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AMES 4000SS OSY - 4" - RP  ASSY - (0692721)  


Lead Free: YES - 4 In Ss Reduced Pressure Zone Assembly, Domestic Osy Shutoffs, Cam-Check Valves


This 4 inch stainless steel reduced pressure zone assembly is designed to prevent the reverse flow of contaminated water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross-connections identified as health hazard applications and from other contaminants found at the service line entrance. This compact and short lay length design with a single access cover consists of a lightweight stainless steel body, domestic outside stem and yoke resilient seated gate valves, spring loaded cam-check valves, pressure differential relief valve and test cocks.



  • Compact construction for smaller enclosures
  • No special tools required for servicing
  • Stainless steel relief valve features a balanced rolling diaphragm to eliminate sliding seals and lower maintenance costs
  • Replaceable seats for economical repair
  • Stainless steel body
  • Health hazard application
  • No special tools are required for servicing
  • Domestic outside stem and yoke gate valves
  • Stainless steel construction provides long term corrosion resistance and maximum strength


Backflow Preventer Type Reduced Pressure Zone Assembly
Body Finish Stainless Steel
Body Material Stainless Steel
Body Pattern Straight
Brand Name Ames Fire & Waterworks
Buy American Act YES
Bypass No
Bypass Size Does Not Apply To Product
Cap And Tether No
Disc Material Rubber
EAN 737733019480
Elbow Fitting No
Hazard Protection Level Health Hazard
Hot And Harsh Water No
Hydrant Connection No
Inlet Connection Size 4 IN
Inlet Connection Size-Metric 100 MM
Inlet Connection Type Flanged Joint
Inlet Shutoff Valve Type Outside Stem And Yoke Gate Valve
Inlet Thread Type Does Not Apply To Product
Lead Free YES
Maximum Temperature-Fahrenheit 110
Maximum Working Pressure-BAR 12.06
Maximum Working Pressure-PSI 175
Meter Type No Meter
Minimum Temperature - Celsius 0.50
Minimum Temperature-Fahrenheit 33
Outlet Connection Size 4 IN
Outlet Connection Type Flanged Joint
Outlet Shutoff Valve Type Outside Stem And Yoke Gate Valve
Outlet Thread Type Does Not Apply To Product
Part Number 0692721
Polymer Coating No
Pressure Operation Continuous
Protection Type Backpressure and Backsiphonage
Seat Material Rubber
Series 4000SS
Strainer No
Tradename None
Type Kit

AMES 4000SS OSY - 4" - Reduced Pressure Zone Assembly - (0692721)

SKU: 0692721