The 4 inch Ames Deringer™ 50G Reduced Pressure Detector Assembly is designed to prevent non-health hazard pollutants and hazardous contaminants from entering potable water supply systems due to backpressure or backsiphonage conditions. It is primarily used on fire sprinkler systems to monitor unauthorized water usage.
This backflow preventer features inline serviceable OS&Y gate valves, a durable stainless steel housing, and Patented Dual-action™ checks for high performance across low and high flow rates. It can be installed for continuous pressure service and includes a Type II bypass with a GPM meter for monitoring water usage.
A flood sensor with SentryPlus Alert® technology is integrated to detect excessive water discharges from the relief valve. When activated with an add-on sensor connection kit, this sensor can send alerts to notify personnel of potential flooding. Add-on sensor connection kits are available for BMS and cellular communications.
Features
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Lead Free* bronze bypass components (wetted surface contains less than 0.25% lead by weight)
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Stainless steel housing and braided wire sensing line
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Inline serviceable AWWA C509/UL/FM resilient seated OS&Y gate valves with tamper switch groove
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Patented Dual-action™ second check module providing poppet action at low flow and swing action at high flow
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Poppet action first check for reliable relief valve closure
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Balanced chamber relief valve requiring no sliding seals
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Silicone elastomer check discs and seals
- Tamper-resistant test cocks
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Flexible groove coupling UL Classified/FM Approved (between body and gate valves)
- Flanged ends ANSI B16.1 Class 125
- Prewired supervisory switches
- CuFt or gallons bypass meter
