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BSI BS EN 1491:2022

Building valves. Expansion valves. Tests and requirements
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BSI BS EN 1491:2022

Building valves. Expansion valves. Tests and requirements

PUBLISH DATE 2022
PAGES 28
BSI BS EN 1491:2022
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).
SDO BSI: British Standards Institution
Document Number EN 1491
Publication Date Aug. 23, 2022
Language en - English
Page Count 28
Revision Level
Supercedes
Committee B/504/-/14
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