Watts LF009M3-QT-FS 3/4 in Lead-Free Reduced Pressure Backflow Preventer
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The Watts 3/4 LF009M3-QT-FS (catalog # 818DD3) is a 3/4 in FNPT reduced pressure zone (RPZ) backflow preventer assembled in the USA and certified to NSF/ANSI 61 and ASSE 1013, featuring a lead-free bronze body with wetted surfaces containing less than 0.25% lead by weight to comply with federal Safe Drinking Water Act requirements. The 'M3' designates modular check construction with a single access cover for in-line serviceability without removing the unit from the line; 'QT' denotes quarter-turn full-port ball valve shutoffs on both inlet and outlet; and 'FS' indicates an integrated Syncta flow sensor/monitoring module (inspected 09/2025 per label) that requires a separate sensor connection kit to activate wireless leak alerts. This assembly is approved for potable water service, irrigation, fire suppression, and industrial process protection where a high-hazard cross-connection requires a testable RPZ assembly. The unit ships new — other in the original Watts blue box with Syncta sensor attached; the box shows cosmetic shelf wear but the valve assembly is unused and uninstalled.
Product Specifications
| Manufacturer | Watts |
| MPN | LF009M3-QT-FS |
| Catalog # | 818DD3 |
| Watts Item # | 88004008 |
| Pipe Size | 3/4 in |
| End Connection | FNPT |
| Backflow Preventer Type | Reduced Pressure Zone (RPZ) |
| Body Material | Lead-free bronze |
| Lead-Free Compliance | Wetted surfaces <0.25% lead by weight |
| Check Valve Design | Modular, single access cover (M3) |
| Shutoff Valves | Quarter-turn full-port ball valves (QT) |
| Sensor Feature | Syncta flow sensor (FS); requires connection kit |
| Sensor Inspection Date | 09/2025 |
| Certifications | NSF/ANSI 61, ASSE 1013 |
| Country of Assembly | USA |
| Condition | New — other; original box, unused |