The Tork-Mate® 890 series, extended-life actuators are ideal for the operation of 90°-turn devices such as butterfly valves, ball valves, plug valves, damper valves, and other devices. Tork-Mate pneumatic actuators have features that are unique, providing many benefits to the user looking for worry-free service.
  • TMHC 2324
    A proprietary two-step, hardcoat process that offers superior protection on interior and exterior housing surfaces, TMHC 2324 also ensures maximum life from the piston seals, piston bearings, and heel bearings.
  • NAMUR Mounting
    Tork-Mate 890 series actuators meet the latest NAMUR standards, allowing direct or close coupling of NAMUR-designed accessories. The pinion interface features a positive, international standard drive for positioners, switches, and other accessories. The solenoid interface allows direct acceptance of any NAMUR-designed control valves.
  • Modular
    Easily removable end caps and modular spring packs simplify the conversion from double-acting to spring-return configurations.
  • Travel Adjustment
    The Tork-Mate 890 series actuators feature pinion travel stops that allow a full ±100 of valve travel adjustment. As an option, extended-stroke adjustment screws can be added for inexpensive throttling applications.
  • Extended Cycle Life
    Special piston seals provide greatly extended life compared to standard O-ring actuators. All other bearings, seals, and components have been engineered to provide superior and extended service lives.
  • Blow-out Proof Pinion Gear
    In addition to the stainless-steel pinion retaining ring, the Tork-Mate 890 series actuators feature a unique, internal safety bar.
  • Operating Ranges
    Tork-Mate 890 series, double-acting actuators produce guaranteed minimum torque outputs up to 17,466 inch/pounds (1973 Nm).
  • Imperial or Metric Mounting
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Item #

Inboard Volume

Approx. Weight

Spring Set

Spring Torque Output (Start)

Spring Torque Output (End)

Max. Operating Pressure

253-SR-2 N/A 167 cm³ N/A 3.5 kg N/A 2 N/A 7 N·m N/A 5 N·m N/A 8.6 bar
253-SR-3 N/A 167 cm³ N/A 3.5 kg N/A 3 N/A 10 N·m N/A 7 N·m N/A 8.6 bar
253-SR-4 N/A 167 cm³ N/A 3.5 kg N/A 4 N/A 14 N·m N/A 9 N·m N/A 8.6 bar
253-SR-5 N/A 167 cm³ N/A 3.5 kg N/A 5 N/A 17 N·m N/A 11 N·m N/A 8.6 bar
253-SR-6 N/A 167 cm³ N/A 3.5 kg N/A 6 N/A 21 N·m N/A 14 N·m N/A 8.6 bar
453-SR-2 N/A 315 cm³ N/A 5.1 kg N/A 2 N/A 13 N·m N/A 9 N·m N/A 8.6 bar
453-SR-3 N/A 315 cm³ N/A 5.1 kg N/A 3 N/A 20 N·m N/A 13 N·m N/A 8.6 bar
453-SR-4 N/A 315 cm³ N/A 5.1 kg N/A 4 N/A 27 N·m N/A 17 N·m N/A 8.6 bar
453-SR-5 N/A 315 cm³ N/A 5.1 kg N/A 5 N/A 34 N·m N/A 21 N·m N/A 8.6 bar
453-SR-6 N/A 315 cm³ N/A 5.1 kg N/A 6 N/A 40 N·m N/A 26 N·m N/A 8.6 bar
1003-SR-2 N/A 695 cm³ N/A 8.6 kg N/A 2 N/A 32 N·m N/A 21 N·m N/A 8.6 bar
1003-SR-3 N/A 695 cm³ N/A 8.6 kg N/A 3 N/A 48 N·m N/A 31 N·m N/A 8.6 bar
1003-SR-4 N/A 695 cm³ N/A 8.6 kg N/A 4 N/A 64 N·m N/A 42 N·m N/A 8.6 bar
1003-SR-5 N/A 695 cm³ N/A 8.6 kg N/A 5 N/A 80 N·m N/A 52 N·m N/A 8.6 bar
1003-SR-6 N/A 695 cm³ N/A 8.6 kg N/A 6 N/A 97 N·m N/A 62 N·m N/A 8.6 bar
2253-SR-2 N/A 1558 cm³ N/A 16.1 kg N/A 2 N/A 75 N·m N/A 45 N·m N/A 8.6 bar
2253-SR-3 N/A 1558 cm³ N/A 16.1 kg N/A 3 N/A 112 N·m N/A 67 N·m N/A 8.6 bar
2253-SR-4 N/A 1558 cm³ N/A 16.1 kg N/A 4 N/A 150 N·m N/A 89 N·m N/A 8.6 bar
2253-SR-5 N/A 1558 cm³ N/A 16.1 kg N/A 5 N/A 187 N·m N/A 111 N·m N/A 8.6 bar
2253-SR-6 N/A 1558 cm³ N/A 16.1 kg N/A 6 N/A 224 N·m N/A 134 N·m N/A 8.6 bar
5003-SR-2 N/A 2989 cm³ N/A 27.6 kg N/A 2 N/A 184 N·m N/A 93 N·m N/A 8.6 bar
5003-SR-3 N/A 2989 cm³ N/A 27.6 kg N/A 3 N/A 277 N·m N/A 140 N·m N/A 8.6 bar
5003-SR-4 N/A 2989 cm³ N/A 27.6 kg N/A 4 N/A 370 N·m N/A 186 N·m N/A 8.6 bar
5003-SR-5 N/A 2989 cm³ N/A 27.6 kg N/A 5 N/A 462 N·m N/A 232 N·m N/A 8.6 bar
5003-SR-6 N/A 2989 cm³ N/A 27.6 kg N/A 6 N/A 555 N·m N/A 280 N·m N/A 8.6 bar
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