PTB and PTC Series Pull Boxes

PTB and PTC Pull Boxes are installed in conduit systems (typically bridges/refineries) to:

  • Act as pull and splice boxes
  • Protect conductors in threaded rigid conduit
  • Interconnect lengths of conduit
  • Change conduit direction
  • Provide access to conductors for maintenance and future system changes
Box Materials Painted steel; 316L stainless steel; 304 stainless steel
Size Range 12" through 48"
Hub Sizes 1" through 6"
Hub Materials Steel; malleable iron; stainless steel; aluminum
Cover Bolt Material 316L stainless steel
Standard Finish Polyester powder coated over zinc primer


  • More internal cubic capacity for different sized conductors
  • Accurately tapped, tapered threads (NPT) for tight, rigid joints and ground continuity
  • Installed NEMA 4/IP66 gasket included with pull box enclosure (NEMA 4X for stainless steel)
  • PTB - 90° pull boxes; PTC - straight pull boxes

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