Hey BadKat. If you have an air compressor you can buy or make a fitting that will fit the water inlet port and let you attach a quick connect fitting. If you lower the pressure to 35-50 psi or so you can let it flow as you go through the trailer and blow your lines. Each faucet making sure to get the toilet and low point drains, don't forget the outside faucet if you have it. I disconnect the shower flex line. I also, but need to do it separately, do the black tank flush if you have one. Pull the plug on the water heater tank too. With the compressor running I go around and do this 2 or 3 times to be sure. After doing this I remove any water filter elements you may have either under the counter or in the faucet stem. Have new filter on hand to install in the spring. When all done take a gallon jug of RV antifreeze and put some in each drain trap and the toilet bowl as well to keep the seals lubricated. That's pretty much it and you're set when the spring travel bug arrives. NOW, if you're lucky enough to have a heated barn ??????
Roger in NJ
" Democracy is the worst form of government. Except for all the rest"
Winston Churchill 1948
TAC - NJ 18