Ductile iron general type anti-fouling isolation valve HS41X-16Q

HS41XAnti-fouling isolation valve(Pipesbackflow preventerThe valve is a safety device used for preventing backflow contamination of drinking water pipeline, which is a safe and reliable valve to prevent backflow contamination of drinking water to ensure the hygiene and safety of drinking water by introducing foreign advanced technology. Anti-fouling isolation valve of the first and second levelcheck valveIt is mainly composed of valve body, valve cover, valve flap, sealing gasket, spring and so on. This product has a reasonable structure, easy to use, strong sealing performance, durable and beautiful modeling and other characteristics. Widely used in electric power, metallurgy, petroleum, chemical industry, gas, urban construction, papermaking, textile, medicine, food, shipping, water supply and drainage, energy, drilling and other sectors.

How it works:

Ordinary anti-fouling isolation valve: two check valves are connected in series, when one of the first check valve seal is damaged, the second check valve can still play a sealing role to prevent backflow; but one or two check valve seal is damaged at the same time, it will lose the role of checking, the safety and reliability of the relatively poor, the working principle is relatively simple. Safety type anti-fouling isolation valve: add drain in the middle on the basis of ordinary type, the upper chamber of drain is connected with the inlet end of the first check valve with high-pressure hose, so that even if the seal of one or two check valves is destroyed at the same time, the drain can play a role in preventing reflux pollution.

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