The Trimteck OpTK Rotary Piston-Cylinder Actuator combines high torque and pneumatic stiffness with excellent throttling capabilities. These characteristics are designed into a lightweight, rugged and compact assembly.

The actuator and cylinder are designed for supply pressures up to 150 psi, enabling very high torques. The actuator uses a rocking piston for direct conversion of linear motion to rotary motion – thrust to torque. The rocking piston assembly combined with a splined shaft and lever eliminates lost motion giving the OpTK extraordinary precision and resolution.

Accepts up to 150 psi air supply

• Achieves higher torques
• Obtains stiff piston positioning
• Permits higher DP limits on valve

Rocking piston

• Provides direct connection to shaft
• Assures zero lost motion between actuator and valve
• Utilizes fewer parts

Splined shaft and lever

• Allows zero lost motion

Compact, lightweight, rugged

• Permits easy maintenance
• Installs in limited space applications
• Easily meets seismic requirements

Low friction bearings

• Provide millions of cycles with minimal wear
• Combined with direct linkage, provides very low hysteresis

Field reversible

• Requires no extra parts
• Permits fast, easy field reversing
• Requires no change of spring action

Fail-safe spring

• Moves actuator to failure position without pressure assistance

Air-purged, fully enclosed transfer case

• Prevents corrosion of linkage
• Ensures safe operation
• Contains external position indicator
• Allows four mounting positions without retubing, changing or adding parts

Stroke stops

• Allow both ends of stroke to be adjusted