Principles of valve opening and closing valve parts by medium flow and the forces to open or close the valve to prevent the media called the check back. Check valves are automatic valves, mainly for one-way flow of media channels, only allowing media to flow in one direction, to prevent accidents. Check valve according to the structure can be divided into lift check valve, swing check valve and butterfly valve of three. Lift check valve can be divided into two kinds of vertical and horizontal. Swing Check into unicuspid type, double valve type and Orange Peel three. Butterfly valve for the straight-through, the above check valve in the connection of several forms can be divided into threaded connection, flange connection and welding of three. Check valve is to automatically prevent fluid backflow valve. Check valves in the fluid under pressure valve opens, fluid flows from the inlet side of the exit side. When the import side, the pressure is lower than the export side, the valve flap in the fluid pressure, the role of such factors as gravity itself automatically close to prevent fluid backflow.
Gas Grill Valves
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.
Top Burner Control Valve
Slow Close Check Valve for Micro to the discharge pipe, installed in the pump outlet to prevent the media and the elimination of destructive water hammer reflux, and can effectively reduce the water hammer pressure valve is closed, can protect the safe operation of the network.

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