Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure. Unplasticized poly(vinyl chloride) (PVC-U) - Fittings1 Scope This part of ISO 1452 specifies the characteristics of fittings made from unplasticized poly(vinyl chloride) (PVC U) for piping systems intended for water supply and for buried and above ground drainage and sewerage under pressure. It also specifies the test parameters for the test methods referred to in this part of ISO 1452. In conjunction with ISO 14521, ISO 14522 and ISO 14525, it is applicable to PVC U fittings and to joints with

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