Valterra RV Water Heater Bypass Kits: 6 vs 10 Gallon, EZ Turn

When winterizing an RV with a tank-style water heater, a bypass kit redirects the freshwater plumbing around the heater so the tank does not need to be filled with plumbing antifreeze. Valterra offers different permanent bypass arrangements for 6-gallon and 10-gallon heaters, including a two-valve design and a single-control EZ Turn version. Match the heater size and existing plumbing rather than choosing by appearance alone.

Compare Valterra water-heater bypass kits

Two-valve versus EZ Turn

The P23503LFVP and P23504LFVP are two-valve bypass kits, but their intended heater capacities differ. The P23503LFVP is for a compatible 6-gallon heater; the P23504LFVP is for a compatible 10-gallon heater. The P23505LFVP is also for a compatible 10-gallon heater, but uses Valterra's EZ Turn arrangement with a single operating control. One-control and two-control versions should not be treated as interchangeable without checking the actual plumbing.

Browse the exact kits

P23503LFVP — 6-gallon permanent bypass kit

For compatible 6-gallon tank-style RV heaters. Two diverter controls switch between the normal hot-water path and winterizing bypass.

View P23503LFVP

P23504LFVP — 10-gallon permanent bypass kit

The 10-gallon dual-valve version. Match the heater's fitting spacing and plumbing before replacing an existing bypass arrangement.

View P23504LFVP

P23505LFVP — 10-gallon EZ Turn bypass kit

The EZ Turn version allows switching between the normal water path and bypass with one operating control, rather than the two-valve arrangement.

View P23505LFVP

How a heater bypass fits in the freshwater system

This is a connection overview, not a manufacturer pipe-routing schematic. Specific valve positions, threads, and hose spacing depend on the heater and installation.

Checklist before ordering

1. Identify the heater. Confirm the original heater manufacturer, exact model and tank capacity. These are tank-style heater bypass kits, not universal replacements for tankless units.
2. Compare the hot and cold connections. Verify pipe-thread types, sizes, the separation of inlet and outlet fittings and access to the valves. Do not assume different capacities use identical hoses and fittings.
3. Choose the correct control arrangement. A two-valve kit requires different operation than the EZ Turn single-control version. Follow the instructions for your exact kit.
4. Drain the heater separately. A bypass does not remove the water already stored in the heater tank. Isolate electrical or fuel power, let the heater cool and use its manufacturer's proper draining and winterization procedure.
5. Check the remainder of the plumbing. A heater bypass does not by itself pull antifreeze through faucets, fixtures, traps or other lines. Those parts require the RV's complete winterizing process.
6. Restore normal service correctly. Return the valves to their normal positions and ensure the heater tank is full before restarting the heater.

A separate accessory for the pump side

P23506LFVP — antifreeze pump converter

This separate kit enables a compatible existing RV freshwater pump to draw winterizing antifreeze into the water lines. It is not a heater bypass, and its pump-inlet connection must be checked independently.

View P23506LFVP

Related freshwater reference

For water-pump service and the antifreeze converter's role, see our Valterra HydroMAX pump and winterizing parts guide. For city-water inlet and supply-side information, see our Valterra city-water inlet reference.

See the water-heater bypass in the freshwater plumbing system