Card sleeve plug valve

The working principle of a sleeve type plug valve is to achieve the opening and closing action by rotating the plug body with the valve stem. Specifically, the sleeve type plug valve uses a plug body with a through-hole as the opening and closing member, and the plug body rotates around the centerline of the valve body to achieve the purpose of opening and closing. The design of the sleeve type plug valve produced by Shanghai Meiyanyi Pump Valve enables the valve to move quickly during opening and closing, with low flow resistance, easy maintenance, and good sealing performance. It is widely used in fields such as petroleum, chemical, natural gas, power plants, metallurgy, and national defense research. The connection and sealing principle is achieved by tightening the nut to apply pressure to the sleeve, causing the blade to bite into the outer wall of the pipe. At the same time, the outer conical surface of the sleeve is tightly fitted with the inner conical surface of the joint, thereby reliably forming a valve seal to prevent leakage.