What is the minimum pressure for check valve #1 on the RP?

In backflow prevention systems, specifically in reduced pressure (RP) assemblies, maintaining a minimum pressure in the check valves is crucial to ensure proper functioning and prevent backflow. For check valve #1 on an RP, the minimum pressure is set to a standard of 5.0 psi.

This minimum pressure is vital because it ensures that the check valve can effectively seal and prevent reverse flow of water, which could contaminate the potable water supply. When the pressure drops below this threshold, the valve may not close properly, leading to potential backflow conditions that could compromise water safety.

Understanding this minimum requirement emphasizes the importance of monitoring and maintaining adequate pressure levels within backflow prevention systems, as failures in this area can have significant implications for public health and safety.