Brewtus
#beerbackhome
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I have a new urn to use as a HLT with a tap that has an end with an OD of just over 18mm. What is the smallest size silicon tube I can fit over it to pipe the water to my mash tun? 12.5mm is common but would it stretch that far? do I need 15mm? 16mm? Is there some magic fitting I should know about?