Rheinland Motorhome Water Filler Cap

Does this cap fit a Hobby caravan?

This water filler cap would not fit a Hobby caravan, please note: This item does not fit with Fiamma Water Filler Cap, but it will fit with Fawo Water Tank Filler Cap.

The Rheinland Caravan, Motorhome water inlet cap with quick connection and pressure valve for quick and easy filling of the water reservoir suitable for ABL water inlet, 55mm. Formerly art. 2406016