This upper valve gasket is a vital component of the manual toilet 01430. Its role is to seal the inlet valve through which fresh water enters the toilet bowl during pumping. Over time, the original rubber seal can harden or warp, leading to incomplete suction of water and even allowing liquid to slip back into the pump. Replacing it with a new, flexible gasket immediately resolves these issues – the toilet bowl will fill quickly again and the pumping will be reliable, without losing prime.
Changing the upper flapper seal is part of the routine maintenance for any marine toilet. The procedure is straightforward and only takes a few minutes, yet the impact is significant: easier pumping action and more dependable operation of the system.
Usage and Maintenance Recommendations:
- Replace the upper valve seal if you experience weak suction or notice the toilet bowl isn’t filling as it should. These are clear signs of a worn flapper gasket.
- It’s advised to inspect and replace this gasket every 1-2 years of active boating, especially if you sail frequently. Regular upkeep prevents bigger failures down the line.
- Always keep a spare upper gasket on board. It’s an inexpensive small part but critical for toilet function – having one handy during long voyages or remote cruising can save you from inconvenient toilet problems.





