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Backflow prevention device
Backflow prevention device

Backflow prevention device

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SHANGHAI ZHEDONG VALVE GROUP CO.,LTD.

Jinshanqu,Shanghai,China
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Backflow prevention device according to the water supply equipment, especially the serious pollution of drinking water pipe back, and there is no effective prevent reflux for pollution situation, development of a strictly limited water pipes only one-way flow of hydraulic control device combination, its function is in any condition to prevent the backflow pipeline in the medium, so as to avoid backflow pollution. The backflow prevention is divided into low pressure backflow preventing device and pressure backflow preventer of two types, according to the national standard of low pressure backflow preventing device of head loss is less than 3 meters, pressure backflow preventing device of head loss is less than 7 meters.

Backflow prevention device according to the water supply equipment, especially the serious pollution of drinking water pipe back, and there is no effective prevent reflux for pollution situation, development of a strictly limited water pipes only one-way flow of hydraulic control device combination, its function is in any condition to prevent the backflow pipeline in the medium, so as to avoid backflow pollution. The backflow prevention is divided into low pressure backflow preventing device and pressure backflow preventer of two types, according to the national standard of low pressure backflow preventing device of head loss is less than 3 meters, pressure backflow preventing device of head loss is less than 7 meters.

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