British Standards Institution

Sector: Construction

Overview: Resonsible for the development and maintenance of standards for control and safety devices for use in drinking water systems, and for devices used in the protection of the water supply from backflow along with guidance on selection and installation. Provides the UK input to CEN/TC 164/WG 14.

Committee standards activity

In Progress (5)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
BS XXXX	Air break to drain requirements and test methods. Categories: Information management \| Standardization. General rules Proposal begins : 2024-06-20	Proposal
BS XXXX	Devices to prevent pollution by potable water - Pipe backflow of interrupter with permanent atmospheric vent DN 22 to DN 42 - Family D, type C Categories: Information management \| Standardization. General rules Proposal begins : 2024-12-02	Proposal
BS XXXX	Type AUK4 air gap devices with interposed flushing cistern (WC) and appropriate receiving vessel Categories: Information management \| Standardization. General rules Proposal begins : 2024-02-02	Proposal
BS EN 1717:2025	Protection against pollution of water intended for human consumption in potable water installations and general requirements for devices to prevent pollution by backflow Categories: Water. Drinking \| Valves. General \| Water supply Approval begins :	Approval
BS EN 13079:2025	Devices to prevent pollution by backflow of potable water - Air gap with injector - Family A - Type D Categories: Water. Drinking \| Valves. Other \| Water supply Approval begins :	Approval

Published (14)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
BS EN 17962:2024	Valves and fittings for buildings and devices to prevent pollution by backflow of potable water. Polymer parts and housings under internal pressure and without external loads Categories: Water. Drinking \| Valves. Check Published standard begins : 2025-01-03	Published standard
BS EN 15092:2008	Building valves. Inline hot water supply tempering valves. Tests and requirements Categories: Water supply Published standard begins : 2008-09-24	Published standard
BS EN 1491:2022	Building valves. Expansion valves. Tests and requirements Categories: Water supply Published standard begins : 2022-08-23	Published standard
BS EN 1490:2000	Building valves. Combined temperature and pressure relief valves. Tests and requirements Categories: Excessive pressure protection \| Water supply Published standard begins : 2000-09-20	Published standard
BS EN 1489:2000	Building valves. Pressure safety valves. Tests and requirements Categories: Water supply Published standard begins : 2000-09-25	Published standard
BS EN 14623:2005	Devices to prevent pollution by backflow of potable water. Air gaps with minimum circular overflow (verified by test or measurement). Family A, type G Categories: Water. Drinking \| Water supply Published standard begins : 2006-01-25	Published standard
BS EN 14622:2005	Devices to prevent pollution by backflow of potable water. Air gap with circular overflow (restricted). Family A, type F Categories: Water. Drinking \| Water supply Published standard begins : 2006-01-26	Published standard
BS EN 14455:2005	Devices to prevent pollution by backflow of potable water. Pressurised air inlet valves DN 15 to DN 50. Family L, type A and type B Categories: Water. Drinking \| Valves. General Published standard begins : 2006-10-10	Published standard
BS EN 14454:2005	Devices to prevent pollution by backflow of potable water. Hose union backflow preventer DN 15 to DN 32 inclusive. Family H, type A Categories: Water. Drinking \| Valves. General Published standard begins : 2006-10-04	Published standard
BS EN 13828:2025	Building valves. Manually operated copper alloy and stainless steel ball valves for potable water supply in buildings. Tests and requirements Categories: Valves. Globe \| Valves. Ball and plug Published standard begins : 2025-02-28	Published standard

Withdrawn (13)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
BS EN 17821:2023	Building valves. Frost resistant taps for outdoor use (FRT). General technical specification Categories: Valves. General \| Water supply Withdrawn begins : 2024-09-25	Withdrawn
BS EN 1717:2001	Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow Categories: Water. Drinking \| Water supply Withdrawn begins : 2009-07-14	Withdrawn
BS EN 1567:2000	Building valves. Water pressure reducing valves and combination water reducing valves. Requirements and tests Categories: Pressure regulators \| Water supply Withdrawn begins : 2009-07-15	Withdrawn
BS EN 15096:2008	Devices to prevent pollution by backflow of potable water. Hose Union anti-vacuum valves. DN 15 to DN 25 inclusive Family H, type B and type D. General technical specification Categories: Water. Drinking \| Water supply Withdrawn begins : 2020-07-06	Withdrawn
BS EN 1491:2000	Building valves. Expansion valves. Tests and requirements Categories: Water supply Withdrawn begins : 2022-08-23	Withdrawn
BS EN 1488:2000	Building valves. Expansion groups. Tests and requirements Categories: Water supply \| Water heating Withdrawn begins : 2021-06-01	Withdrawn
BS EN 1487:2000	Building valves. Hydraulic safety groups. Tests and requirements Categories: Water heating \| Water supply Withdrawn begins : 2014-07-14	Withdrawn
BS EN 14506:2005	Devices to prevent pollution by backflow of potable Water. Automatic diverter. Family H, type C Categories: Water. Drinking Withdrawn begins : 2009-10-20	Withdrawn
BS EN 14451:2005	Devices to prevent pollution by backflow of potable water. In-line anti-vacuum valves DN 8 to DN 80. Family D, type A Categories: Water. Drinking \| Valves. Check Withdrawn begins : 2008-11-06	Withdrawn
BS EN 13434:2006	Devices to prevent pollution by backflow of potable water. Mechanical disconnector, hydraulic actuated. Family G, type B Categories: Water. Drinking \| Valves. Check Withdrawn begins : 2022-01-18	Withdrawn

Standards Development

B/504/-/14 - Valves and fittings for buildings & devices to prevent pollution by backflow

Committee standards activity