XP enclosures

  • L120-10 through -85:
    Nameplated as Class I, Groups B, C, D, Divisions 1 and 2; Class II,Groups E, F, G, Divisions 1 and 2 with FM label. Class I, Groups C, D, Divisions 1 and 2; Class II, Groups E, F, G, Divisions 1 and 2 with CSA label.
    FM and CSA labels available for NCU and standard controls packages
  • L120-190 through -2000:
    Nameplated as Class 1, Groups C and D, Divisions 1 and 2, and
    Class II, Groups E, F and G, Divisions 1 and 2, FM or CSA label.
  • Nameplate material is stainless steel.


  • Local Continuous Position Indication Local position indicator
    shows continuous valve position in percentage open via dial,and is driven by dedicated gear set selected per application.Window in compartment cover shows indicator.
  • Local/Remote Indication Includes local continuous position indicator with a 1000-ohm potentiometer. Potentiometers transmit valve position to remote location.
  • R/I Converter Sends remote valve position indication signal
    via 4-20 mA signal. Internally powered.
  • Relay Boards Provide isolated relays (2) or non-isolated relays (3) for interlocking with field equipment. Relay contacts rated at 250 VAC/6.5 A or 30 VDC/5 A.
  • Handwheel Gear Reduction Bevel gear reductions are
    available for L120-10 through -40, and spur gear reductions are available for L120-190 through 2000.
  • Double-pole Torque Switch Provides an additional SPDT contact in each direction that actuates when set torque is exceeded. Used as indication of over-torque condition.
  • Ductile Iron Housing (L120-10 through -40) Ductile iron for
    load-carrying components.
  • Spring Compensation (L120S) (L120-190 through -2000)SB-type spring-compensated stem nut used on high-speed or high-temperature, torque-seated applications.
  • Position Feedback for DDC Communicates valve position to remote location via DDC network. Includes local position
    indication, 1000-ohm potentiometer and DDC analog channel. Used with DDC base actuator.
  • External Analog Feedback for DDC Allows external analog signals to be connected to DDC field unit, converted to
    digital signals and transmitted over DDC network. Four signals may be accommodated. Includes DDC analog channel. Used with DDC base actuator.
  • Positioning Control for DDC Permits positioning of valves
    over DDC network. Positioning commands valve to any
    point of travel, in 1% increments. Includes local position
    indication, 1000-ohm potentiometer and DDC analog
    channel. Used with DDC base actuator.
  • Two-speed Operation for DDC Allows the actuator to be
    pulsed on and off, achieving slower operating speed for all
    or part of valve stroke. Default pulse rate is 2 seconds on,
    10 seconds off, adjustable from 50 ms to 12.75 seconds
    in 50-ms increments. Configured via RS-232 link and
    dedicated software.
  • UEX Electronic Control Package The UEX replaces the
    UEC-3 with MX technology-based control functionality. The
    absolute encoder provides position indication and control.
    Setup is achieved through the LCD display, providing status
    and fault indication in 11 languages. The UEX offers network
    control via Modbus, Foundation Fieldbus, Profibus DP,
    Profibus PA or DeviceNet.

Testing summary

Weatherproof enclosures meet NEMA 4, NEMA 4X and IP67.
Submersible actuators are suitable for NEMA 6 and IP68.Explosion-proof enclosures fully conform to and are certified
to be compliant to the following:

  • Factory Mutual (FM) Class I, Divisions 1 and 2, Groups
    B, C and D, and Class II, Divisions 1 and 2, Groups E, F, G;
    Temp Code T3C
  • Canadian Standards Association (CSA) Class I, Division 1,
    Groups C and D, and Class II, Division 1, Groups E, F and G;
    Temp Code T3C

Limitorque’s factories are certified to ISO 9001 standards
and maintain the highest quality of performance throughout
the manufacturing processes.

L120 actuators meet the following seismic and vibration
criteria: NTS Labs, Acton, MA, Test Report #31437-94M
dated 3/28/94 to the following:

  • Sine survey; 5 to 200 Hz @ 0.75 g
  • Sine cycling; 5 to 200 Hz to 5 Hz @ 0.75 g
  • Sine cycling; 2 to 35 to 2 Hz @ 1.0 g; 10 cycles
  • Sine dwells; 2 to 35 to 2 Hz @ 1/3-octave intervals, 5.0 g @ 15-second dwells each frequency

NOTE: Standards are applicable to most actuators.


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