The multilayer pipe (MLP) used for the Bute-Gasline Gas System consists of 3 layers: an outer yellow PE-Xb layer then aluminium and then an inner black PE-Xb layer. This is sometimes abbreviated as "PEX-AL".
Regardless of brand, PEX pipes are manufactured via 3 methods (A, B or C) but contrary to popular belief, these letters are not grades of PEX and have nothing to do with the quality or performance of the pipe. The letters are used merely to identify the manufacturing process and in fact, all types of PEX pipe must adhere to the same standard in terms of:
In brief, there are 3 main manufacturing processes used to produce PEX pipe:
The PEX-b pipe that is used is made using the Silane or Moisture Cure method. PEX-b pipe has the highest bursting pressure compared to PEX-a and a similar or better resistance to oxidation – a very important factor for plumbing installations. Furthermore, PEX-b pipe has been in use for over 40 years with no known issues – offering peace of mind.
The Gasline Gas System complies with the Australian and New Zealand joint standards AS/NZS 4176.8 and is ISO Type 5 approved.
The Gasline system is quality controlled and also tested in-house, covered by extensive worldwide patents.
There is a 25 year guarantee when installed by a licensed gasfitter in accordance with the Gasline Technical & Installation Manual as well as local and national gasfitting regulations.