●Put the valve in a proper position.
●
Weld the valve with the pipeline.
●Before welding, cover the valve
with wet cloth to avoid internal slide
from being burnt and prevent water
from flowing in the pipeline.
●During welding, charge nitrogen
into the pipes. The pressure should
be controlled within 0.5±0.1 kgf/cm2
(relative pressure).
●Check various parts and connecting
lines.
●
If no problem is found, hook the
front panels and tighten the screws.
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