top of page


(800) 66-BKFLO | (800) 662-5356


WATTS LF919-QT 1 - 1" - Reduced Pressure Zone Assembly RP - (0065373) - LF919-QT 1


Shipping Size: 17X11X8in


Lead Free: YES

1 In Lead Free Reduced Pressure Zone Assembly, Quarter Turn Ball Valves


This 1 inch lead free reduced pressure zone assembly is designed to prevent 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 with separate access covers for in-line repairs. It can be used in a variety of installations 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 a bronze body construction, NPT end connections, quarter turn ball valve shutoffs with tee handles, two poppet style check valves and replaceable check seats, top mounted test cocks and a bottom mounted relief valve for reduced space requirements.



  • Quarter turn full port resilient seated ball valve shutoffs with tee handles
  • No special tools are required for servicing
  • Separate access covers for the check valves and relief valve for ease of maintenance
  • Innovative check valve plastic cover bushing provides trouble free guiding of the check valve poppet
  • Compact, space saving design
  • Bottom mounted relief valve for reduced clearance installation
  • Lead free bronze body with NPT end connections
  • EZ twist relief valve cover with quarter turn locking joint captures the spring load during repair to facilitate disassembly
  • Top mounted screw driver slotted test cocks for easy testing and use in reduced clearance installation


Backflow Preventer TypeReduced Pressure Zone Assembly
Body FinishCast Bronze
Body MaterialLead Free Bronze
Body PatternInline
Brand NameWatts
Buy American Act CompliantYES
Bypass SizeDoes Not Apply To Product
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-Fahrenheit180
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 Number0065373
Polymer CoatingNo
Pressure OperationContinuous
Protection TypeBackpressure and Backsiphonage
Seat MaterialEngineered Plastic



WATTS LF919-QT1 - 1" - Reduced Pressure Zone Assembly RP - (0065373)

SKU: 0065373