scope:

This Part of ISO 1452 specifies the characteristics of valves 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 standard.
In conjunction with Parts 1, 2, 3 and 5 of ISO 1452 it is applicable to PVC-U valves 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;
c) buried and above ground drainage and sewerage under pressure.
It is applicable to valves in piping systems intended for the supply of water under pressure up to and including 25 °C (cold water) intended for human consumption and for general purposes as well as for waste water under pressure.
This standard is also applicable to valves for the conveyance of water and waste water up to and including 45 °C.
NOTE 1 For temperatures between 25 °C and 45 °C figure A.1 given in annex A of EN 1452-2 applies.
NOTE 2 The possibilities of use for temperatures above 45° C should be defined between the producer and end-user case by case.
This standard is applicable to valves of the following types:
. valves for solvent cementing;
. valves for elastomeric ring seal joints;
. valves for flanged joints.