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fire fighting valve or fire safety valve

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seat: Asia-Pacific China
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Last update: 2016-12-07 04:26
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Specifications

Fire fighting valve or fire safety valve is a connector to fire water supply with the valve interface,  used for factory, warehouse, high-rise buildings, public buildings and ship . normally installed in fire hydrant box, with fire hoses and water gun or wait for equipment supporting the fire extinguishment.

 

A fire hydrant (also known colloquially as a fire plug in the United States or as a johnny pump in New York City, because the firemen of the late 19th century were called Johnnies ), is an active fire protection measure, and a source of water provided in most urban, suburban and rural areas with municipal water service to enable firefighters to tap into the municipal water supply to assist in extinguishing a fire.

Operation

A hose is attached to the fire hydrant, then the valve is opened to provide a powerful flow of water, on the order of 350 kPa (50 lbf/in²) (this pressure varies according to region and depends on various factors including the size and location of the attached water main). This hose can be further attached to a fire engine, which can then use a powerful pump to boost the water pressure and possibly split it into multiple streams. The hose may be connected with a threaded connection or a Storz connector. Care should be taken not to open or close a fire hydrant too quickly, as this can create a water hammer which can damage nearby pipes and equipment. The water inside a charged hoseline causes it to be very heavy and high water pressure causes it to be stiff and unable to make a tight turn while pressurized. When a fire hydrant is unobstructed, this is not a problem, as there is enough room to adequately position the hose.

 

Product name: Indoor fire hydrants with decompression and steady pressure

Model: SNW65-I-A-M

Material: made of cast iron.

Inlet interface: 65 mm / 2.5 inch

Intake type: cylindrical pipe male thread

Intake Diameter: G2 1/2

Outlet type: cylindrical pipe male thread with duct buckle

Outlet Diameter: 65 mm / 2.5 inch

Rated working pressure: 1.6 Mpa

Height of valve opening: 23 mm

For water and foam mixed liquid only

Standard: certification: ISO9001 in accordance with GB3445 china national standard

 

 

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