Wedge gate valves are the opening and closing parts of gate valves. The movement direction of the gate valve and the direction of the fluid are vertical. Wedge gate valves can only be fully opened and closed, and are not suitable for adjustment and throttling. Wedge gate valves generally rotate the handwheel up and down through the valve stem to complete the opening and closing of the valve. There are two types of gate valves: open gate valves and closed gate valves. Open the valve stem wedge gate valve, move the valve stem up and down, and fix the valve stem nut. The non rising stem gate valve is fixed by the valve stem, and the upward and downward movement of the valve stem nut has completed opening and closing.
Wedge gate valves can withstand large pressures due to their sealing surface at an angle to the vertical centerline and good sealing. In general, the valve stem of wedge gate valves has good corrosion resistance and scratch resistance after tempering and surface nitriding treatment; The sealing between the gate plate and the valve seat adopts hard alloy surfacing welding, which has the advantages of wear resistance, high temperature resistance, corrosion resistance, good scratch resistance, and long service life; The valve body is made of complete materials, and fillers and gaskets are reasonably selected according to actual working conditions or user requirements, which can be applicable to various pressure, temperature, and medium conditions; The general pressure can reach PN16, and it is widely used in industrial fields such as electric power, petroleum, chemical industry, metallurgy, mining, sewage treatment, etc., especially in equipment for ash removal in power stations and coal washing plants.
