1.1 This specification covers poly(vinyl chloride) (PVC) Schedule 80 pipe fittings. Included are requirements for materials, workmanship, dimensions, and burst pressure. Note 1CPVC plastic pipe fittings, which were formerly included in this standard, a This specification covers the requirements for materials, workmanship, dimensions, and burst pressure of poly(vinyl chloride) plastic Schedule 80 pipe fittings, intended for use with the distribution of pressurized liquids that are chemically compatibl