Travato Interior Fresh Water Tank Fill Plug
Replacement fill plug for the fresh water tank on models of the Travato with inside fresh water tanks. The check valve prevents siphoning - after filling the tank from the exterior fill port, several gallons of water can be siphoned out of the tank; the check valve prevents that from happening.
There are two versions: The first has a handle and uses an o-ring for the seal - no tool needed and no plumbers tape. The second version is a commercially available ABS plug with the check valve added; you'll need a tool of some sort to install and remove it.
Note: this is NOT for the fresh water tank drain that is mounted underneath the van on newer models.