Thanks for your response. I did more research and found the answer to all my questions on a YouTube video of a chap in the UK that is doing just what I want to do. The key is a "Check Valve" -- a Cask Ale demand valve. Here is a link to the video plus in his write up is a link to a supplier...
I would like to install a Beer Engine at the brew pub were I'm the brewer. (Anvil Brewing: Pittsburg, TX). I can keg beer directly from the secondary (no carbonation). I only need about 8 oz of CO2 to keep some pressure in the keg to allow the pump to work and yet low enough not to carbonate...
At our Brew Pub (Anvil Brewing) we use one of these 1 BBL Brite Tanks. We keep it in our walk-in cooler so beer is at 38 degrees or so. Normal for the beer to be ready to keg 24 hours after transfer from Secondary Fermenter. My question is how are you guys/gals cooling the Brite tank and beer...