Joining 22 mm to Irish 1/2 pipes

Yellow_Fern · 2023-04-09 20:20:27

Hi all, I have read that is it fine to use 15mm fittings on Irish 1/2" pipe. Does this apply even to internal couplers? I am installing a 22mm automatic bypass to my 1/2" bypass pipe and its proving a real head ache so I am trying to use 22 mm to 15 mm couplers.

09-04-2023 09:20PM

#1

Yellow_Fern

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Hi all,

I have read that is it fine to use 15mm fittings on Irish 1/2" pipe. Does this apply even to internal couplers? I am installing a 22mm automatic bypass to my 1/2" bypass pipe and its proving a real head ache so I am trying to use 22 mm to 15 mm couplers.

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#2 09-04-2023 09:57PM

Lenar3556

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In practise, most contractors use the metric fitting (be it 15 or 22mm) and simply exchange the olive for an Irish one (1/2” or 3/4”) where the Irish size pipe is to be connected.
It may not be textbook, but it works quite well.

2