The DeringerTM 50 Reduced Pressure Detector Assemby (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
• Integral shutoff valves indoor/outdoor application
• 100% stainless steel housing
• Tamper-resistant test cocks
• Stainless steel braided wire sensing line
• Patented Dual-actionTM second check module
- Poppet action at low flow
- Swing action at high flow
• Balanced chamber Relief Valve
- No sliding seals
• Poppet action first check for more reliable
Relief Valve closure
• Lead free bronze bypass components
• CuFt or gallons bypass meter
• Single check bypass
• Prewired supervisory switches
• Flanged adapters available
• IPS grooved ends