I started the process of de-winterizing today and quickly got stumped . The water pressure from my home supply removed all of the pink from all of the water facets inside and outside until clear water...
A 6-12 gallon water heater takes a long time to fill. I usually dewinterize the lines while the water heater is still in bypass. Then once that is done, I hope the pressure relief valve and switch from WH bypass to normal and let it fill till the water somes out of the pressure relief. Then run the hot water faucets again to remove the remaining air in the tank.