What does RP refer to in the context of backflow prevention?

In the context of backflow prevention, RP refers to a Reduced Pressure Backflow Preventer. This device is specifically designed to protect potable water supplies from contamination due to backflow. The reduced pressure backflow preventer maintains a lower pressure within its body compared to the supply pressure, which prevents any possible backflow from entering the clean water system.

This device utilizes two check valves, along with a pressure differential relief valve, to ensure that if backflow occurs, the pressure in the system will drop and allow any potentially contaminated water to discharge to the atmosphere instead of flowing back into the water supply. By doing so, it effectively safeguards public health against potential pollutants.

Understanding the function and significance of reduced pressure backflow preventers is crucial for irrigation technicians, as they play a key role in ensuring compliance with safety regulations and maintaining the integrity of water supplies.