Manual valve is the most basic drive valve. It includes direct drive by handwheel, handle or wrench and drive by transmission mechanism. When the opening torque of the valve is large, it can be driven by gear or worm gear to achieve the purpose of omission. Gear transmission is divided into spur gear transmission and bevel gear transmission. The gear transmission has a small reduction ratio, which is suitable for gate valves and globe valves, and the worm gear transmission has a relatively large reduction ratio, which is suitable for cock flashes, ball valves and butterfly valves.
Hot tags :single eccentric butterfly valve / butterfly valve standard / Rising Stem Knife Gate Valve /