Discuss Are Oil pipe inserts regulation or not ? in the Plumbing Jobs | The Job-board area at PlumbersForums.net
To be honest, I think the OFTEC written guidance sits on the fence a bit as regards inserts. On the page before the one that Gazzt posted at the top it just talks about the problems that Type A compression fittings can cause and then refers to BS EN 1254 Part 2. The BS says that inserts are required on R220 (soft) tube at 18mm and above and are possibly required below 18mm, manufacturer's advice should be sought. Manufacturer's advice seems a bit more definitive - e.g Connex say 'when using compression fittings with soft copper tube...it is essential that an appropriate tube liner is also fitted.' It would be easier if the Oftec guidance just said 'inserts should be used'.
Only use them if they come in the fire valve box.
Reply to Are Oil pipe inserts regulation or not ? in the Plumbing Jobs | The Job-board area at PlumbersForums.net
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