Ductile Iron General Type Anti-Fouling Isolation Valve HS41X-16Q

HS41X anti-fouling isolation valve (pipeline backflow preventer) is used to prevent drinking water pipeline backflow contamination of safety devices, is the introduction of foreign advanced technology developed by their own research and development, safe and reliable, to prevent the backflow of drinking water contamination of the valve to ensure the health and safety of drinking water. Anti-fouling isolation valve of the first and second stage check valve is mainly composed of valve body, valve cover, valve flap, sealing gasket, spring and so on. This product is characterized by reasonable structure, easy to use, strong sealing performance, durability and beautiful modeling. It is 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 departments.

Working Principle

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.

Product Parameters

Product Size Reference