MD3B Volvo-Penta sea water to fresh water conversion
George, thanks so much for taking the time to give me the instructions. I am determined to duplicate what you have done. Using a 12v pump makes sense and I''ll look for one. I am still a bit stumped by the expansion tank. I hope you will bear with me for more understanding. If I use PVC (which makes sense) how will I provide for a pressure relief? This is one of the functions of a radiator cap which releases pressure at a predetermined point. If the system isn''t pressurized and a pressure relief incorporated wouldn''t problems exist? When you made yours out of copper 3" x 12" pipe did you have a radiater cap neck soldered to the pipe so you could use a cap to pressurize the system?
Thanks again for allowing me to pick your brain. Peter