America - The pneumatic control valve adopts one sort of quarter turn structure which could achieve the proportional controlling by support of the positioner. The pneumatic control valve that applies the V-type spool is the ideal choice for a variety of regulatory situations as it has big rated flow coefficient, good adjustable ratio, good sealing effect, high adjusting sensitivity performance, small size and easily installation. This kind of device is suitable for the controlling of gases, vapors, liquids and other media.

This kind of control valve¡¯s main part is the quarter turning structure. This part has been mainly divided into the V-type valve, actuator, positioner and other annexes; there is an approximately equal percentage inherent flow characteristic ratio.

The piston actuator of the control valve adopts the compressed air as a power source and the movement of the piston crank 90 degrees rotation could help to achieve the automatically open and close of the valve. This part is made up of adjusting screw actuator box, crank, cylinder block, cylinder shaft, piston, connecting rod and universal shaft.

The main working principle of the pneumatic control valve could be concluded into the following information. In general, the pneumatic valve is mainly consisted of the actuator and control agencies. The actuator is the force source of the valve which will generate the corresponding pressure according to the size of the control signal. Then, the pressure will promote the adjustment mechanism action. The spool part is the regulating part of this valve. This part will directly connect with the regulating medium and then adjusting the flow rate of the fluid.

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Shanghai Datian Valve is specialized in wide variety of pneumatic control valve and electric control valve for more than 15 years now. Our quality has features of High quality, stable performance, simple installation and convenient maintenance.

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