I have been brewing Cask Ale for about a year now, in addition to my Kegged beers. The cask has been set up for Gravity Dispense, and I have a LPG Regulator Cask "Breather". Last Spring, my wife got me an Angram CQ 1/4 Pint Beer Engine from Ebay, it came from England. It has a water cooled cylinder. http://www.ukbrewing.com/Angram_Beer_Engine_CQ_1_4_Pt_Single_WaterJacketed_p/23114.htm Cask Side, I have 4.5 Imperial Gallon Pin Cask. Stainless Steel, set up with a Cask Breather (homemade from LPG regulator) that feeds off my keg CO2 Supply. Tap wise, in addition to my Gravity Dispense tap, I bought a 3/4 Thread Tap. http://www.ukbrewing.com/Cask_Tap_sngl_3_4_thread_p/12025.htm When I got the Beer Engine, it had a check valve in the box with it. http://www.ukbrewing.com/Check_Valve_p/40040.htm That's what I have for supplies. Here is how I would like to set it up. My "Cellar" is my attached garage that is about 3 feet lower than the floor level in the house. Sitting on it's stand, my Cask sits close to the house's floor level. For parties, I'd like to clamp the Beer Engine onto my mantel by the fireplace. (fireplace isn't used anymore). That is about 5 feet above the floor give or take a couple inches. Plan is to run the beer line, and the cooling lines for the cylinder from the garage on the backside of the chimney cleanout, up through the bottom of the hearth, and through the fireplace to the beer engine. Total vertical rise, 5-6 feet (2m) max, and maybe a 10ft (3m) total line length tap to engine. Being that beer engine setups aren't exactly common in Virginia, and none of my cask ale books really address how to set up a beer engine properly, it's more the brewing and conditioning than the setup of the beer engine. From being an engineer, I would think the biggest diameter line that fits my fittings, (3/8 ID or 1/2 ID) would be the size to go with. Should the Check Valve go closer to the engine, or closer to the tap. Temp wise, in winter my garage is usually 50F or so. I was thinking of the cooling lines just running from a cooler with a small pump, and to and from the cylinder. I would have the cooling lines and beer line taped together, and have some split pipe insulation over them where it runs inside the house. Does this sound like it's workable, or is there something with beer engine setup I'm missing?