What does the assembly of a reduced pressure backflow device consist of?

The assembly of a reduced pressure backflow device is comprised of two check valves and a differential pressure zone. This design is essential for preventing the backflow of contaminated water into the potable water supply.

In this device, the two check valves function to prevent backflow by closing if there's a drop in pressure or reverse flow. The space between these two check valves is known as the differential pressure zone, where the pressure is maintained lower than the supply pressure. This ensures that any potential contaminants that might enter this zone are unable to flow back into the drinking water system since the pressure in that zone is kept lower than the supply pressure.

This specific assembly is critical for applications where there’s a high risk of backflow that could introduce harmful substances into the potable water supply, making it a crucial component in maintaining water quality and safety.