•m [kgf•cm])
6.35 (1/4) 16 to 18 (160 to 180)
9.52 (3/8) 32 to 42 (320 to 420)
12.70 (1/2) 49 to 61 (490 to 610)
15.88 (5/8) 63 to 75 (630 to 750)
19.05 (3/4) 90 to 110 (900 to 1100)
¢
Handling precautions for 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 [kgf•cm])
6.35 (1/4) 20 to 25 (200 to 250)
9.52 (3/8) 20 to 25 (200 to 250)
12.70 (1/2) 28 to 32 (280 to 320)
15.88 (5/8) 30 to 35 (300 to 350)
19.05 (3/4) 35 to 40 (350 to 400)
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 valve shaft, and turn it clockwise.
2. Stop turning when the valve shaft can no longer be turned. (Closed position)
Liquid pipe
Gas pipe
Seal (blank cap installation
portion)
Hexagon wrench
Opening direction
Opening direction
- 106 -
3-3. Pipe connection 3. Pipe installation
SYSTEM
DESIGN
SYSTEM
DESIGN
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