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2009

Development of Technical Readiness for Large Diameter Ball Valves

  • Status: Live
  • Reference: NIA_CAD0148
  • Lead Network: Cadent
  • Start Date: 01 November 2025
  • End Date: 01 February 2027
  • Budget: £667,000
  • Funding Mechanism: Network Innovation Allowance
  • Technology: Hydrogen
  • Collaborating Networks: Cadent

Abstract

In order to construct, commission and operate new hydrogen pipelines and installations safely, and as part of modifications to existing assets for repurposing, ball valves are required to carry out isolations. Selected ball valves need to have been proven to be suitable for service in large diameter high pressure hydrogen networks.

This project will carry out performance validation testing on a 32″ ball valve to confirm suitability to operate in high pressure hydrogen networks.

The API 6D Annex test requirements are relatively new, with suppliers still trying to understand the requirements. Particularly at the higher quality levels of SLH 3 and 4, no valves have currently gone through the test programme. In addition, as the standard allows a choice of test gases it is important to understand the leakage correlations and how these relate to valve performance. This project aims to build knowledge in these areas so that Cadent can generate realistic and achievable specifications and test plans as well as understand future qualification data.
file format pdf download NIA_CAD0148_PEA_Large_Diameter_Valves_2025_11_17.pdf
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