EN 1491:2022

Building valves - Expansion valves - Tests and requirements

Publication date:   Nov 15, 2022

General information

60.60 Standard published   Jul 20, 2022

CEN

CEN/TC 164 Water supply

European Norm

91.140.60   Water supply systems

Buying

  Published

PDF - €36.30

  English  



Buy

Scope

This document specifies dimensions, materials and performance requirements (including methods of test) for expansion valves, of nominal sizes from DN 15 to DN 32, having working pressures ) from 0,1 MPa (l bar) to 1,0 MPa (10 bar).
Expansion valves are intended for fitting to the cold potable water supply of storage water heaters, having a maximum distribution temperature of 95 °C, for all energy sources.
Expansion valves do not control the temperature and alone do not constitute the protection required for storage water heaters. Expansion valves limit pressure, in the water heaters to what they are fitted, that is produced by thermal expansion of the water.
NOTE The use of the device specified in this document does not override the need to use controls (e.g. thermostats and cut-outs) which act directly on the power sources of water heaters (for more information see Annex A).

Related legislation

Legislation related to this standard

98/83/EC

Quality of water intended for human consumption

Life cycle

PREVIOUSLY

WITHDRAWN
EN 1491:2000

NOW

PUBLISHED
EN 1491:2022
60.60 Standard published
Jul 20, 2022