For example, a simple mechanical float valve might have worked, but it’s not horse friendly and liable to get damaged soon. The electronics is unabashedly minimal.

With 3D printing, [Billy] was able to create a sealed, lightweight float that exactly matched the housing and tube locations. A strip of silicone works as a sealing agent.

2. Replace the Fill Valve If adjusting the float doesn’t do the trick, you may have a leaking fill valve might be beyond saving. Replacing it is straightforward but has a few basic steps.

The float, the flapper, or the fill valve are the most likely causes of a toilet running continuously. You can perform easy tests like monitoring water movement to help identify the cause.