New slow closing check valve won the national patent

The “XF rubber slow closing check valve” successfully developed by Jiangsu Asia Pacific Group won a national new practical patent in December 2003. This is a new type of water supply and drainage valve product with an all-rubber structure and a "buck-like shape" with the function of "positive inflow and reverse backstopping." Based on force analysis and force calculation, it adopts different design mechanisms for different working conditions, selects different rubber formulas, and is manufactured according to special processes. It can be widely used in various water outlets of water conservancy projects to prevent Invert irrigation and reverse flow.
Compared with traditional valves, this product has obvious advantages: It can be automatically opened and closed according to the water pressure difference, safe, reliable, no noise, no personnel operation, no maintenance. When working in forward direction, the water resistance is small, the starting pressure is small, and the flow rate is naturally adjusted according to the water pressure. Water flows in from the water inlet. With a small water pressure, the valve opening can be opened. The larger the water pressure is, the larger the opening of the valve is, and the water flow is increased. The bigger. When working in reverse, the valve port closes naturally and the seal is reversed. The larger the back pressure is, the tighter the valve port is closed, and the better the sealing effect, the reverse flow and leakage are prevented. And it has the characteristics of anti-corrosion, anti-aging, no deformation, strong adaptability, long service life, wide use range and so on.