McAlpine 110mm push fit AAV question.

charliegolf · 2026-02-12T18:11:09+0000

I've fitted one of these today- there are no instructions. It was a one for one swop out. Question: (the 'lid' can screw open, and theres an arrow on the cap showing 'open) Should the cap be screwed down tight; or slightly open to admit air?

Thanks

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McAlpine 110mm push fit AAV question.

charliegolf

DIYnot Local

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