It consists of two parts: the actuator (electrical, pneumatic, or hydraulic) and the valve body.

Varies in forms such as remote-controlled ball valves, pressure-reducing valves, slow-closing check valves, and flow control valves, depending on the intended use, function, and location.

1. Manual Operation Type: Levered electric regulator with a handwheel that rotates to drive a lever, which in turn rotates the crank to achieve switch quantity control.

2. Automatic Operation Type: Equipped with a microcomputer intelligent controller for continuous adjustment of on/off quantities through parameter setting.

3. Remote Operation Type: Utilizes computer communication networks to transmit signals to remote computers for automatic control.

4. Multi-program control type: Adjusts the valve opening size under different operating conditions by setting various running parameters.