Originally Posted by Grounded
It's a 6 gallon Suburban water heater in my 04 Sandpiper and it has one cutoff valve at the cold water intake at the bottom of the tank. Do I just need to shut this when I drain the tank and then pump in anti freeze or is this just a cutoff valve and not a true bypass?
My current 2010 Flagstaff has 3 valves incorporating the bypass. These valves are just standard "gate" valves that you twist open or close like a spigot.
HOWEVER, my previous TT (2000 Fleetwood) had just 1 valve to make the bypass. This valve was a directional valve which allowed flow in whichever direction the valve was turned; i.e, the valve was always open and only the direction of flow was changed.
I suspect if you just have the one valve at the base of the WH that it's a bypass of the type I had on my old TT. You should be able to study the tubing configuration and see what it's doing.
Here's an example of what a one-valve installation looks like:
2010 Flagstaff 829RGSS
Still to go: AK, NL, NT, NU, YT