Davant Coil Grey Polybutylene Pipe, GPF polybutylene system offers the installer major advantages. The flexible nature of the pipeallows a cabling option, which speeds up pipework routing significantly. It will also cable through joists easily, thus dispensing with the time consuming task of pipe bending and joint compressing in confined areas. GPF PB piping is so flexible that it can be bent to 8 times its diameter without the need for a joint. Few tools are needed to complete even the most complex pipework systems. Joints are push-fit for simplicity and speed of installation. Nothing could be more simple, cleaner or safer. Plumbfit strongly recommends the use of lubricants which reduces installation time and ensures a perfect joint, first time, every time.