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Operating principle of H76H disc double flap check valve
Time: 2021-03-26 17:33:46 Source: Yonglong Valve Reading: zero second
Operating principle of H76H disc double flap check valve
The butterfly check valve has two spring loaded D-shaped discs, which are placed on the rib shaft across the valve through hole. The two discs rotate around the middle valve shaft, like two sliding doors. At the same time, they are equipped with springs to push the two discs to move in the direction of closing the valve.
Operating principle of H76H disc double flap check valve:
The double disc structure of H76H butterfly check valve adopts two spring loaded discs (half disc), which are suspended on the hinge pin with vertical center. When the fluid begins to flow, the valve disc opens under the resultant force acting on the center of the sealing surface. The acting point of the spring support force that acts as a reaction is located outside the center of the valve disc surface, making the valve disc root open first. This avoids the friction on the sealing surface of the old conventional valve when the valve disc is opened, and eliminates the wear of components.
When the flow rate slows down, the torsion spring automatically reacts, making the valve disc close and close to the valve body seat, reducing the stroke distance and time of closing. When the fluid flows backward, the valve disc gradually approaches the valve body seat, and the dynamic response of the valve is greatly accelerated, reducing the impact of water hammer, so as to achieve impact free performance. When closing, the effect of the spring force acting point makes the top of the valve disc close first to prevent the valve disc root from being bitten, so that the valve can maintain the sealing integrity for a longer time.
H76H disc double valve Check valve It is simple in structure, can only be installed on horizontal pipes, and has poor sealing performance. The sealing performance of butterfly double valve check valve is also not high in use. The butterfly double valve check valve automatically opens and closes the valve disc depending on the flow of the medium itself, to prevent the backflow of the medium and the hammer effect of aquatic products. It is suitable for urban, industrial and high-rise building water supply and drainage pipe networks, and its structural length is shorter than that of the swing check valve, The installation is quite convenient.
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