Fujitsu AOU48RLXFZ Design & Technical Manual page 182

Handling precautions for the valves
● Mounted part of Blank cap is sealed for protection.
● Fasten blank cap tightly after opening valves.
Blank cap Tightening torque
[mm (in.)]
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
Liquid pipe
[N·m (lbf· ft)]
Hexagon wrench
Seal (blank cap installation portion)
Gas pipe
- (06 - 28) -
6. SYSTEM DESIGN