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3-way pneumatic control valve

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Product Summary

Three-way pneumatic control valves have an L- or T-shaped hole through the middle. The different combinations of flow are shown in the figure. It is easy to see that a T valve can connect any pair of ports, or all three, together, but the 45 degree position which might disconnect all three leaves no margin for error. The L valve can connect the center port to either side port, or disconnect all three, but it cannot connect the side ports together.

3-way pneumatic control valve is a kind of check valves intended for installation at outlets of pumps in high-rise buildings and other water supply systems to prevent reverse flow of the medium. When the pump is about to stop water supply, the valves first shuts off slowly by about 90% so as to avoid water hammer caused by the sudden shutdown of the pump. When the pump comes to a complete stop, the valves then shuts off completely so as to prevent the reverse flow of water pumped out. This can effectively protect the pump and avoid the reverse rotation caused by the impact of reverse flow. This product is an indispensable protective device at outlets of pumps. It has a streamlined design, can realize precise turning on/off through guidance and is controlled by the solenoid valves.

3-way pneumatic control valve eliminates damaging water surges (hammer) caused when pump starts up and shuts off. The electrically activated valves gradually opens when pump starts up, and slowly closes before the pump is switched off. The valves also operates as a slow control check valves, preventing reverse flow and water hammer when power failure.

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