I am trying to fine the 1/2" adapter from the flow meter to a barb fitting for the correct size of the beer line. Can anyone point me in the right direction or link for the connection?
Could it be this you're looking for ?https://www.freshwatersystems.com/p-2485-john-guest-stem-barb-connector-38-od-stem-x-516-id-barb.aspx
Did you ever find where to buy them?
I have two of these coming in the mail tomorrow, I'll let you know how it goes.