铸铁拍门的次要装置在排水管道的尾端，用于避免外水倒灌。材质分爲不锈钢、铸铁、型钢、复合资料玻璃钢)等多种资料。而拍门又分爲很多种，比方，浮箱式拍门，平板式拍门，套筒式拍门等等，是装置在江河边排水管出口的一种单向阀，当江河潮位高于出水管口，且压力大于管内压力时，拍门面板自动封闭，以防江河潮水倒灌进排水管道内。目前拍门分爲悬挂式，单节能式双开门节能式双开门,节能型等铸铁拍门型号。
Cast iron flapping door - secondary device at the end of drainage pipe, used to avoid backfilling of external water. Material is divided into stainless steel, cast iron, section steel, composite materials (FRP) and other information. There are many kinds of flapping doors, such as floating box flapping doors, flat flapping doors, sleeve flapping doors and so on. They are one-way valves installed at the outlet of river drainage pipes. When the river tide level is higher than the outlet and the pressure is greater than the pressure in the pipe, the flapping door panel automatically closes to prevent the River tide from pouring into the drainage pipes. At present, the clapping door is divided into hanging type, single energy-saving type, double-opening type and energy-saving type.
标签：铸铁拍门 铸铁拍门厂家
