Step 3.

Bypass the water heater ...

This bypass system uses three valves ...

... and the next uses one valve with a one-way check valve at the hot water outlet ...

      The Water Heater Bypass is used when winterizing the water system. It is a series of valves or a single lever valve that allows the water flow to be shut off from the water heater and still be pumped to the rest of the hot water piping. This eliminates the need to fill the water heater tank with 6 gallons of winterizing antifreeze ... the tank is bypassed and then drained of water. See Bypass page.

This quick turn bypass kit comes complete with everything needed to install. This job can be done in about an hour - Buy it from Camping World