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  • BSI
    BS EN 1491:2022 Building valves. Expansion valves. Tests and requirements
    Edition: 2022
    $435.35
    / user per year

Description of BS EN 1491:2022 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).

Standard NumberBS EN 1491:2022
TitleBuilding valves. Expansion valves. Tests and requirements
StatusDefinitive
Publication Date2022-08-23
ReplacesBS EN 1491:2000
Identical National Standard OfEN 1491
DescriptorsStorage water heaters, Safety valves, Water supply (buildings), Valves, Dimensions, Water valves, Water heaters, Mechanical testing, Pressure regulators, Performance, Pressure testing, Pressure control, Hot-water supply systems, Hydraulic tests, Preferred sizes
ICS91.140.60 Water supply systems
CommitteeB/504/-/14
ISBN978 0 539 16288 2
PublisherBSI
Pages28

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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