Originally Posted by Mifair
without this valve kit, how is plumbers antifreeze fed into the pipes?
Without the kit, the only way I know to do this it is to 1st be sure the fresh water tank is drained then close the petcock and add 2-3 gallons (or more if needed) of potable RV antifreeze. if the trailer is leaning slightly towards the pickup tube, you should be able to use the pump to get it. The kits cost about $20-25. A local dealer carries 3 different brands and there's little difference between them, one has a plastic valve, the others are brass.