Pre-Action valve (open type) is a detection device of
water leakage for dry type of sprinkler system.
It is also used
for the close type and open type sprinkler head equipment and vapor fire fighting etc.
Due
to the dry type water leakage detection device, 2nd piping needs no insulation work. When
firing,
The electric moving ball valve will be opened to discharge water by
pushing the switch of supervisory
Panel of by sensor.
;)
