Scotch Yoke Mechanism

Superior breakaway torque at valve open and close positions — ideal for high-torque applications.

Double Acting (AD)

Air pressure drives both open and close strokes for fast, controlled operation in process automation.

Spring Return (AS)

Fail-safe spring return ensures valve moves to safe position on loss of air supply.

11 Size Range

Available from 50mm to 300mm to match torque requirements across a wide range of valve sizes.

High Breakaway Torque

Scotch yoke geometry provides maximum torque at start and end of stroke where it's needed most.

Quarter-Turn Operation

90° rotation for direct actuation of ball, butterfly and plug valves without additional linkage.

Heavy-Duty Construction

Built for demanding oil & gas, pipeline and offshore environments with robust materials throughout.

ISO 5211 Mounting

Direct-mount ISO 5211 flange for plug-and-play compatibility with standard quarter-turn valves.

NAMUR Interface

NAMUR solenoid valve interface for direct accessory mounting without additional brackets.

Symmetric & Canted Yoke

Both symmetric and canted yoke designs available for optimised torque output profiles.

Competitive Pricing

Cost-effective across the full range — AD50 from £94.71 to AD300 at £5,082.00.

Fast Dispatch

Stock availability across the full AD and AS size range for fast lead times.