1. Electric control valve
Electric control valve is a widely used control valve, which is mainly composed of electric actuator and control valve. It is powered by electricity and drives to change the size of valve switch and adjust the area of fluid path by receiving the signal of controller, so as to change the working conditions parameters such as fluid flow, pressure and temperature.
2. Pneumatic control valve
Pneumatic control valve is a valve powered by compressed air and the signal of the controller regulates the area of the fluid path to change the fluid flow. Pneumatic control valve generally adopts pneumatic diaphragm actuator, so it is also called pneumatic diaphragm control valve. Compared with electric control valve, it does not need to take explosion-proof measures, and has a wide range of applications.
