Protecting Potable Water
Irrigation systems can draw fertilizer or debris back into drinking water during pressure reversals. Backflow preventers stop that pathway.
Common Residential Types
Pressure vacuum breakers (PVB) are common where code allows; reduced pressure (RPZ) assemblies add protection where hazards are higher.
Testing and Tags
Most jurisdictions require annual certification. Keep tags on the device and photos in the customer file.
Winterization
Many devices need proper draining or insulation—follow manufacturer freeze guidance.
Frequently Asked Questions
Can I install a backflow myself?
Often requires a licensed plumber—check local rules.
Why is my PVB leaking after startup?
Debris on seats or failed checks—service per manual.
