Winterizing your RV water system doesn't have to waste a full tank of antifreeze. The Valterra P23502VP completely isolates your water heater from the rest of the plumbing circuit -- so you pump antifreeze only through the supply lines, not through the 6- to 10-gallon water heater tank sitting behind your dinette. The result: you protect your pipes with significantly less antifreeze and get your rig winter-ready faster.
Most RV water heaters hold 6 to 10 gallons. Without a by-pass kit, every one of those gallons must be filled -- and later flushed -- with RV antifreeze each time you winterize. The P23502VP reroutes the supply line around the heater tank entirely, so antifreeze travels straight through the lines and fixtures without ever entering the heater. That alone saves most owners 6 or more gallons of antifreeze per winterization cycle.
The kit is designed as a seasonal installation -- install it once in the fall, use the 1/4-turn valves to switch between winter (by-pass) mode and summer (normal) mode, and repeat year after year. No threading and re-threading fittings every season.
Routes antifreeze around the water heater tank, not through it, cutting antifreeze consumption significantly each season.
Quick 90-degree valve rotation switches between normal operation and winterization mode -- no tools required.
All components are manufactured from food-grade, non-toxic materials safe for potable water contact year after year.
Compact 8-inch kit fits in the space behind most standard RV water heaters without requiring panel modifications.
The kit ties into the cold-water inlet and hot-water outlet lines of your water heater. During normal summer use, valves are positioned so water flows in and out of the heater tank as usual. When you switch to winterization mode:
In spring, reverse the three valves to restore normal water heater operation. Flush the lines, refill the tank, and you're ready for the season.
The P23502VP is a universal-style kit designed to work with the plumbing behind the majority of RV tank-style water heaters, including common units from Suburban and Atwood/Dometic. It is also suitable for use on boats and marine applications where a water heater is installed in the plumbing loop.