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

250-SR-2 N/A 10.2 in³ N/A 7.7 lb N/A 2 N/A 61 in·lb N/A 40 in·lb N/A 125 psi
250-SR-3 N/A 10.2 in³ N/A 7.7 lb N/A 3 N/A 92 in·lb N/A 59 in·lb N/A 125 psi
250-SR-4 N/A 10.2 in³ N/A 7.7 lb N/A 4 N/A 124 in·lb N/A 80 in·lb N/A 125 psi
250-SR-5 N/A 10.2 in³ N/A 7.7 lb N/A 5 N/A 155 in·lb N/A 99 in·lb N/A 125 psi
250-SR-6 N/A 10.2 in³ N/A 7.7 lb N/A 6 N/A 185 in·lb N/A 120 in·lb N/A 125 psi
450-SR-2 N/A 19.2 in³ N/A 11.3 lb N/A 2 N/A 118 in·lb N/A 76 in·lb N/A 125 psi
450-SR-3 N/A 19.2 in³ N/A 11.3 lb N/A 3 N/A 179 in·lb N/A 114 in·lb N/A 125 psi
450-SR-4 N/A 19.2 in³ N/A 11.3 lb N/A 4 N/A 239 in·lb N/A 152 in·lb N/A 125 psi
450-SR-5 N/A 19.2 in³ N/A 11.3 lb N/A 5 N/A 298 in·lb N/A 190 in·lb N/A 125 psi
450-SR-6 N/A 19.2 in³ N/A 11.3 lb N/A 6 N/A 358 in·lb N/A 229 in·lb N/A 125 psi
1000-SR-2 N/A 42.4 in³ N/A 18.9 lb N/A 2 N/A 285 in·lb N/A 183 in·lb N/A 125 psi
1000-SR-3 N/A 42.4 in³ N/A 18.9 lb N/A 3 N/A 427 in·lb N/A 276 in·lb N/A 125 psi
1000-SR-4 N/A 42.4 in³ N/A 18.9 lb N/A 4 N/A 571 in·lb N/A 368 in·lb N/A 125 psi
1000-SR-5 N/A 42.4 in³ N/A 18.9 lb N/A 5 N/A 712 in·lb N/A 459 in·lb N/A 125 psi
1000-SR-6 N/A 42.4 in³ N/A 18.9 lb N/A 6 N/A 856 in·lb N/A 551 in·lb N/A 125 psi
2250-SR-2 N/A 95.1 in³ N/A 35.5 lb N/A 2 N/A 661 in·lb N/A 395 in·lb N/A 125 psi
2250-SR-3 N/A 95.1 in³ N/A 35.5 lb N/A 3 N/A 993 in·lb N/A 592 in·lb N/A 125 psi
2250-SR-4 N/A 95.1 in³ N/A 35.5 lb N/A 4 N/A 1325 in·lb N/A 790 in·lb N/A 125 psi
2250-SR-5 N/A 95.1 in³ N/A 35.5 lb N/A 5 N/A 1655 in·lb N/A 987 in·lb N/A 125 psi
2250-SR-6 N/A 95.1 in³ N/A 35.5 lb N/A 6 N/A 1987 in·lb N/A 1185 in·lb N/A 125 psi
5000-SR-2 N/A 182.4 in³ N/A 60.8 lb N/A 2 N/A 1633 in·lb N/A 824 in·lb N/A 125 psi
5000-SR-3 N/A 182.4 in³ N/A 60.8 lb N/A 3 N/A 2450 in·lb N/A 1239 in·lb N/A 125 psi
5000-SR-4 N/A 182.4 in³ N/A 60.8 lb N/A 4 N/A 3277 in·lb N/A 1649 in·lb N/A 125 psi
5000-SR-5 N/A 182.4 in³ N/A 60.8 lb N/A 5 N/A 4093 in·lb N/A 2058 in·lb N/A 125 psi
5000-SR-6 N/A 182.4 in³ N/A 60.8 lb N/A 6 N/A 4910 in·lb N/A 2478 in·lb N/A 125 psi
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