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Part of the 957RPDA Series

Ordering Code: 0111901

UPC: 098268261134

Lead Free Model Available

4 In Ss Reduced Pressure Detector Assembly, Ul/Fm Butterfly Valve Shutoffs, Less Meter, Z Pattern

This 4 inch reduced pressure detector assembly is designed to prevent the reverse flow of fire protection substances and 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. Extremely compact and lighter than traditional designs it is approved for horizontal Z pattern installation. It is ideal for protection at cross-connections identified as health hazards such as on fire sprinkler systems and from other contaminants found at the service line entrance. This assembly without a meter consists of a stainless steel body with a quick access sleeve, torsion spring check valves, grooved gear operated butterfly valves with tamper switch, test cocks, corrosive resistant bottom mounted pressure relief valve.

Product Features

  • The maximum working pressure is 175 PSI (12.06 BAR)
  • Compact design allows small enclosures to be used
  • Groove couplings for ease of installation and pipe alignment
  • Patented torsion spring check modules for ease of serviceability
  • Replaceable check disc rubber
  • 304 (Schedule 40) stainless steel housing and sleeve
  • Approved for horizontal Z pattern installation
  • UL and FM grooved gear operated butterfly valves with tamper switch
  • Bottom mounted cast stainless steel relief valve
Backflow Preventer Type Reduced Pressure Detector Assembly
Body Finish Stainless Steel
Body Material Stainless Steel
Body Pattern Z-Pattern
BrandName Watts
Bypass Yes
Cap And Tether No
Elbow Fitting No
Hazard Protection Level Health Hazard
Hot And Harsh Water No
Hydrant Connection No
Inlet Connection Size 4 IN
Inlet Connection Type Grooved Joint
Inlet Shutoff Valve Type Gear Operated Butterfly Valve
Inlet Thread Type Does Not Apply To Product
LeadFree NO
Maximum Temperature-Fahrenheit 110
Maximum Working Pressure-BAR 12.06
Maximum Working Pressure-PSI 175
Meter Type No Meter
Minimum Temperature-Fahrenheit 33
ModelNumber 957ZRPDA-BFG-LM 4
Outlet Connection Size 4 IN
Outlet Connection Type Grooved Joint
Outlet Shutoff Valve Type Gear Operated Butterfly Valve
Outlet Thread Type Does Not Apply To Product
Part Number 0111901
Polymer Coating No
Pressure Operation Continuous
Protection Type Backpressure and Backsiphonage
Series 957RPDA
Strainer No

Product Accessories