Water Check Valve Backflow Preventer

If either check valve should leak the relief valve is designed to open and discharge water to the outside ensuring that backflow never occurs.

Water check valve backflow preventer.

Back siphonage occurs when higher pressure fluids gases or suspended solids move to an area of lower pressure fluids. During normal operation of an rpz backflow preventer the pressure between the two check valves referred to as the zone of reduced pressure is maintained at a lower pressure than the supply pressure. Check valves prevent backflow into sump disposal lines wastewater lines sewage lift stations and ejector systems. Another common location for a backflow preventer is the connection of a fire sprinkler system to a water main to prevent pressurized water from flowing from the fire suppression system into the public water supply.

Backwater valves protect against weather conditions that cause sewage overflow such as heavy rain. Backflow preventers prevent contamination of potable water by keeping water from flowing backwards into a water supply line. Backflow preventers prevent contamination of potable water by keeping water from flowing backwards into a water supply line. It s compact modular design means easy maintenance with a single access cover for in line repairs.