This 4 inch reduced pressure detector backflow preventer assembly protects potable water systems from contamination due to backpressure or backsiphonage, especially in health hazard applications or for monitoring unauthorized water use from fire protection systems.
Extremely compact and lighter than traditional designs, this assembly features a 304 (Schedule 40) stainless steel housing and sleeve, torsion spring check valves, resilient seated gate valves with outside stem and yoke (OSY), test cocks, and a bottom-mounted cast stainless steel relief valve.
An integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve, providing crucial alerts to prevent flooding. The assembly also includes a gallon per minute meter to detect underground leaks or unauthorized water usage.
A WARNING: It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Before installing standard material product, consult your local water authority, building and plumbing codes.
Features
- Extremely compact design, 70% lighter than traditional designs
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304 (Schedule 40) stainless steel housing and sleeve
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Groove fittings allow integral pipeline adjustment
- Patented torsion spring check provides lowest pressure loss
- Unmatched ease of serviceability with replaceable check disc rubber
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UL Classified and FM Approved OSY resilient seated gate valves with tamper switch
- Bottom mounted cast stainless steel relief valve
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Metered bypass (gallon per minute meter) for detecting leakage or theft of water
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SentryPlus Alert® flood sensor on relief valve for flood detection
- Flood alert feature activated with add-on sensor connection kit, compatible with BMS and cellular network communication
