scope:

This Part of EN 1452 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 test methods referred to in this standard. In conjunction with Parts 1, 2, 3 and 5 of EN 1452 and ENV 1452-7 it is applicable to PVC-U valves and ancillary equipment with components of PVC-U, other plastics and nonplastics materials indented to be used for the following: a) water mains and services buried in ground; b) conveyance of water above ground for both outside and inside buildings, for the supply of water under pressure at approximately 20°C (cold water) intended for human consumption and for general purposes. This standard 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 EN 1452-2:1999 applies.