DSF/prEN 1491 ( Draft )

Building valves – Expansion valves – Tests and requirements


Status:
Draft
Type:
Standard
Language:
English
Revision of:
Price from:
€ 38.19

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).


Number of pages: 25

International relationships : prEN 1491 IDT

ICS: 91.140.60 - Water supply systems

Item number: M347089


Committees

Committee

  • CEN/TC 164
  • CEN/TC 164/WG 14

Danish committee

DS/S-314