Gate valve has a small fluid resistance, applicable pressure, temperature range, etc., is a commonly used cut-off valve, used to cut off or connect the medium in the pipeline. Through diameter shrinkage can make parts size reduction, open and close the force required to reduce, while expanding the application range of parts. However, the contraction of the passage diameter, fluid resistance loss increases. Domestic low-pressure gate valve is commonly used in cast iron materials, cast iron gate valve often occur in the body of the valve frost crack, gate off and other serious problems, cast iron gate valve carbon steel stem easy to rust, packing gasket quality is poor, internal and external leakage is serious. The low pressure carbon steel gate valve of PN10 produced by Shanghai Hugong Valve Factory replaces the traditional iron gate valve, which effectively solves the problems of cast iron gate valve shell easy to freeze and crack, gate plate easy to fall off, stem easy to rust, unreliable sealing performance, etc.
1, light weight: the body is made of high-grade ductile black cast iron, the weight is about 20%-30% lighter than the traditional gate valve, easy to install and maintain.
2、Integrated rubber: The gate adopts high quality rubber for overall internal and external rubber covering, European rubber vulcanization technology makes the gate after vulcanization can ensure the precise geometry, and the rubber and ductile cast iron gate is firmly attached, not easy to fall off and good elastic memory.
3、Flat bottom gate seat: traditional gate valve is often in the water wash pipe that is due to foreign objects such as stones, wood, cement, iron, debris, etc. siltation in the groove of the bottom of the valve, easy to close the tight and form a leak, resilient seat seal gate valve bottom with the same flat bottom design of the water pipe machine, not easy to cause debris siltation, so that the fluid flow unimpeded.
4, precision casting valve body: the valve body is precision casting, the precise geometry makes the valve body without any finishing to ensure the valve sealing.