Pneumatic Rotary Actuator, Single/Double Acting, 8-7500 Nm

Product Name: AT Series Pneumatic Rotary Actuator
Torque Range: 8 Nm to 7500 Nm
Operating Pressure: 3-8 bar
Actuation Type: Single-acting, Double-acting
Stroke Range: 0° to 90°
Ambient Temperature: -20°C to +80°C
Accessories: Solenoid Valve, Limit Switch Box, E/P Positioner, Handwheel
Compatible Valve Types: Ball Valve, Butterfly Valve and other Rotary Valves

The AT Series Pneumatic Rotary Actuator is designed to open, close, or regulate valves using pneumatic pressure, commonly known as a pneumatic actuator or pneumatic head. This type of actuator is essential in controlling the operation of valves, with options for integration with auxiliary devices such as valve positioners and handwheel mechanisms. The valve positioner improves actuator performance through feedback principles, ensuring precise positioning based on control signals. The handwheel mechanism allows for manual control in situations such as power failure, gas outages, or actuator malfunctions, maintaining normal valve operation during these events.

Product Features

» Widely used in ball valves and butterfly valves
» Cost-effective, compact design with a long service life
» Pneumatic actuator types: single-acting (spring return) or double-acting
» Available in a range of colors: orange, blue, black, dark gray (customizable)
» Pneumatic actuator working pressure: 0.3 to 0.8 MPa
» Bottom connection: ISO 5211
» Solenoid valve standard: Namur
» Optional accessories: limit switch box, solenoid valve, positioner

Advantages

The AT Series Pneumatic Rotary Actuator features a double-piston symmetrical structure with rack and pinion design, ensuring fast, stable action, high precision, and large output power. The actuator can be easily reversed by adjusting the assembly position of the piston. Single-acting pneumatic rotary cylinders are constructed with extruded high-quality aluminum alloy, offering hard anodized precision-machined bores and external surfaces for extended durability and reduced friction.

Operation

Upon receiving pneumatic pressure through the air inlet (2), the pistons within the cylinder move, compressing the spring on both ends. This action discharges air through air inlet (4) and drives the shaft in a counterclockwise rotation. When the solenoid valve switches the air supply direction, the spring pushes the pistons toward the center, expelling air from the middle cylinder through inlet (2), which simultaneously drives the shaft in a clockwise rotation. Reversing the piston assembly will cause the shaft to rotate in the opposite direction, enabling a reverse acting configuration for single-acting models.