Zsfz150 Wet System Alarm Valve, Check Valve

Basic Info

Model NO.	ZSFZ150
Type	Outdoor Fire Hydrant
Decompression	Normal Fire Hydrant
Rotation	Ordinary Bolt
Outdoor Fire Hydrant Type	High-Pressure Fire Hydrant
Fire Hydrant Type	Ordinary
Rate Working Pressure	12bar
Seal Test	24bar
Strength Test	48bar
Transport Package	Packing by Wood Box
Specification	ZSFZ100
Trademark	sanxing
Origin	Quanzhou, Fujian, China
HS Code	8481804090

Product Description

product description

ZSFZ wet alarm valve is the key component of automatic sprinkler system.It consist of valve body,delayer,water motor alarm and other components.It is used in places where fire can be extinguished by water.

 

technical parameters

specification	ZSFZ-100	ZSFZ-125	ZSFZ-150	ZSFZ-200
nominal diameter (mm)	DN100	DN125	DN150	DN200
rate working pressure(Mpa)	1.2	1.2	1.2	1.2
strength test (Mpa)	2.4	2.4	2.4	2.4
seal test(Mpa)	4.8	4.8	4.8	4.8
friction resistance(Mpa)	<0.07	<0.07	<0.07	<0.07
response time(s)	<15	<15	<15	<15

working principle
the working principle of thr wet alarm valve is to reduce or raise the openning and closing flaps of the water pressure on the side of pipe network system.In the waiting state,when the water supply pressure fluctuates slightly,the function of thr bypass balance pipe balances of the valve disc,and the upper pressure surface of the valve disc is larger than the lower pressure surface, and the valve disc will not open and false alarm will occur.
When a fire has a spray and a blast causes the water pressure on the pipe network system side to drop,the pressure difference between the water supply side and the system side will open the valve flap to the open nozzle to continuously supply water for fire suppression.
The control status of the control ball valve between the wet alarm valve alarm port and retarder must be kept fully open and locked,and the test alarm control ball valve must be closed.
When a trial alarm is required:
remove the locking device of the control ball valve between the alarm port and the retarder and close it .
at this time ,the alarm test can be performaned by opening the test alarm control ball valve.
immediately after the test,the two control ball valves were restored to their original state.