Deleted member 3011
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When I open the frost valve on mine, the heater and the entire water tank empty...
And that will happen with all taps off so air is getting in somewhere for that to happen otherwise it would be like turning a bottle full of water capped with a small hole in the cap upside down - lots of glugging but not much flow.
Outlet fitting for Truma Ultrastore- for flexible piping
Hot water outlet connection for Truma Ultrastore. Connects to 1/2" flexible piping. Includes clear tubing for vent.
There is another version for JohnGuest tubing