Polybutene-1 (PB-1)

Polybutene-1 was developed over 30 years ago specifically for use as a hot and cold water plumbing pipe material. PB-1 resins are flexible, linear polyolefins produced from 1-butene as homopolymers and as copolymers with ethylene. Polybutene-1 is a proven solution for the conveyance of clean healthy drinking water.

The most important commercial application for Polybutene-1 (PB-1) is therefore in plumbing pipe for residential and commercial use. With superior temperature and thermal capabilities compared to other materials, there is no need for lagging – it endures and continues to perform both in low and high temperature applications. The flexibility of Polybutene-1 pipe assists installers and eliminates water hammer noise. Polybutene-1 is also environmentally friendly as it is 100% recyclable.

Buteline offers lengths and coils of Polybutene-1 pipe in a variety of sizes, ranging from 10mm to 28mm for the UK market.

Key Advantages of Polybutene-1

As a material, Polybutene-1 (PB-1) is technically preferred for the manufacture of piping for reticulating hot and cold potable water systems, as it has many advantages over traditional and competitive materials. 

The important advantages of PB-1 are:

  • Excellent resistance to creep
  • Extremely high strength (high yield strength, high impact strength, high tear strength, high puncture resistance)
  • Exceptional resistance to environmental stress cracking
  • No corrosion or scale build-up
  • Low noise transmission
  • Pigmented against algae formation
  • Low thermal conductivity
  • Withstands many freeze/thaw cycles
  • Larger pipe internal diameter resulting in better pipe hydraulics
  • Low pipe weight and very flexible (low flexural modulus)