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The single-acting scotch yoke pneumatic actuator is mainly used in the occasion of single-acting high-torque valves, providing a torque output of 500NM-70,000NM, which can realize the function of quick opening and closing.
Compressed air enters the cylinder, pushes the piston to make linear motion, and the piston uses the piston pin and the fork U-groove design to convert the linear motion of the piston into the rotary motion of the fork, and the fork rotation drives the output shaft to rotate, so as to realize the control of the valve.
According to the different types of action, it can be divided into single-acting fork pneumatic actuator and double-acting fork pneumatic actuator. The switching action of the actuator is completed by air source drive, which is a double-acting scootch fork pneumatic actuator; Only the opening action is completed by the air source drive, and the closing action is a single-acting fork pneumatic actuator as a spring return.
According to the different structures, it can be divided into single-cylinder piston type and double-cylinder piston type.
According to the different main materials, it can be divided into aluminum alloy type, stainless steel type, carbon steel type, etc.
| Rotation angle | 0°~ 90° |
| Output torque | Double action: 600~260000Nm Spring restoration: 600~100000Nm |
| Operating pressure | Pneumatic drive: 0.3~0.7Mpa Hydraulic drive: 20Mpa |
| Operating temperature |
Standard-20ºC~+80ºC |
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