What type of gauge is required to test the RP?

To test a Reduced Pressure (RP) backflow prevention assembly, a differential pressure gauge is required. This type of gauge measures the pressure difference between two points, which is critical for assessing how the RP device is functioning.

In the context of backflow prevention, the differential gauge allows the technician to determine the pressure drop across the RP assembly, which is vital for ensuring that it is operating correctly. The pressure difference must meet specific criteria to verify that the assembly effectively prevents backflow, and only a differential gauge can provide this necessary measurement.

Other gauge types, like standard pressure gauges or digital pressure gauges, typically measure pressure at a single point rather than providing the pressure differential between the inlet and outlet sides of the backflow assembly. Similarly, analog pressure gauges may not offer the precision or functionality needed for such specific applications. Therefore, the differential pressure gauge is specifically suited for testing RP assemblies in backflow prevention scenarios.