What is the size of the gas inlet connection on HOTTAP? Mac Slodyczka February 08, 2020 16:14 Updated Follow The Gas Inlet on the HOTTAP is a 3/8" SAE fitting. Related articles What size gas bottle can I use? HOTTAP V2 Pre-Order Information Can I wire the HOTTAP direct to a 12V Supply? Can I connect my HOTTAP to a bayonet fitting? What comes with your HOTTAP Outing Comments 0 comments Please sign in to leave a comment.