What technology is often used with check valves to prevent back flow in plumbing?

The use of ball floats in conjunction with check valves is a common practice to prevent backflow in plumbing systems. Ball floats work by using a buoyant device that floats on the surface of water within a tank or chamber. When water rises to a certain level, the ball float rises and operates a mechanism, typically shutting off the flow of water once the desired level is reached.

In plumbing systems, check valves are designed to allow water to flow in only one direction. However, there are situations, especially in cases of fluctuation in pressure or unexpected changes in system dynamics, where the flow might reverse. The ball float mechanism acts as an additional layer of control by ensuring that, should backflow occur, the valve can close and prevent water from re-entering the system or contaminating water supplies.

This combination of technologies supports the overall integrity of plumbing systems, ensuring that water flows safely and effectively, protecting against backflow which can lead to contamination or loss of pressure.