I have a simple fresh water system. A 20 gallon tank and two manual whale pumps in galley and head. This spring I replaced the original plumbing with PEX and also installed an inspection port in the top of the tank. There is no water heater or filters in the system.This afternoon I opened the inspection port and emptied all the water out of the tank and used the dinghy air pump to blow air back through the two pumps and supply lines. I do not think there is more than a few drops of water in the pumps or lines. Do I still need to use any antifeeze or will this do it ?
Bob
Bob
