Internally threaded gate valve, also called cut-off valve, is the most widely used valve and is a forced sealing valve. Its closing principle is to rely on the pressure of the valve stem to make the valve disc sealing surface and the valve seat sealing surface closely fit, preventing Medium circulation. It is divided into several categories in different ways. The internal thread gate valve has the characteristics of simple structure, good sealing performance, large fluid resistance and poor adjustment performance. Overview
The opening and closing part of the internal thread gate valve is a plug-shaped valve disc. The sealing surface is flat or conical, and the valve disc moves along the flow path. The center line moves in a straight line. The movement form of the valve stem includes the lifting rod type (the valve stem lifts and lowers, the handwheel does not rise and fall) and the lifting and rotating rod type (the handwheel rotates and lifts together with the valve stem, and the nut is set on the valve body). The ribbed stop valve is only suitable for all valves. Open and fully closed, no adjustment or throttling allowed.
Thread gate valve Z15W