５．
Operation Manual
5.1
Precautions
5.2
Procedure
①
Please close the shut off valve at inlet side, outlet side and by-pass line.
②
Open the valve from supply source, then slowly open the by-pass line's shut off valve, let
the water flow cleaning the pipe.
③
Close the by-pass line's shut off valve.
④
At inlet side, turn the shut off valve to around half open, then slowly turn the shut off valve
to around 1/4 open at outlet side, let the water flow awhile. This is to let the air out of the
pipe, the product internal air can get out, at outlet side the valve should start function to
reduce the pressure.
When occurred hunting or no pressure reduce function, turn the bonnet plug open, let the
air out of the valve body.
△
!
Warning
⦿
After installation, before water flow, make sure all the pipe work been proper installed.
※
If the water spouting off the pipe line, it may dirty the surrounding and there is a
risk to get hurt.
△
!
Caution
⦿
Remove the foreign particles in the pipe line before install the valve.
※
The valve can't have the original performance and may damage if foreign particles
in the valve.
⦿
When water flow, to avoid happened water hammering, please slowly open the stop valve.
※
If rapidly open the stop valve, hunting and water hammering may occurred, also
may damage the valve.
⦿
If the pipe line long period not running, closed the stop valve, drain dry the valve and pipe line.
※
The water dirt in the pipe line may cause operation failure.
⦿
If open the shut off valve of the by-pass line, make sure the outlet pressure not over the outlet
setting pressure by confirmation with pressure gauge and slowly adjust the valve.
△
!
Caution
⦿
Please do not open the shut off valve at outlet side bigger than inlet side.
※
Hunting and water hammering may occurred.
