First, the working principle and use

ZSFZ type wet alarm valve device is composed of wet alarm valve, time delay device and hydraulic alarm bell. It is the main component of automatic sprinkler system. Its function is alarm water supply valve. At the corresponding working pressure, the pipe network is filled with pressure water. The alarm valve flap has its own weight closed, and the valve cavity is divided into the water supply chamber and the system cavity. At the same time, the annular groove on the valve seat is sealed, the alarm branch pipe has no pressure water, and the water alarm bell cannot alarm.

When a fire occurs somewhere in the protected area, the ambient temperature rises to the temperature level of the closed-type nozzle sensitive component (glass ball), the sensitive component bursts, the sealing component falls off, the nozzle opens, and the fire begins. At this time, the alarm valve system cavity water pressure Drop, form a pressure difference, the valve flap is lifted, open the water flow channel, the water supply pipe network continuously supplies water to the system network to extinguish the fire, and the annular groove on the valve seat is also opened, the pressure water enters the alarm branch pipe, after delay by the delay device, on the one hand The hydraulic alarm is activated, and a loud ringing alarm occurs. On the one hand, the pressure switch receives the pressure signal, and the contact closes to the control center.

The alarm valve produced by our factory adopts the flap internal balance structure, which has the characteristics of simple structure and strong sealing. The valve body is made of high-strength cast iron, valve seat, flap, connecting rod, silicon brass, stainless steel and corrosion-resistant material. Made, long life.

Second, technical parameters

1, the ambient temperature 4 ° C ~ 70 ° C

2. Nominal diameter: 100, 150, 200

3. Rated working pressure: 1.2Mpa

4, sealing test pressure: 204Mpa

5, the maximum pressure of the valve body is 4.8Mpa

6, the connection size is shown in the table below