AW Series Pneumatic Actuators (Large Size)
Heavy-duty twin-cylinder scotch-yoke design with high torque for large valves.
Product overview
Large-cylinder AW series double-acting pneumatic actuators use a scotch-yoke mechanism and cover the full AW35-AW60 size range, with standard 90° rotation and custom options. Steel/grey cast iron cylinders and end caps withstand pressure up to 8bar and deliver powerful torque. Multiple seal materials accommodate demanding ambient-, low- and high-temperature conditions.
They support two-position on/off shut-off and modulating control. Connections can be customized, and a complete range of solenoid valves, valve positioners, manual overrides and other automation accessories can be fitted. Suitable for various large-diameter valves, they provide a reliable automation solution for heavy-duty pipelines.
Core technology and operating parameters
| Model | Double-acting AW |
| Sizes and travel | AW35, AW40, AW50, AW60; rotation: 90°, custom |
| Construction | Scotch-yoke drive |
| Connections | Universal, custom |
| Cylinder material | Steel or grey cast iron; end caps: steel or grey cast iron |
| Seal material | Nitrile rubber (standard), silicone rubber (low temperature), fluororubber (high temperature), custom |
| Maximum air supply pressure | 8 bar |
| Action type | Double-acting |
| Control mode | Two-position shut-off (on/off), modulating |
| Optional accessories | Solenoid valve, valve positioner, limit switch, air preparation FRL unit, manual operator, other |
Core construction and design advantages
Scotch-yoke mechanism with high torque output
Multiple AW35‑AW60 sizes with customizable rotation
Steel/grey cast iron cylinder and end caps for high mechanical strength
Choice of seal materials for ambient-, low- and high-temperature service
Air supply working pressure up to 8bar
Double-acting drive with on/off shut-off and modulating control
Universal output interface with custom options
Compatible with a full range of solenoid valves, valve positioners, manual operators and other automation accessories
Integration options
Recommended valves and accessories
Large-size AW series actuators can be combined flexibly with the following valves and control accessories to form a complete automated fluid-control unit.
Pneumatic ball valves
Flanged pneumatic ball valve, DN15~200, for large-size AW double-acting high-torque actuation
Flanged Butterfly Valve
Flanged pneumatic butterfly valve, DN100~800, for large-size AW double-acting high-torque applications
Ventilation Butterfly Valve with Manual Hydraulic Override
Ventilation butterfly valve with manual hydraulic override, DN100~800, for heavy-duty large-diameter ventilation ducts
Ready to upgrade your automated fluid-control system?
Standard or custom solutions for harsh conditions. HES technical team supports your project.