British Standards Institution

Source:: BSI
Committee:: B/504/-/14 - Valves and fittings for buildings & devices to prevent pollution by backflow
Categories:: Information management | Standardization. General rules
Comment period start date:: 09/12/2025
Comment period end date:: 09/01/2026

Comment by:

9th Jan

Scope

This British Standard specifies the requirements for on-site commissioning and field testing of verifiable Type BA backflow prevention devices (RPZ valves) to confirm correct operation and continued backflow prevention capability.

It does not include requirements for device characteristics, laboratory testing, or criteria for selection, suitability, or installation.

Purpose

This proposed standard has already been shared on SDP: https://standardsdevelopment.bsigroup.com/projects/9025-12671

Comment on proposal

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Are you aware of any regulation, existing standards and other good practice information in this area in the UK (e.g. Industry codes of practice; company specifications, international or European Standards)? *

Would the development of a standard(s) in this area have a particular impact/relevance to SME, consumer, environmental or societal interests? *

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Discard

Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal

Proposal start date:

09/12/2025

Proposal end date:

09/01/2026

2. Draft

3. Public Comments

4. Comment Resolution

5. Approval

6. Publication

Learn more about the standards development process

Standards Development

BS XXXX: Onsite commissioning and verification testing of Type BA backflow prevention devices (RPZ valves)

Scope

Purpose

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