STG Conduit Hubs

Allied Tube & Conduit PVC coated STG hubs are used to terminate conduit runs through the wall of a sheet metal electrical enclosure. They are available with or without grounding lug. STTB style hubs are ‘Through-Bulkhead’ fittings used to pass conduit runs through firewalls or bulkheads up to 1/8″ thick. STTTB style hubs perform the same function for unlimited wall thicknesses.

Features

• Exterior PVC coating thickness is a minimum 0.040″
• Interior Urethane coating thickness is a minimum 0.002″
• STG and STTB available in 12 trade sizes from 1/2″ through 6″
• STTTB in sizes from 1/2″ through 2″
• Sealing sleeves on conduit side of hub
• Molded PVC gasket seals flush with enclosure wall
• Neoprene O-ring gasket provides additional seal
• The length of the sleeve extension(s) shall be at least equivalent to the nominal conduit size for sizes 1/2″- 2″
• For sizes 2-1/2″- 6″, the length of the sleeve extension(s) shall be at least 2″

Standards

• UL 514B
• NEC/CEC:
  • Class I, Division 2
  • Class II, Division 1 & 2
  • Class III, Division 1 & 2
  • Class I, Zone 1, AEx e II
  • Class I, Zone 1, Ex e II
• All Screw-tight Hubs are listed for NEMA type enclosures 2, 3, 3R, 4, 4x, 11 and 12
• Grounding and Bonding Hubs are listed for NEMA Enclosures 2, 3, 3R, 4 and 1