1005458 MFG #: 0391004WATTS

This 1 inch lead free reduced pressure zone assembly is designed to prevent the backflow 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 with a single access cover for in-line repairs. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and for contaminants at the service line entrance. This assembly consists of a lead free bronze body, 1 inch NPT end connections, quarter turn ball valve shutoffs with tee handles, top mounted test cocks, two in-line independent check valves, captured springs, and replaceable check seats with an internal relief valve for reduced space requirements.


  • Single access cover and modular check construction for the ease of maintenance
  • Large body passages provides a low pressure drop
  • Quarter turn full port resilient seated ball valve shutoffs
  • Internal relief valve for reduced installation clearances
  • NPT inlet and outlet connections
  • Test cocks are screwdriver slotted
  • Replaceable seats for an economical repair
  • Captured springs for safe maintenance
  • Lead free bronze body construction for durability
  • Specification

Backflow Preventer Type             Reduced Pressure Zone Assembly

Body Finish        Cast Bronze

Body Material   Lead Free Bronze

Body Pattern     Inline

Brand Name      Watts

Bypass  No

Cap And Tether No

Disc Material     Silicone

Elbow Fitting     No

GDS Status          Registered

Hot And Harsh Water    No

Hydrant Connection       No

Inlet Connection Size     1 IN

Inlet Connection Size-Metric      25 MM

Inlet Connection Type   Female Threaded

Inlet Shutoff Valve Type               Quarter Turn Ball Valve

Inlet Thread Type            NPT

Lead Free            YES

Maximum Temperature-Fahrenheit       180

Maximum Working Pressure-BAR            12.00

Maximum Working Pressure-PSI              175

Meter Type        No Meter

Minimum Temperature - Celsius              0.50

Minimum Temperature-Fahrenheit        33

Outlet Connection Size 1 IN

Outlet Connection Type                Female Threaded

Outlet Shutoff Valve Type           Quarter Turn Ball Valve

Outlet Thread Type         NPT

Part Number     0391004

Polymer Coating              No

Pressure Operation        Continuous

Protection Type                Backpressure and Backsiphonage

Seat Material    Engineered Plastic

Series   LF009

Strainer                No

Type      Kit