What is the benefit of auxiliary valves on chlorinator flexible feed pipes?

The benefit of auxiliary valves on chlorinator flexible feed pipes primarily relates to their role in preventing backsiphonage. Backsiphonage can occur when there is a drop in water pressure, potentially allowing contaminants from the surrounding environment to be drawn back into the water supply through the chlorinator system.

By incorporating auxiliary valves, mechanisms can be established that help maintain positive pressure in the system, thereby preventing the reversal of flow that leads to backsiphonage. This is critical for ensuring that the water remains safe and free from contamination, particularly in systems where toxic or hazardous chemicals, like chlorine, are used for disinfection.

While easier maintenance, pressure control, and flow rate increase are important considerations for chlorination systems, the primary function of auxiliary valves in this context is to safeguard drinking water from contamination through proper hydraulic control, which is why this answer is emphasized as the correct one.