Low pressure pneumatic control valve

ZJHP-10PLow pressure pneumatic control valveProduct Introduction

A regulating valve, also known as a control valve, changes the fluid flow rate through power operation by receiving control signals from the regulating control unit. A regulating valve is generally composed of an actuator and a valve. If the power used by the actuator is used, the regulating valve can be divided into three types: pneumatic regulating valve, electric regulating valve, and hydraulic regulating valve. In addition, according to its function and characteristics, it can be divided into three types: linear characteristic, equal percentage characteristic, and parabolic characteristic. There are many types of valve bodies for regulating valves, including straight through single seat, straight through double seat, angular, diaphragm, small flow, tee, eccentric rotation, butterfly, sleeve, spherical, etc.

ZJHP-10PLow pressure pneumatic control valveThe principle of

In order to ensure the normal operation of the regulating valve, the accompanying actuator should be able to generate sufficient output force to ensure high sealing and valve opening. For double acting pneumatic, hydraulic, and electric actuators, there is generally no reset spring. The magnitude of the applied force is independent of its direction of operation, therefore, the key to choosing an actuator is to understand the large output force and the rotational torque of the motor. For single acting pneumatic actuators, the output force is related to the valve opening, and the force appearing on the regulating valve will also affect the motion characteristics. Therefore, it is required to establish force balance throughout the entire range of valve opening. After determining the output force of the actuator, select the corresponding actuator according to the requirements of the process usage environment. When there are explosion-proof requirements on site, pneumatic actuators should be selected. From the perspective of energy conservation, electric actuators should be selected as much as possible. If the adjustment accuracy is high, a hydraulic actuator can be selected. Such as speed regulation of transparent machines in power plants and temperature regulation control of catalytic reactors in refineries.