Search form

    T&B Liquidtight Systems® – CSA Heavy Duty Liquid-tight Flexible Metal Conduit and Fittings

  • May 17, 2021

    The Canadian Electrical Code stipulates that liquid-tight flexible metal conduit and connectors used in hazardous location applications (Class I, Division 2; Class II; Class III or Zones 2, 20, 21, 22) be marked Heavy Duty as per applicable CSA standard.

    The T&B Liquidtight Systems offering now includes a full range of liquid-tight flexible metal conduits and connectors that meets the CSA Heavy Duty certification.

    • Tension: Tested to 500 lbf - 66% greater force applied versus standard CSA and UL testing
    • Cold Flexibility: Placed in a freezer for 4 hours, 300% longer cold exposure and then wrapped around a smaller mandrel with a 30-37% tighter bend radius.
    • Connector Compatibility: Pulling force of 350 lbf – 133% greater force applied versus UL testing
    • Crush – Excellent crush strength: Meets the same tough standards as UL, 1,500 – 2,000 lbf - depending on conduit diameter


    Below conduits have passed the rigorous testing requirements of CSA Standard C22.2 No.56-17 Annex A "Heavy Duty” and can now be used in Hazardous location applications.

    Type LTGC – CSA Certified – FT4 Rated
    Type LTTU – CSA Certified High-Low Temperature Conduit
    Type LTZU – CSA Halogen Free, Low smoke and Low Flame Spread conduit
    Type LTFU – CSA Food & Beverage. NSF certified
    Type LTGU – CSA Certified and UL Listed
    Type LTBU – Computer Blue Applications

    Similarly, T&B Liquidtight fittings have passed the rigorous testing requirements of CSA Standard C22.2 No.18.3-12 Annex D "Heavy Duty” and can be used in conjunction with above conduits for a full Heavy Duty solution.

    Series 5200 / 5300 Steel Fittings
    Series 5200 / 5300 Grounding Steel Fittings

    Check out the Heavy-Duty section of our T&B Liquidtight Systems brand page for detailed technical specs of each of our conduits and connectors.


    August 17, 2021 to August 18, 2021
    September 29, 2021 to September 30, 2021
    November 02, 2021 to November 03, 2021
    May 04, 2022 to May 05, 2022
  • EL Newswire

    Electricalline Newswire

    Keep up-to-date with the latest news affecting your industry, personnel appointments, career opportunities, upcoming events and new product launches by subscribing to EL Newswire.

    Email Address: