This Colt™ 4 inch reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply due to backsiphonage or backpressure.

It is ideal for protecting health-hazard cross-connections such as on fire sprinkler systems and at service line entrances from contaminants.

Product Design & Protection

• Features a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve.
• An add-on connection kit (sold separately) is required to activate the flood sensor, enabling relay of alerts for potential flooding events.
• Includes domestic outside stem and yoke (OS&Y) resilient seated gate valves.
• The assembly contains two independent Link Check modules and a differential pressure relief valve.
• A metered bypass with a cubic feet per minute meter helps detect underground leaks and unauthorized water use.
• Extremely compact design, approximately 70% lighter than traditional assemblies.
• Unmatched ease of serviceability with a patented link check for lowest pressure loss and replaceable check disc rubber.

Construction

• Housing and sleeve are constructed from 304 (Schedule 40) stainless steel pipe with groove end connections.
• Bottom-mounted cast stainless steel relief valve.
• Lead-free* bronze body test cocks.
• Elastomers are made from EPDM, silicone, and Buna 'N'.

WARNING: It is illegal to use this product in a plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Consult local water authority, building, and plumbing codes before installation.