<Packed valve handling precautions>
Fig. 10-4-
8
•
Open the valve stem all the way out, but do not try
to open it beyond the stopper.
Cap
Torque
Pipe size of Packed Valve
Size of Hexagon wrench
12.70 mm and smallers
A = 4 mm
15.88 mm
A = 5 mm
•
Securely tighten the valve cap with torque in the
following table
Cap Size (H)
Valve Rod
Cap
Service
Port Cap
H17 - H19
H22 - H30
H14
H17
14~18 N.m
(1.4 to 1.8 kgf·m)
33~42 N.m
(3.3 to 4.2 kgf·m)
8~12 N.m
(0.8 to 1.2 kgf·m)
14~18 N.m
(1.4 to 1.8 kgf·m)
A
H
Hexagon wrench
is required.
Service Port Cap
Valve Rod Cap
CAUTION
•
KEEP IMPORTANT 6 POINTS FOR PIPING WORK
.
(1
)
Take away dust and moisture (inside of the connecting
pipes).
(2)
Tighten the connections (between pipes and unit).
(3)
Evacuate the air in the connecting pipes using a
VACUUM PUMP.
(4)
Check gas leak (connected points).
(5)
Be sure to fully open the packed valves before
operation.
(6)
Reusable mechanical connectors and flared joints are
not allowed indoors. When mechanical connectors are
reused indoors, sealing parts shall be renewed. When
flared joints are reused indoors, the flare part shall be
refabricated.
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