YSIQ(D) 20 series of intelligent pressure-balanced single-seat control valve uses modular design to achieve a compact structure. Valve plug with balance holes and imported sealing ring together made a special double sealing realized; and make it applicable for high differential pressure occasions in order to meet users’ requirements. Double side usable valve seat and body are connected by pressing method, which effectively improved the valve sealing level and stability; and made usage and maintenance very convenient which greatly improved the general performance of control valve.

Working principle

  The equipped smart positioner will convert to valve required settings when receive normal signal of electricity or signal of computer. Then the pneumatic actuator linear displacement will change to angular displacement by valve special connections, and tested by position transducer then feedback to microprocessor.

  The microprocessor will compare the actual valve feedback with original settings and tested if there is any deviation. It will output pulse width modulation command(PWM) to piezoelectric valve according to the size and direction of deviation. The piezoelectric valve will regulate the input or exhaust gas under the control command.


Structure Drawing




Actuator Specification:

ZM10 series multi-springs pneumatic reinforce actuator, makes the valve realize the conversion of normal close and normal open on site easily, the spring can be effectively protected from the corrosion to prolong the service life of actuator and convenient for customers operation. The actuator and the intelligent valve positioner are connected pipeless to strengthen the anti-seismic performance, stability and precision adjustment, to meet to exactly control of the working conditions.

Air To Open(FC):when the air supply is failed, the actuator spring close the valve

Air To Close(FO):when the air supply is failed, the actuator spring open the valve

Flow Characteristic


Outline Size &Weight

PN16,40 Standard, Fin-Extension, Bellow Sealing Outline Size &Weight

PN64,100 Standard, Fin-Extension, Bellow Sealing Outline Size &Weight

PN16,40 Low-Temp. Type Outline Size &Weight

PN64,100 Low-Temp. Type Outline Size &Weight