Silent check valves for water supply and drainage, fire, HVAC system, installed at the pump outlet to prevent flow reversal and water hammer damage to the pump.
Hydraulic control valve for medium water pump discharge piping and valves and check valves as a closed circuit is used to prevent and reduce the piping system back and generate prosperity in the medium of water hammer is too large to protect the piping system.
Swing check valve disc rotates around the shaft. The fluid resistance is generally less than lift check valve, which applies to the larger diameter of the occasion. Swing check valve according to the number can be divided into ill with Swing, Swing, and double valve Swing Orange Peel three. Ill with swing check valves are generally applicable to medium-caliber occasions.
Lift check valve structure generally similar to the disc along the channel to line up or down movement, and reliability, but the fluid resistance is greater for small-caliber light situations. Lift check valve can be both straight-through and vertical. Straight-through lift check valve generally only be installed in horizontal pipeline, the vertical lift check valve installed in a vertical line on the general.

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