| Project: | A465 Heads of the Valley Road Widening – Pipe Diversions Using Kwik-ZIP HDXT-153 Spacers |
| Carrier Size: | 711mm and 1,118mm OD coated and lined steel pipe |
| Casing Size: | 1,050mm and 1,500mm ID precast concrete |
| Run Length: | 4 x runs (2 x 35m and 2 x 47.5m) |
| Spacer Model: | HDXT-153 (153mm high) |


Kwik-ZIP’s spacer systems are trusted by infrastructure professionals worldwide for critical pipeline and casing installations. With a strong international presence, Kwik-ZIP has consistently demonstrated its ability to supply high-quality, engineered spacer solutions to meet the demanding requirements of major civil, mining, and utility projects across Europe, North America, the Middle East, and Asia-Pacific.
Their responsive support, rapid delivery capabilities, and adaptable product range make them a preferred partner for contractors and asset owners needing reliable performance in high-stakes environments.
The A465 Heads of the Valley project involves the extension and widening of a major transport corridor in South Wales. As part of this infrastructure upgrade, existing utility services required diversion. Four new pipe crossings were installed through precast concrete tunnels beneath the roadway at Hirwaun.
To ensure safe and efficient installation of the carrier pipes within these tunnels, Kwik-ZIP HDXT-153 casing spacers were utilised across all four crossings.
The four crossings comprised of two crossings of 35 and 47.5M each of 711mm OD pipe into 1050mm ID casing, and two crossings of 35 and 47.5M each of 1,118mm OD into 1500mm ID casing.
The use of Kwik-ZIP HDXT-153 spacers ensured proper alignment and centralization of the pipes within the tunnels, reducing friction during installation and protecting pipe coatings. The modular design of the HDXT-153 system provided a reliable, corrosion-resistant, and load-bearing solution suitable for the project’s demanding conditions.
Kwik-ZIP spacers have no metal parts and are made from Kwik-ZIP’s engineered thermoplastic blend that is flexible, extremely tough and has a low co-efficient of friction.
Kwik-ZIP’s large range of spacers caters for a wide range of carrier / casing pipe size combinations as well as providing flexibility to deal with project alterations. For further information on kwik-ZIP products and to discuss your specific project requirements please contact us

