Nebraska Water Well Monitoring Technician (WWMT) License Practice Exam

A check valve is specifically designed to allow water to flow in one direction only. This functionality is crucial in various water management systems, including well water systems, where it prevents backflow and potential contamination of the water supply. By stopping reverse flow, a check valve helps maintain system pressure and ensures that the water delivered to taps or other fixtures remains fresh and uncontaminated.

In summary, the purpose of a check valve stems from its role in promoting the efficient and safe movement of water through a system while preventing undesirable backflow.