Huntingdon Fusion Techniques (HFT) has now reached the MKV version of its designs by launching the new PurgElite® series of Tube and Pipe Purging systems for diameters from 1in to 12in diameter inclusive. The new series features several major advantages over previous weld purging systems and has taken into consideration the evolving technology in all market places where much higher specifications of materials and work finish are expected. The key feature of the series is the development of a low profile purge gas release valve that is required to purge the chamber between the two dams once they are inflated.