The Pneumatic Scotch Yoke Actuator is a pneumatic actuator designed for 90° rotary valves.

feature

Efficient torque output
The Pneumatic Scotch Yoke Actuator adopts the Scotch-Yoke drive design, which provides greater torque output at the beginning and end of opening and closing, an increase of 20% to 30%.

Fast response performance
Using the high responsiveness of the pneumatic system, the Pneumatic Scotch Yoke Actuator can complete a 90° rotation stroke within 1 second under a 5 bar air source.

Strong structural strength
The center body and cylinder of the Pneumatic Scotch Yoke Actuator are made of ductile iron and high-strength steel. The tensile strength of ductile iron can reach 420 MPa, and the tensile strength of high-strength steel can exceed 600 MPa, ensuring that the actuator has excellent pressure and impact resistance when subjected to high-intensity workloads.

Construction

Centre Body	Ductile Iron
Cylinder Cap	Ductile Iron
Cylinder Body	Steel
Piston	Steel
Yoke	Steel/Ductile Iron
O Rings	Rubber
Spring (spring return model)	Spring steel
Pilot Air Connection	G3/8"-G2" and standard Namur solenoid mounting pad
Fasteners	Stainless steel

Specification

Air supply	3 bar~6bar
Travel Adjustment	90° ± 6°
Operating temperature	-20 ~ +80° C
Type	Double acting, Single acting (spring return)
Optional accessories	Manual override, Limit switch box, Solenoid valve, Air regulator
Application	Either indoor or outdoor

Operation

The compressed air enters the cylinder and pushes the piston to move linearly. The piston, through the piston pin and the fork U-shaped groove design, converts the linear motion of the piston into the rotary motion of the yoke, and the rotation of the yoke drives the output shaft to rotate, thereby realizing the control of the valve.