Rising Stem Gate Valve VS Non-rising Stem Gate Valve
Rising stem gate valves are usually made from cast or forged steel while non rising stem gate valves are more typically brass, bronze or cast iron. Non rising stem valves take up less space and rising stem valves require more space. … If a lot of stem is exposed, the valve is open. According to the structure of the valve stem, the gate valve can be divided into: 1. Rising stem gate valve : the stem nut is on the valve cover or bracket. When opening and closing the gate, the stem nut is rotated to realize the rise and fall of the stem. This kind of structure is advantageous to the lubrication of the valve stem, and the opening and closing degree is obvious, so it is widely used. 2. Non rising stem gate valve: the stem nut is in the valve body, which is in direct contact with the medium. When opening and closing the gate, it is realized by rotating the valve stem. The advantages of this structure are: the height of ...
