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WATTS - LF909-QT 1 - 1" -  Reduced Pressure Zone Assembly - (F391009) - LF909-QT 1 - UPC 098268051186


Shipping Size: 16x10x6in


Lead Free: YES

1 In Lead Free Silicon Bronze Reduced Pressure Zone Assembly, Quarter Turn Shutoff Valves


This 1 inch lead free silicon bronze reduced pressure zone assembly with its exclusive design incorporating the patented air-in and water-out principle for protection during an emergency condition prevents the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance for in-line repairs. It can be installed horizontal or vertical without the need of any special tools. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and from other contaminants found at the service line entrance. This assembly consists of quarter turn ball valve shutoffs with tee handles, check modules, replaceable seats, top mounted test cocks, and a pressure differential relief valve.



  • Unique patented air-in and water-out design provides high capacity relief valve discharge performance during emergency conditions
  • Quarter-turn ball valves with tee handles
  • Horizontal or vertical (up or down) installation
  • No special tools are required for servicing
  • Replaceable seats
  • Top mounted test cocks
  • Compact for easy installation
  • Single access cover
  • Lead free bronze body


Backflow Preventer TypeReduced Pressure Zone Assembly
Body FinishCast Bronze
Body MaterialLead Free Bronze
Body PatternInline
Brand NameWatts
Buy American Act CompliantYES
Cap And TetherNo
Disc MaterialSilicone
Elbow FittingNo
Hazard Protection LevelHealth Hazard
Hot And Harsh WaterNo
Hydrant ConnectionNo
Inlet Connection Size1 IN
Inlet Connection Size-Metric25 MM
Inlet Connection TypeFemale Threaded
Inlet Shutoff Valve TypeQuarter Turn Ball Valve
Inlet Thread TypeNPT
Lead FreeYES
Maximum Temperature-Fahrenheit140
Maximum Working Pressure-BAR12.10
Maximum Working Pressure-PSI175
Meter TypeNo Meter
Minimum Temperature - Celsius0.50
Minimum Temperature-Fahrenheit33
Outlet Connection Size1 IN
Outlet Connection TypeFemale Threaded
Outlet Shutoff Valve TypeQuarter Turn Ball Valve
Outlet Thread TypeNPT
Part Number0391009
Polymer CoatingNo
Pressure OperationContinuous
Protection TypeBackpressure and Backsiphonage
Seat MaterialEngineered Plastic
SeriesLF909 Small





WATTS LF909-QT 1 - 1" - Reduced Pressure Zone Assembly RP - (F391009)

SKU: 0391009
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