The Type 3271 pneumatic diaphragm actuator, designed for industrial use, is suitable for valve sizes from micro-flow to large 20"+ globe control valves. It offers linear motion with thrust force varying by several factors including pneumatic pressure and spring characteristics. Its field-reversible, multi-spring design allows for fail-safe action changes, ensures uniform force application, and reduces valve height and weight. The actuator, with its 360­° rotatable positioner, facilitates easy local operation, while its rolling diaphragm enhances precision and minimises hysteresis.

The Type 3273 hand-operated actuator, designed for linear motion control valves, is available in both top-mounted and side-mounted wheel versions, catering to different valve sizes and required forces. It features a straightforward connection to the control valve and includes a locking mechanism to secure the valve stem position, preventing unintended adjustments.

The Type 3274 electro-pneumatic actuator is tailored for a broad range of industrial uses. It facilitates linear motion, fitting valve sizes up to 6" globe control valves, with thrust output capped by model. It transmits power efficiently over long distances, suits low ambient temperatures, and is compact, with optional electric or mechanical override. Safety is ensured through motor deactivation upon reaching end positions or during overload. A fail-safe option is available for versions with electric override.

The Type 3277 pneumatic diaphragm actuator is designed for diverse industrial applications. It's a linear motion device suitable for valves up to 4" globe control valves, with thrust force depending on various factors including actuator area and pneumatic supply pressure. It features an integrated accessory attachment area, eliminating the need for tubing and ensuring a precise mechanical connection. Its field-reversible, multi-spring design allows for easy operation adjustment and reduced actuator height and weight. The rolling diaphragm ensures enhanced precision and minimal hysteresis.

The Type 3372 pneumatic diaphragm actuator, designed for V2001 and 3522 control valves in light industrial applications, incorporates an integral I/P converter or direct attachment of an electro-pneumatic 3725 positioner. This linear motion device, suitable for 1/2" to 4" globe control valves, offers precise control with its multi-spring design that evenly distributes force, thereby reducing height and weight. It features a 360­° rotation for easy operation, a rolling diaphragm for enhanced precision and reduced hysteresis, and an integral accessory attachment for streamlined connections.

The Type 3374 electric actuator is tailored for industrial use, offering linear motion ideal for valve sizes up to 6" globe control valves. Its design is compact and simple, ensuring compatibility with similar valve designs. It's more efficient in power transmission over long distances than pneumatic and hydraulic systems and suits low ambient temperatures. Features include torque-dependent limit switches to halt the motor, preventing overload, with a thrust capability up to 2.5 kN, and an option for fail-safe action with electric override.