This Colt 4 inch double check detector backflow preventer assembly is designed to prevent 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.

Primary Use

• Ideal for protection at cross-connections identified as non-health hazards such as on fire sprinkler systems and from other contaminants found at the service line entrance.
• Detects underground leaks and unauthorized water use via the included gallon per minute meter.

Features

• Compact construction for smaller vaults and enclosures.
• 70% Lighter than traditional designs.
• 304 (Schedule 40) stainless steel housing and sleeve for long-term corrosion protection and maximum strength.
• Grooved fittings allow integral pipe/line adjustment.
• Patented Tri-Link Check provides the lowest pressure loss and unmatched ease of serviceability.
• Includes grooved gear operated butterfly valves with tamper switch.
• Features a single access sleeve for easy maintenance.
• Can be installed for horizontal or vertical flow.
• Replaceable check disc rubber.
• Includes four test cocks.

Warning: It is illegal to use this product in any plumbing system providing water for human consumption, such as cooking or dishwashing, in the United States. Before installing this item in potable product, consult your local water authority, building, and plumbing codes.