# HAR 6-77-88 Plastic pipe

- **operation:** document
- **citation:** HAR 6-77-88
- **title:** HAR 6-77-88 Plastic pipe
- **source type:** regulation
- **agency:** Hawaii Public Utilities Commission
- **status:** current
- **official:** true
- **published on:** 1994-04-15
- **effective on:** 1994-09-03
- **summary:** adhesive, or heat fusion may not be disturbed until it has properly set. Plastic pipe may not be joined by a threaded joint or miter joint. (b) Solvent cement joints. Each solvent cement joint on plastic pipe must comply with the following: (1) The mating surfaces of the joint must be clean, dry, an
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**body:**

adhesive, or heat fusion may not be disturbed until it has properly set. Plastic pipe may not be joined by a threaded joint or miter joint. (b) Solvent cement joints. Each solvent cement joint on plastic pipe must comply with the following: (1) The mating surfaces of the joint must be clean, dry, and free of material which might be detrimental to the joint; (2) The solvent cement must conform to ASTM Specification D 2513; and (3) The joint may not be heated to accelerate the setting of the cement. (c) Heat-fusion joints. Each heat-fusion joint on plastic pipe must comply with the following: (1) A butt heat-fusion joint must be joined by a device that holds the heater element square to the ends of the piping, compresses the heated ends together, and holds the pipe in proper alignment while the plastic hardens; (2) A socket heat-fusion joint must be joined by a device that heats the mating surfaces of the joint uniformly and simultaneously to essentially the same temperature; and (3) Heat may not be applied with a torch or other open flame. (d) Adhesive joints. Each adhesive joint on plastic pipe must comply with the following: (1) The adhesive must conform to ASTM Specification D 2517; and (2) The materials and adhesive must be compatible with each other. (e) Mechanical joints. Each compression type mechanical joint on plastic pipe must comply with the following: (1) The gasket material in the coupling must be compatible with the plastic; and (2) A rigid internal tubular stiffener, other than split tubular stiffener, must be used in conjunction with the coupling. [Eff ] (Auth: HRS '269-6) (Imp: 49 C.F.R. '192.281, October 1, 1990)
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