Preaction Alarm Check Valve for Water Sprinkler System

Product Description

Preaction Alarm check Valve for water sprinkler system

Introduction     
ZSFM/ZSFG type deluge alarm valve which is based on GB5135.5-2003 standard shows lever type structure and has the anti-returning function. The valve is widely used in open sprinkler system, for instance, deluge system, water curtain system, water mist system. The deluge valve starts when the pressure in the diaphragm is released then the pressure of the water supplying side pushes open the valve clack. To release the pressure in the diaphragm, there are quite some ways,such as electric conduct, wet type conduct, dry type conduct. This type of automatic fire fighting system is suitable for hospitals, hotels, factories, malls, airports, libraries, gym, exhibition center.

1. ZSFG Deluge valve is a one way valve, which is opened by wet method, dry method, electric method or manual method, can make the water automatically flow into sprinkler system in one way and at the same time make the alarm. It is widely used in sprinkler system, pre-acting system, water spray projecter system or water curtain system.
 
2. Sprinkler system mainly consists of deluge valve, automatically open and control system, tube web, open sprinkler and water supply system. It is used for dangerous fire, more combustibles, huge heat generated, big fire and spread rapidly fire with inflammable and explosive places, and the required temperature is no less than 4 degree centigrade. Such as Alcohol solvent products factory, the place of flammable liquid spray operation, Chemical goods warehouse and stage grape
 
3. Pre-acting system mainly consists of deluge valve, wet valve, automatically open and control system, tube web, close sprinkler and water supply system. It is widely used for higher temperature or cold place, with quick alarm, quick sprinkler, full function and widely usage advantages. It is normally fixed for the place where need water to fire fighting, not allowed sprinkler for non fire, such as library for precious books, file rooms and storage with precious goods.
 
4. Water spray projecter system mainly consists of deluge valve, automatic open and control system, tube web, water spray sprinkler and water supply system. It is widely used for put out solid fire, liquid fire, electric fire, flammable gas and liquid I, II, III, such as paper, textile place, cable, oil, gas and flammable liquid containers.
 
5. Water curtain system consists of deluge valve, automatic open and control system, tube web and water supply system. It is widely used for window, and wall for flammable construction. It is normally used together with fire proof curtain, glass wall, with isolation function.
 
Technical parameters

Model	Rated W.P(Mpa)	Sealing Test Pressure(Mpa)	Strength Test Pressure(Mpa)	Norminal Diameter(mm)	Flange Diameter(mm)	Symmetric Hole Diameter(mm)	Screw Hole No. and Dia ΦA(mm)
ZSFM50	1.2	2.4	4.8	DN50	165	125	4xΦ18
ZSFM65				DN65	185	145	4xΦ18
ZSFM80				DN80	200	160	8xΦ18
ZSFM100				DN100	220	180	8xΦ18
ZSFM125				DN125	220	180	8xΦ18
ZSFM150				DN150	285	240	8xΦ22
ZSFM200				DN200	340	295	12xΦ22
ZSFM250				DN250	405	355	12xΦ26

 
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