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  • BSI
    BS EN 1488:2021 - TC Tracked Changes. Building valves. Expansion groups. Tests and requirements
    Edition: 2021
    $529.67
    / user per year

Description of BS EN 1488:2021 - TC 2021

This document specifies, dimensions, materials and performance requirements (including methods of test) for expansion groups, of nominal sizes from DN 15 to DN 25, having working pressures from 0,1 MPa (1 bar) to 1,0 MPa (10 bar). Expansion groups are fitted to the cold potable water supply only for expansion purposes, e.g. of storage water heaters, having a maximum distribution temperature of 95 °C. Expansion groups limit pressure in the water heater to which they are fitted, that is produced by thermal expansion of the water, prevent the backflow of water into the supply pipe and prevent the discharged water to get into contact with the water in the water heater. Expansion groups do not control temperature and alone do not constitute the protection required for storage water heaters. NOTE The use of the device specified in this document does not override the need to use controls (e.g. thermostats and thermal cut-outs) which act directly on the power sources of water heaters (for more information see Annex A).

Standard NumberBS EN 1488:2021 - TC
TitleTracked Changes. Building valves. Expansion groups. Tests and requirements
StatusDefinitive
Publication Date2021-10-07
DescriptorsBuilding services, Water heaters, Flow rates, Cold-water supply systems, Performance, Safety valves, Mechanical testing, Hydraulic tests, Pressure regulators, Safety devices, Thermal expansion, Water supply (buildings), Pressure control, Preferred sizes, Storage water heaters, Dimensions, Check valves, Valves
ICS91.140.65 Water heating equipment, 91.140.60 Water supply systems
CommitteeB/504
ISBN978 0 539 19215 5
PublisherBSI
Pages78

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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