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 the 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 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 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.
This standard 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.