Harrington Industrial Plastics



PVC is the most commonly used plastic material for manufacturing plastic pipe. It has a relatively high tensile strength and modulus of elasticity and, therefore, is stronger and more rigid than most other thermoplastics. Joining methods are by solvent cementing, threading (Schedule 80 only) or flanging. PVC has been used successfully in such areas as chemical processing, industrial plating, chilled water distribution, salt water, chemical drainage, and irrigation systems. Pressure ratings given are for solvent-cemented systems. When adding valves, flanges or other compo¬nents, the system must be derated to the rating of the lowest component: threaded fittings are rated at 50% of solvent cement systems; flanged fittings are rated at 150 psi; union fittings are rated at 235 psi. See manufacturers' recommendations for other ratings.

  • Type 1, Grade 1 (Cell Class 12454-B) meets ASTM D-1784
  • Approved by National Sanitation Foundation (NSF) for use with potable cold water
  • Meets ASTM D-2464 (threaded fittings)
  • PTFE tape required for threaded fittings to prevent galling of threaded fittings and is necessary for leak-tight threaded joints
  • Meets ASTM D-2467 (socket fittings)
  • Gray in color
  • Fittings carry a pressure rating different from the pipe. Contact Harrington for specific pressure recommendations

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