Stop pouring antifreeze into a tank that doesn't need it. The Valterra P23504LFVP bypass kit installs once and stays in place, letting you redirect antifreeze around your 10-gallon water heater every fall and open the system back up every spring -- no replumbing required, season after season.
When you winterize an RV without a bypass kit, every drop of RV antifreeze you pump into the system has to fill the water heater tank before it reaches the rest of your plumbing. On a 10-gallon heater, that's 10 gallons of antifreeze going into a tank you don't need to protect -- straight antifreeze wasted before a single line is covered.
The Valterra P23504LFVP solves that permanently. Its brass valves are designed to stay installed year-round. In the fall, rotate the valves to bypass mode and antifreeze flows directly into your cold-water lines, skipping the heater entirely. Come spring, rotate back to normal flow, drain and flush the system, and you're done.
Bypasses the full 10-gallon tank volume so antifreeze goes only where it needs to -- into your supply and drain lines, not a tank that's already protected.
Solid brass valve bodies resist corrosion and stay installed between seasons. No removing and reinstalling cheap plastic fittings every year.
Switching between bypass and normal flow takes seconds. Turn the valves to redirect flow -- no tools, no guesswork, clearly defined positions.
Install once on your 10-gallon heater's inlet and outlet ports. The kit stays plumbed in permanently, ready for the next winterizing or de-winterizing cycle.
Your RV water heater has a cold-water inlet and a hot-water outlet. Under normal operation, cold water enters, heats up, and exits to your fixtures. A bypass kit adds valves at both ports plus a crossover line between them. In bypass mode, the inlet valve closes off flow into the tank, the outlet valve closes off flow out of the tank, and a third valve opens the crossover so water or antifreeze travels directly from inlet to outlet -- around the tank entirely.
The P23504LFVP is configured specifically for 10-gallon heater geometry, with the correct crossover length and valve spacing to match the standard 10-gallon port layout used on Atwood (now Dometic) and Suburban water heaters common in RVs.
The P23504LFVP mounts directly to the cold-water inlet and hot-water outlet connections on your water heater. Both ports use standard 1/2 in. NPT threads common to Suburban and Atwood/Dometic 10-gallon heaters. The kit includes all valves and the bypass line -- you will need Teflon tape and basic plumbing tools (adjustable wrench or channel-lock pliers). No soldering required.