multi-turn valve

Such valves may be non-rotating poppet valve stem or rotating non-rising stem, or do they need to turn the operation to drive the valve to the open or closed position. Such valves include: through the valve shut-off valve, gate valve, knife gate valve. As an alternative, linear output pneumatic or hydraulic cylinder or diaphragm actuator is also open to drive the valve.pneumatic auto drain
There are currently four types of the implementing agencies, they are able to use a different drive energy, able to operate various types of valves.flange solenoid valve