This water valve kit serves as an easy replacement for all VacuFlush and most Traveler foot pedal flush units. This water valve is not for Dometic/Sealand 300 series. If you see water under your foot pedal all of the time(as opposed to only when flushing), your water valve may be in need of replacing. Included with the water valve are 2 new screws. It’s recommended to use the new screws when installing the new valve. They are a 2x cut thread and will ensure proper assembly. Additionally, Dometic has upgraded the design of the valve. Previously the cap was brass and removable, now the cap is made from plastic and is chemically welded (nonserviceable). The new design is more reliable.