Deluge Alarm Valve Preaction Alarm Valve, Check Valve

Basic Info

Seal Test	24bar
Strength Test	48bar
Transport Package	Packing by Wood Box
Specification	ZSFU100
Trademark	sanxing
Origin	Quanzhou, Fujian, China
HS Code	8481804090

Product Description

product description

pre-action systems are usally employed in areas that are at risk for serious water damage due to damaged sprinklers and/or piping.they operate faster than dry systems.
the pre-action system is a fire extinguishing system with the nozzles normally closed.the pipe network is usually not filled with water.
when a fire occurs,after the fire detector alarms ,the automatic control system controls the valve exhaust and water filling,and changes from a dry type to a wet type system.water sprayinh only started when the ignition point temperature reached the open and closed sprinkler.
the pre-action system has the characteristics of both a dry sprinkler system and a wet sprinkler system,and also overcomes the shortcomings of the dry sprinkler system's low fire control rate and the wet system's prone to water stains.
the system can increase the speed of fire extinguishing .it can also be used in places where pipes and sprinklers are easily damage, instead of wet systems.it ccan alsobe used in buildings with high safety requirements for sprinkler systems.

 

technical parameters

specification	ZSFU100	ZSFU150	ZSFU200
nominal diameter(mm)	100	150	200
rate working pressure(Mpa)	1.2	1.2	1.2
valve body height(mm)	260	270	370
flange diameter(mm)	220	285	340
systemtric hole diameter(mm)	180	240	295
screw hole number and diameter(mm)	8*Φ18	8*Φ22	12*Φ22

working principle