Special Composite Material Door on Zhanjiang Gate

     First, summarize the products of check valves, which are mainly installed at the end of drainage pipes. They are suitable for water supply and sewage treatment works, as well as for all kinds of pipe outlets and drains in agricultural irrigation pump stations as overflow and check facilities. Prevent external water pouring back, can also be used for various shaft covers. The main features are light weight, high strength, so the opening angle is large, the impact force is small, and it is usually installed directly at the outlet of the water pump, especially in the situation where the hydraulic loss of the outlet of the pipe is small and the impact resistance is high. Material is FRP, composite material HDPE, stainless steel, carbon steel, cast iron and other materials. Products are mainly installed in the river, coastal drainage pipe outlet of a one-way valve, when the river tide level higher than the outlet pipe, And when the pressure is greater than the pressure inside the pipe, the shutter panel automatically closes to prevent the river tide from pouring into the drainage pipe. This product is a product developed by our company. The product is based on Q/TF-B2771 technical standard; according to GB/T13927 test requirements; nominal pressure of equipment (PN): 0.25-1.6 Mpa. nominal diameter (DN): 200-2800mm. Second, the shutter door is suitable for overflow of various pipes and water channels in water supply, drainage and sewage treatment projects. It can also be used as cover of various shaft wells, which is only used for outlet of unidirectional water flow. Third, structural characteristics: the racket door has the function of positive unidirectional opening and reverse closing of the runner. The valve cover of the shutter makes the door page open or close automatically under the action of the current, or with a little external force, with the help of the balance of its own counterweight; the door cover is provided with a pull ring, The opening angle of pulling ring should be more than 60 degrees, no blocking phenomenon, switch should be free and flexible, when the part of the racket door is soaked in water, the internal pressure of the pipe is large, the reverse pressure is small, the flap door allows partial leakage, when the water pressure of the river increases, The shutter automatically closes the seal. Applicable medium: water, river water, sea water, life, industrial sewage, applicable scope: suitable for water conservancy system, municipal sewage, urban flood control and drainage, sewage treatment plant, waterworks, etc.