pipe valve is in the micro resistance slow close check valve, hydraulic control check valve, and on the basis of the multi-function hydraulic control valve. Is the latest addition to the pump export control valve. It has the electric gate valves, electric butterfly valve and check valve function, closed by a fast and slow closing action to eliminate the harm of water hammer, protect the safety of water pump and pipeline system. Mainly used in metallurgy, petrochemical, water, fire water supply and drainage systems, municipal, environmental protection life. The structure of the pipeline valve, rubber cover, the valve is mainly composed of valve body stem gate, upper and lower guide pin, etc. 1 product switch characteristics. When the pump starts, the inlet water through, filters, gate valves, high pressure pipe into the bottom of the piston cylinder, under the pressure of water, the piston push up and down, small disc drive slowly open, the valve plate and hydraulic driven by small valve plate to open at the same time, complete the valve open. 2. When the pump stop, speed dropped sharply in the valve, under the effect of gravity, the large disc close quickly to cut 90% of the water, water pressure at the exit of water into the filter, gate valves, high pressure pipe, into the top of the piston cylinder, forces the pistons to slowly closing small valve plate under water pressure, finally realizes the closed.

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