Polypipe use polybutylene to manufacture their barrier pipe beacuase it is the most flexible and efficient material for pipes and plumbing systems available. Polybutylene pipe is ideal for both domestic hot and cold water plumbing and heating systems, offering exceptional durability and long-term performance, which has seen it become the preferred material choice for todays underfloor heating projects.
The most important characteristic of polybutylene pipe is its natural flexibility, allowing you to bend, curve and manipulate the pipe into even the tightest of spaces. Polybutylene is the most malleable plastic used in the manufacture of piping systems
Within the manufacturing cycle polybutylene doesnt require chemical or radiation cross linking, which reduces the number of production processes, leading to faster and more efficient manufacturing. Another key advantage of polybutylene pipe is that it is extremely lightweight, particularly when compared with copper piping systems.
As barrier pipes contain an EVOH barrier layer to reduce oxygen ingress into the system through the pipe wall it is strongly our opinion that these pipes must be used on central heating systems. When tested to DIN 4726 and DIN 4727 barrier pipes give an oxygen permeability less than the value of 0·1g (m3d) specified in DIN 4726. British Gas now accept central heating systems containing standard polybutylene pipes onto their maintenance and service contracts but this may result in additional checks and maintenance being carried out.