Quarter-Turn.

  • The Flowserve Limitorque QX, non-intrusive electric actuator is designed for a wide range of environmental applications in power, chemicals, water, oil & gas, and general industries. The QX design builds on more than 20 years of proven MX technology to provide all the user-preferred features in a quarter-turn smart actuator package. 
    Non-Intrusive Quarter-Turn Actuators
  • The Vahn-Tech Series VT-SX Explosion Proof Spring-Return Fail-Safe Electric Actuators in addition to the normal function (floating control, on-off control, modulating control) are designed to provide fail-safe positioning of valves and dampers upon loss of power supply. A mechanical spring set is used to position the controlled device to either the fully OPEN or fully CLOSED position without any external power source. For ON-OFF type, a mechanical buffer is employed at the end of the spring stroke in order to reduce the dynamic effects of the spring return system. A clutch-free manual override is available as an option for standard units to provide full-time manual positioning of the valve.
    Economical Explosion Proof Fail-Safe
  • The Vahn-Tech Series VT-S Spring-Return Fail-Safe Electric Actuators in addition to the normal function (floating control, on-off control, modulating control) are designed to provide fail-safe positioning of valves and dampers upon loss of power supply. A mechanical spring set is used to position the controlled device to either the fully OPEN or fully CLOSED position without any external power source. For ON-OFF type, a mechanical buffer is employed at the end of the spring stroke in order to reduce the dynamic effects of the spring return system. A clutch-free manual override is available as an option for standard units to provide full-time manual positioning of the valve.
    Economical General Purpose Fail-Safe
  • The Vahn-Tech Series VT-OMX Explosion Proof Electric Actuators offer torque ranges from 35 Nm to 1,500 Nm (310 in-lb to 13,280 in-lb). All models are ISO 5211 compliant and are equipped with a visual position indicator. The manual override can be operated without clutch and brake. VT-OMX series explosion-proof quarter-turn electric actuators are structured as flame-proof and combustible dust-proof. The directive and standards marking are II2GD Ex db IIB T4 Gb, Ex tb IIIC T130°C Db. They are classified as Zone 1 or Zone 2, containing Group II A and Group II B gases, Zone 21 or Zone 22, containing combustible dust atmospheres or explosive gas atmospheres and combustible dust atmospheres. Temperature group T1 to T4.
    Economical Explosion Proof
  • The Vahn-Tech Series VT-OM Electric Actuators offer a range of 35 Nm to 4500 Nm torque. The actuator comes standard with NEMA 4X (IP 67) environment rating. All models are ISO 5211 compliant and have a visual position indicator. The manual override can be operated without clutch and brake.
    Economical General Purpose