Lined plug valves

Overview: Plug the closure member or plunger shaped rotary valve, passing through 90 degrees of valve plug passage openings and the body on the same or separate oral achieve open or close a valve. Cock valve plug into a cylindrical shape or conical. In the cylindrical valve plug, the channel is generally rectangular; in tapered plug, the channel trapezoidal. These shapes make cock structure becomes light, but also produced a certain loss. Plug the most suitable as cut and connected media and streaming application, but in accordance with the applicable properties and resistance to erosion of the sealing surface, sometimes can also be used for throttling. Since the sealing surface between the plug with a wiping motion effects, can be fully open and in contact with the flowing medium is completely prevented, so it is usually suspended particles can also be used for the dielectric strip. Another important feature when you plug it easy to adapt to multi-channel structure such that a valve may get two, three, or even four different flow paths. This simplifies the design of piping systems, valves reduce the amount of equipment needed and the number of connection fittings.