rising stem valve：Rising Stem Valves - Ball, Gate

Rising stem valves provide a stem that rises or falls as the valve opens or closes. This means that the actuation system converts rotational motion into linear movement of the valve stem when it is in operation. So, unlike its non-rising counterpart, the valve stem in this design indicates the position of the valve disc. In this article, we will review a rising stem gate valve, a rising stem ball valve, a rising stem globe valve, and compare the rising stem valve vs. its non-rising counterpart.

Rising Stem Gate Valve

Generally, gate valves serve to start or stop flow, rather than regulate it. As a result, the valve disc is completely removed from the flow path when in the open position, which minimizes pressure drop. But when in a completely closed position, there is no flow and no pressure drop.

This feature makes it the go-to option in isolation applications, especially in large-diameter and high-pressure lines. The rising stem gate valve has its thread e...