After my first time winterizing last fall, I questened the placement of the water heater shutoff and bypass valves. My hot and cold valves are placed before the bypass valve. Is this correct?
Something I always tell other RV's and friends I actually winterize for.
As soon as you winterize your trailer you can instantly de-winterize and return all valves back to operating position as all your really doing is displacing water.
Yes,I'm saying run RV antifreeze through all the lines then simply drain it back out. Been doing like this for over 20 years.