The selection of valve manufacturing materials according to different circulating media and different use environments has become the consensus of many valve manufacturers, but there are certain differences in the material selection of knife gate valves. Due to their own functions and properties, carbon steel and stainless steel will be used as the main manufacturing materials in most cases, rathe…

Forged steel ball valve refers to various forgings and forgings produced by forging methods. The quality of forged steel ball valve is higher than that of cast steel ball valve, it can withstand large impact force, and its plasticity, toughness and other mechanical properties are also higher than that of cast steel parts, so all important machine parts should use forged steel parts.…

Torque calculation of forged steel ball valve…

The three-piece forged steel ball valve divides the valve body into three parts along a cross-section perpendicular to the axis of the valve passage with two valve seats, and the whole valve is symmetrical along the central axis of the valve stem. The three-piece forged steel ball valve is used for pipeline interruption. and distribution.…

The flat gate valve has two floating valve seats. Each seat is designed to be sealed when the medium flows in both directions. Therefore, the flat gate valve can not only achieve two-way sealing, but also realize the simultaneous sealing of the inlet and outlet.…

Expansion type double gate plate gate valve is suitable for chemical, petroleum, natural gas, power plant, coal mine, construction, steel, light industry and sewage treatment industries. Because there are often hard particles and fibrous dirt and other objects in the medium, the valve can play an excellent role as an opening and closing device in the pipeline system. Its driving methods include ma…

a parallel single-gate gate valve without diversion holes. The valve adopts the valve seat to float downstream, the spring preloads the automatic sealing structure, the opening and closing force is small, the higher the working pressure, the better the sealing performance. The seal is provided with a sealing grease injection mechanism. Mainly made of carbon steel, stainless acid-resistant steel, a…

Axial-flow check valve should have a streamline shape on the surface of the inner cavity of the valve body, the diversion cover, the valve flap and other flow surfaces, with a rounded front and a sharp back. The fluid is mainly on its surface as layer flow, and there is no or rarely turbulence.…