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Metso ST115MS, ST Pneumatic Actuator, Spring-Return

Item #: ST115MS

Product Info


ST-MS Spring-Return Actuator, -20°F to +180°F Operating temperature range, 150 psi Maximum supply pressure, Typical Operating Speed 8 seconds Features: • ST-MS models are ideal for both on-off and control applications, while the economical SL model is a quick-acting low-maintenance actuator designed for opening and closing small ball valves. • Models are rated to 150 psi (10 bar.) • Spring-return type ST-MS actuators can provide spring-to-open or spring-to-close operation for ball valves or spring-to-close operation for butterfly valves. • They are available in two classes. One is for systems with minimum supply pressures of 60 psi (4 bar), and the other for systems with 90 psi (6 bar) minimum. • Corrosion Resistant: Aluminum body and endcap. • Low Maintenance: Springs are enclosed in a self-contained cartridge for added reliability and easy maintenance. Actuators are lubricated at the factory. No further lubrication required. • Externally Adjustable Travel Stops: Adjustable travel stops are standard for both the open and closed position.They allow adjustment of the angular stroke from 85° to 110°. Stop screws are protected from accidental changes in setting by acorn nuts.

Item Specifications

  • Spring Return
  • 60 psi
  • 1380 in-lb @ 60 psi
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Available Now UOM : EA