McAlpine MACTUN Product Demo with Fred

Here’s Fred with a product demo of the MACTUN - it’s the only combined tundish and non-return valve with a silicone membrane seal that has no spring mechanism ensuring it will not be affected in hard water areas.
Find the full product info and technical drawings of the MACTUN-1 and MACTUN-2 at bit.ly/2tITkPG
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[@antoniogalluccio4213]

If I use mactun 2, still I will still have to have 30 mm lenght D2 pipe before 🎉the first brand or not because it increases from 22 to 32mm? And if so where would start measuring from. Will the the centimeters of the non rerurn valve count for the 300mm it matters to me as I can't go to much down

[@mcalpineplumb]

This would be covered by G3 regulations and would need to be checked with the relevant governing body.