Warren-Morrison TGL/ TGW Series Butterfly Valve

Warren-Morrison Scotch Yoke SD/ SS Series Pneumatic Actuator

The S Series Scotch Yoke Pneumatic Actuator delivers high-torque, reliable performance for quarter-turn applications. Available in single-acting (fail-safe) and double-acting configurations, it is designed for rugged, long-term operation in demanding industrial environments, with flexibility for customisation on-site.

Why Choose the S Series?

  • Modular & Customisable – Easily adjust fail position, fail safe position and add manual override directly on-site.
  • Durable Construction – Epoxy-coated ductile iron and carbon steel body ensures maximum strength and corrosion resistance as a standard. With other coating available as options.
  • Compact & Powerful – Space-saving design delivers extremely high torque outputs for demanding applications.
  • Clear Valve Feedback – Gradual scale indicator provides instant, accurate position monitoring.
  • Global Compatibility – ISO 5211 / DIN 3337 bottom mounting and VDI/VDE 3845 NAMUR top mounting for seamless integration.
  • Versatile & Adaptable – Various coatings, materials and adaptors available to suit different environments, temperatures and valve types. The centre body is pre-drilled from both sides for ease of mounting accessories to suit customer installation needs.
  • Advanced Safety Features – Spring return module includes locking nut; integral travel stops adjustable by ±5°.
  • Smooth & Reliable Operation – Self-lubricating bearings prevent metal-to-metal contact, reducing wear and maintenance.
  • Weather-Proof – IP67 rated for protection against dust and water ingress.

The SD/ SS Series combines strength, precision and flexibility—offering a powerful, reliable solution for high-torque valve automation.