Fire Sprinkler System Valve Alarm Check Valve 4"

Product Description

Fire Sprinkler System Valve Alarm Check Valve 4"

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 ºC to 70ºC 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.

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

Wet alarm check valve structure

Photos

Other Firefighting Equipment

Certificate

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