If you're looking for a slightly more rigid alternative to JG Speedfit's polybutylene pipe, try this PEX barrier pipe for plumbing and heating. It's flexible, easy to install and ideal for both long and short pipe runs.
The pipe is made up of five layers, including a coloured oxygen barrier in the centre - this prevents the ingress of air into the system, reducing the effect of corrosion on metal components. Due to its low thermal conductivity, the pipe is cooler and safer to touch when it's carrying hot water too. 
For a flexible and high performance plumbing and heating system, it is recommended to combine this plastic pipe with the range of JG Speedfit fittings.
• Suitable for hot and cold water services
• Can be used on central heating systems and combi systems
• Minimum operating temperature of 20°C
• Maximum operating temperature of 105°C
• 12 bar maximum operating pressure at minimum temperature
• 3 bar maximum operating pressure at maximum temperature
• 50-year manufacturer's guarantee (T&Cs apply)
• Manufactured to BS EN 7291 Parts 1, 2, 3 and S
• WRAS-approved