Phone: +44 1462 480121
Address: Unit 25, Business Centre West,
Avenue One, Letchworth Garden City, Hertfordshire, SG6 2HB
United Kingdom

STL Power & Process Controls – Energy Under Control

Call Us: +44 1462 480121

Quarter-turn Actuators


  • Extruded aluminium body
  • Dual piston rack and pinion design
  • Two independent external travel stop adjustments.
  • Universal and anti-blowout patented drive shaft
  • One compact design with identical body and end caps for double acting and spring return models
  • Multifunction position indicator with Namur slot
  • Electroless nickel-plated blowout resistant bearing guided one-piece pinion
  • Multiple bearings and guides on racks and pistons
  • Modular preloaded spring cartridge design.
  • Fully machined teeth on piston rack and pinion
  • Selected high quality bearings and seals
  • Internal and external stainless steel fasteners

Quarter-Turn actuator

PdfQuarter-Turn actuator