You can download a DRM-free copy of this standard here.

What is PAS 4443:2024 about?

PAS 4443:2024 forms part of the Hydrogen Skills and Standards for Heat programme, aiming to enable the existing natural gas system to be repurposed for use with 100% hydrogen downstream of the emergency control valve (ECV).

Sponsored by the Department for Energy Security and Net Zero (DESNZ), PAS 4443:2024 is part of a suite of standards that define the required criteria to safely design and install new hydrogen-safe pipework and appliances. It helps with contributing evidence informing strategic decisions in 2026 on the role of hydrogen in heat decarbonization.

What does PAS 4443:2024 cover?

The standard specifies the requirements for ancillary valves, devices and components used in hydrogen gas installations, supplied with hydrogen 4th family gas. It covers requirements for ancillary components downstream of the emergency control valve (ECV).

It also addresses test and measuring equipment that do not necessarily form part of the final installation but are used in applications associated with the hydrogen gas installation.

The PAS covers gas installations in domestic, residential and non-domestic premises, including commercial and light industrial, in line with the scopes of BS 6891 and IGEM/UP/2.

Key topics include:

Gas classification
Component design specification
Performance
Test and measuring equipment
Maintenance
Marking, instructions and packaging

Who is PAS 4443:2024 for?

PAS 4443:2024 is for use by the manufacturers of valves, devices and components used in hydrogen gas installations.

It might also be of interest to:

Approved bodies
Architects
Consultants
Designers
Gas emergency service or network operators
Government regulators
Installers
Facility managers
Specifiers
Insurers/underwriters

Download a free copy of the standard here.

PAS 4443:2024

Assessment criteria: Ancillary valves, devices and components used in hydrogen gas installations. Specification

Current

Published:

30 Apr 2024