scope:

Specifies the characteristics of valves and ancillary equipment made from unplasticized poly(vinyl chloride) (PVC-U) for piping systems in the field of water supply. It also specifies the test parameters for the test methods referred to in this standard. In conjunction with Parts 1 to 3, 5 and 7 of prEN 1452 it is applicable to PVC-U valves and ancillary equipment with components of PVC-U, other plastics and non-plastics materials intended to be used for the following: a) water mains and services buried in ground; b) conveyance of water above ground for both inside and outside buildings, for the supply of water under pressure at approximately 20 °C (cold water) intended for human consumption and for general purposes. Is also applicable to valves and ancillaries for the conveyance of water up to and including 45 °C. For temperatures between 25 °C and 45 °C figure A.1 of prEN 1452-2:1997 applies. Is applicable to tapping saddles and valves of the following types: - valves for solvent cementing;- valves for elastomeric ring seal joints;- valves for flanged joints.