HPY scotch yoke pneumatic actuators are fit for turn-off or metering control of 90° valves (such as ball valves, butterfly valves and plug valves). It can realize automatic control of industrial process with various accessories. The principle is that compressed air enters the chamber to push the piston to do linear motion, and by transmission structures of the yoke pin and yoke groove, the piston's linear motion will be converted into the yoke's rotary motion, and drives the output shaft to rotate, thus achieving the control of the valve.
There are two types of HPY scotch yoke pneumatic actuators: symmetrical and inclined, which correspond to two different torque output characteristics. The inclined yoke mechanism, with high starting torque and low operating torque is suitable for butterfly valve control; the symmetrical yoke mechanism, with more balanced torque curve is mainly suitable for ball valve, plug valve control.
Our pneumatic actuators are widely used in petroleum and natural gas, chemical industry, oil refining, pulp and paper making, water treatment, power plants and other industries.
