Drain Valve Classification by Drive Method

(1) Automatic valve refers to a valve that does not require external force to drive, but relies on the energy of the medium itself to make the valve operate. Such as safety valves, pressure reducing valves, drain valves, check valves, automatic regulating valves, etc.
(2) Power driven valve: Power driven valve can be driven by various power sources. The breakdown is as follows:
Electric valve: A valve that is driven by electricity.
Pneumatic valve: A valve driven by compressed air.
Hydraulic valve: A valve that is driven by the pressure of a liquid such as oil.
(3) Manual valve: With the help of a handwheel, handle, lever, and sprocket, the manual valve is manually operated to operate the valve. When the valve has a large opening and closing torque, this wheel or worm gear reducer can be set between the handwheel and the valve stem. If necessary, universal joints and transmission shafts can also be used for remote operation.