Cast steel gate valves open and close of components is a gate. Gate in the direction perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, and cannot adjust and throttling. The gate has two seal face. Common mode two sealing surfaces appear wedge gate valve, wedge Angle change according to the valves parameters, usually to 50, not 2 ° - medium temperature 52 '. Wedge gate valve gate can be made into a whole, known as the rigid gate; It also can be made into can produce a small amount of deformation of the gate, and to improve its machinability and sealing surface Angle of deviation in the manufacturing process of compensation. The board is called elastic shutters.

define cast steel gate valves: all gate valves are cast metal casting and foundry casting gate. Correspond to cast steel gate valves, it also has a cast iron gate valves, forged steel gate and malleable cast iron gate valves. Classification of cast steel gate valve cast steel gate valves, steel gate, stainless steel gate, low alloy steel gate ( High temperature resistant chrome molybdenum steel belongs to the category) , low temperature steel gate valves, etc. Under all kinds of cast steel gate valves have different specific steel grade, respectively is a common has the following kinds: carbon steel gate valve casting brand has: WCA, WCB, WCC, LCB, etc. ; Suitable temperature - 46 degrees - 425 degrees. Stainless steel Industrial Valves casting level: 301 stainless steel, stainless steel (CF8 Corresponding to the 304 stainless steel forging) , CF8M stainless steel ( Corresponding to the 316 stainless steel forging) And so on; Suitable temperature for - A 198 - degree - 816 degrees. Low alloy steel are divided into high temperature alloy steel and high strength low alloy steel, high temperature alloy steel is commonly referred to as chrome molybdenum steel. Level of chrome molybdenum steel gate valve casting: ZG1Cr5Mo, ZG15Cr1MoV, ZG20CrMoV, WC6, WC9, C12A, etc. Suitable temperature is 550 degrees to 750 degrees. Applies to each particular grade material temperature according to the actual working conditions.

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