Blog
Industry News
The Difference Between Open Stem Gate Valve and Dark Stem Gate Valve
Sep.22.2020 Tags: COVNA gate valves
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 achieve the lifting of the stem. This structure is beneficial to the lubrication of the valve stem, and the degree of […]