The JG Speedfit 15 mm Pipe Insert is a small but essential component used in push-fit plumbing connections. It is designed to reinforce the inside of 15 mm pipework at connection points to ensure a secure, leak-free joint when using Speedfit fittings.

Function & Purpose

When you insert a length of plastic pipe into a push-fit fitting, the walls of the pipe can sometimes compress slightly under the grip of the fitting’s internal rings. The pipe insert provides internal support, preventing collapse or distortion so that the pipe stays rigid and fully seated in the fitting. This helps maintain a reliable, watertight connection that performs well under normal water or heating system pressures.

Compatibility

This insert is specifically made for 15 mm pipe used with JG Speedfit push-fit fittings. It’s suitable for most plastic pipe types that are compatible with JG Speedfit (such as PB, polybutylene, and multilayer composite pipe) where internal reinforcement is required.

Design & Build Quality

The pipe insert is typically made from a durable polymer that resists corrosion and bending. It’s engineered to slip easily into the end of the pipe without special tools, and once fitted it provides firm internal support without affecting flow or performance.

Ideal Applications

This 15 mm pipe insert is ideal for use whenever you’re making push-fit connections with JG Speedfit fittings in plumbing and heating systems. It’s particularly useful on longer pipe runs or where pipe stiffness is needed for reliable fitting engagement, such as behind radiators, in plumbing manifolds, or in areas where pipes may be trimmed frequently during installation.