Features & Benefits of Patriot Preformed Loops:

  • 15 -Year manufacturer’s warranty on Preformed Loops
  • Factory dimensioned to avoid costly mistakes
  • Factory assembled for number of turns and wire gauge
  • Wires protected by high pressure / temperature conduit
  • Entire conduit injected with water blocking material
  • Rated for direct hot asphalt pave-over
  • Rated for concrete overlay and will compensate for reinforcing steel draw
  • Rated for cut-in without the need of “45-ing” the corners, also the use of a backer rod is not required
  • Rated for temporary above-ground installation

 

Specifications:

Conduit

  • Highly abrasion-resistant Polyurethane alloy cover
  • High tensile strength yarn reinforcement
  • Good flexibility over a wide temperature range
  • Minimum burst pressure of 990 psi (6,826 kPa)
  • Polyurethane alloy core tube
  • o.d. of 5/8” (16 millimeter) Connection: Loop head to loop lead-in
  • High tensile strength Polyvinyl carbonated “T” connector to connect the loop head to the protected lead-in

Wire

  • Loop wire is 16 gauge tffn/thhn stranded single conductor
  • Number of wire turns to be determined by engineer or factory and will depend on loop size, loop depth, presence of reinforcing steel and special factors
  • Lead-in wires are machine twisted at a minimum of 4 twists per foot (30 cm)
  • One continuous wire is used in order to manufacture the loop and lead-in, no splices are used
  • Extra wire shall be incorporated throughout the conduit by means of the “Z” method to compensate for pavement movement

Miscellaneous

  • ENTIRE loop AND lead is filled with a flexible rubber asphalt emulsion to:
    • prevent moisture entering the conduit
    • prevent false calls due to movement of the wire within the conduit
  • Quality control of the end product shall be performed and pass as specified in the Preformed Inductive Loop (P-ILD) Handbook 4 and be submitted to the end user
  • Preformed loop shall have a 15 year warranty
Download Datasheet for Patriot Loops & Detection Systems