The DeringerTM 50G Reduced Pressure Detector Assembly (RPDA-II ) prevents non-health hazard pollutants and hazardous contaminants entering a potable water supply system when backpressure and/or backsiphonage conditions occur. Used primarily on fire sprinkler systems when monitoring of unauthorized water use is required.

Features
• Poppet action first check for more reliable
Relief Valve closure
• Stem includes tamper switch groove
• lnline serviceable gate valves
• Tamper-resistant test cocks
• Stainless steel housing
• Patented Dual-actionTM second check module
- Poppet action at low flow
- Swing action at high flow
• CuFt or gallons bypass meter
• Lead Free* bronze bypass componets
• Stainless steel braided wire sensing line
• Silicone elastomer
• Balanced chamber Relief Valve - no sliding seals
• AWWA C509/UL/FM resilient seated gate valves (OS&Y)
• DCDA-II Single Check Bypass
• Silicone Elastomer Check Discs
• Flexible groove coupling UL/FM
• Flanged ends ANSI B16.1 Class 125