The Davant Whitespeed & GPF 15mm Plastic Push Fit Pipe Insert is an essential internal pipe support designed for use with 15mm polybutylene (PB) barrier pipe in push‑fit plumbing systems. It reinforces the pipe at the joint, helping to ensure a secure, leak‑free connection when used with Davant Whitespeed and GPF push‑fit fittings. 

Manufactured from durable, high‑quality plastic, this insert supports the pipe wall, prevents deformation during installation, and helps restore the pipe’s round shape after cutting for reliable sealing performance. 

Key Features & Benefits

• Size: 15mm

• Material: High‑quality plastic for flexibility and corrosion resistance 

• Compatibility: Suitable for Davant Whitespeed & GPF push‑fit fittings 

• Pipe Type: Designed for polybutylene (PB) barrier pipe only 

• Function:

  • Supports pipe ends within push‑fit joints

  • Helps maintain pipe roundness after cutting

  • Assists correct sealing of the internal ‘O’ ring 

• Installation: Simply push fully into the pipe before fitting – no tools required 

Typical Applications

• Domestic hot and cold water systems

• Central heating installations

• New plumbing work, repairs, and maintenance