An overview of the pneumatic valve in the water supply security

the safety of water supply pneumatic valve

does not affect the water quality is an important index of pneumatic valve selection. Pneumatic valve pneumatic valve body part mainly come into direct contact with the water inside, sealing parts, pneumatic valve plate, etc. , at present a lot of manufacturers of pneumatic sealing part USES the rubber material of the valve. The commonly used rubber material is best rubber ( NBR） The neoprene ( CR） Or ethylene propylene rubber ( EPDM） 。 These rubber is synthetic rubber.

in the synthesis process, to be in the natural rubber and a variety of raw materials and additives including age resister. Eventually synthetic rubber can be used for water supply pneumatic valve sealing, must see this kind of rubber is non-toxic, conform to drinking water hygiene standards. As for the inside pneumatic valves and pneumatic valve plate etc, many factories adopt the method of painting in the past, only consider the rust problem, regardless of whether the toxic.

in practice found that the water supply network, pipe lining anticorrosive problem solved, pneumatic valve and pipe network without lining, due to the precipitation phenomenon of water and the iron bacteria in the water inside the pneumatic valve cavity and the erosion and deposition of pneumatic valve board, causing some accumulation phenomena of the pneumatic valve body wall in the foothills. Not only affect the water quality of water supply, but also one of the main reasons for some of the pneumatic valve is lax.

so, these parts, direct contact with water spray should be non-toxic paint, it is best to adopt the method of electrostatic spraying spraying non-toxic epoxy powder. When choosing pneumatic valves, should first check with rubber and coating of non-toxic, certificates and inspection certificates, only on the condition of pneumatic valve, to ensure the water quality is not affected by pollution, guarantee the safety of water supply.