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gas meter union nut size?

View the thread, titled "gas meter union nut size?" which is posted in Gas Engineers Forum on UK Plumbers Forums.

bluesky

Gas Engineer
Dear all,

I tried to replace half meter length of lead pipe with copper pipe this morning, i removed the lead together with two nuts, thought just new copper pipe and two new 22mm nuts and should be easy. then realised that the nut size is slightly bigger than 22mm nut, brought the nuts to BSS , PTS, but they all never saw that nut before, they showed me the standard gas union, is much bigger than the nut i have, i am really confused, is this kind of nut(slightly bigger than 22mm) not in BS codes all French one? anyone have seen it before?


cheers in advance
 
Last edited:
In my days of meter fitting they were known as 5 lite unions ... 🙂 Check out the link 'tamz' has posted ...
 

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