Sprinkler System Wet Valve, Alarm Check Valve (ZSFZ Serious )
The wet alarm valve
is a check valve that only allows water flows unidirectionally and
drive the matching part to alarm at prescribed pressure and flow. It
constitutes the sprinkler system with water flow inductor, pressure
switch and sprinklers. This valve is divided into two sides by a valve
flap. The above side is connected with system pipeline and the underside
is connected with water supply. The valve flap will open only when the
pressure between the two parts reach a certain level.
alarm valve is always on a set condition the system side is full of
pressurized water. The heat sensitive component on the sprinkler will
blast and spray automatically when there is fire somewhere. Thus the
pressure at system side will reduce and then valve flap opens because of
pressure difference. One hand the water supplied to system side, on the
other hand a small part of water flows to delayer
and reach water motor alarm bell finally to make it alarms. The
pressure switch turns pressure signal to electric signal and start fire
pump and auxiliary fire fighting equipment to put out the fire. Water
flow inductor will also work and show the position of fire.
The delayer is a cylindrical water storage tank that with inlet and outlet. Because that the pressure of system side will fluctuate
that the valve flap will open at a moment but will close right away. In
order that the water motor alarm bell makes misinformation, the delayer
store the water to buffer time.
switch turns the pressure of water into electrical signal and it was
installed above the delayer. When the system is started, pressure in the
alarm pipeline reaches the motion level of the switch and the contact
will close or open, turning water pressure into electrical signal.