We test all types and sizes of backflow prevention assemblies. CBI certifies backflow prevention assemblies ranging in size, the most common device types we work with include:
Reduced Pressure Zone (RPZ) Assemblies — the highest level of protection, required in high-hazard applications such as chemical feed systems, irrigation connected to a fertilizer injector, or fire suppression systems with chemical additives.
Double Check Valve Assemblies (DCVA) — commonly used in lower-hazard commercial and residential settings, such as standard irrigation systems or building water supplies.
Pressure Vacuum Breakers (PVB) — frequently installed on residential irrigation systems and outdoor hose connections.
Backflow preventers are typically installed in areas where there is a potential for cross-connection between the potable water supply and a non-potable water source, including irrigation, swimming and hot tub pool fillers, and fire protection systems.

If you’re unsure what type of device you have or whether it needs to be upgraded, our technicians can assess your setup and advise you on the spot.