Our certified technician will check your backflow preventer’s valves, seals, and overall function to ensure it prevents water from flowing backward. The process typically takes about 20–30 minutes per device. Here’s what you can expect from start to finish: our technician will arrive within your scheduled window and check in with your designated contact. They’ll locate your backflow device and use calibrated pressure gauges and specialized test kits to measure pressure differentials across the assembly. This tells us exactly how well each internal check valve and relief valve is performing. If any component shows signs of wear, failure, or non-compliance, we document it immediately and walk you through the recommended next steps, you don’t have to lift a finger.