BSI 21/30430852 DC:2021 Edition

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BS EN 1491. Building valves. Expansion valves. Tests and requirements

Published By	Publication Date	Number of Pages
BSI	2021	26

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Categories: 91.140.60 - Water supply systems, BSI

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Description

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).

Additional information

Status	Definitive
Pages	26
Publication Date	2021-02-15
Standard Number	21/30430852 DC
Title	BS EN 1491. Building valves. Expansion valves. Tests and requirements
Identical National Standard Of	prEN 1491
Descriptors	Hydraulic tests, Hot-water supply systems, Water valves, Water supply (buildings), Dimensions, Pressure control, Pressure regulators, Water heaters, Performance, Safety valves, Valves, Preferred sizes, Pressure testing, Mechanical testing, Storage water heaters
Publisher	BSI
Committee	B/504
ICS Codes	91.140.60 - Water supply systems

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BSI 21/30430852 DC:2021 Edition

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