Wet alarm check valve for fire fighting system
1. Introduction:
ZSFZ Wet alarm valve is the key component of automatic sprinkler system. It consist of wet alarm valves, retard, water alarm, and other components (such as pressure switches, flow meters, closed head etc.). The system usually in standby state, the pressure pipe filled with water. When the fire starts and environmental temperature rise, lead to the fire sprinkler sensitive element (glass ball) action, sealing components off, auto start the wet system, water directly sprayed into the fire area and send alarm signals to the control center. It’s widely used in some fire danger places(4 ℃ to 70℃ environment temperature), such as warehouse, hotel, mall, office or high building and garage etc.warehouses, hotels, shopping malls, hospitals, theaters, office buildings, high-rise building and garage.
2.Technical parameters:
Model | ZSFZ80 | ZSFZ100 | ZSFZ125 | ZSFZ150 | ZSFZ200 | ZSFZ250 |
Norminial diameter(mm) | 80 | 100 | 125 | 150 | 200 | 250 |
Working pressure(Mpa) | 1.6Mpa | |||||
Sealed test(Mpa) | 3.2Mpa | |||||
Strength test(Mpa) | 6.4Mpa | |||||
Flow rate(L/min) | 15＜Q＜60 | |||||
Retard alarm time(s) | 5~90 | |||||
Friction resistance(Mpa) | ≤0.035 | |||||
Height of alarm valve(mm) | 250 | 260 | 265 | 270 | 370 | 430 |
Outside diameter of flange(mm) | 200 | 220 | 250 | 285 | 340 | 405 |
Inside diameter of flange screw hole(mm) | 160 | 180 | 210 | 240 | 295 | 355 |
Diameter of screw hole(mm) | 8 | 12 | ||||
Quantity of screw hole | 18 | 22 | 26 | |||
