The Maxim™ M500N 4 inch reduced pressure detector backflow preventer assembly is designed to protect drinking water supplies from dangerous cross-connections in accordance with national plumbing codes and water authority requirements. It is ideal for health-hazard non-potable service applications such as fire line, irrigation, or industrial processing, and monitors unauthorized water use.
This assembly prevents 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 or backpressure.
Key Features
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Extremely compact design, 70% lighter than traditional designs
- Housing and sleeve constructed from 304 (Schedule 40) stainless steel
- Equipped with UL and FM outside stem and yoke resilient seated gate valves
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Patented Link Check provides lowest pressure loss
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Groove fittings allow integral pipeline adjustment and easy installation
- Approved for N pattern horizontal installation
- Furnished with a gallon per minute meter to detect leaks and unauthorized water use
- Features corrosive-resistant bottom mounted pressure relief valve and bronze body nickel plated test cocks
- Unmatched ease of serviceability with a single access cover
- Includes replaceable check disc rubber
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. Consult local water authorities before installation.
