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 entering the potable water supply due to backsiphonage and/or backpressure. It is 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.

Features

• Extremely compact design, allowing for smaller vaults and enclosures.
• Approximately 70% lighter than traditional designs.
• Constructed with 304 (Schedule 40) Stainless steel housing & sleeve for long-term corrosion protection and maximum strength.
• Features a patented Tri-Link Check design, providing the lowest pressure loss.
• Includes a gallon per minute meter to detect underground leaks and unauthorized water use.
• Groove fittings allow for integral pipeline adjustment.
• Provides unmatched ease of serviceability.
• Approved for N pattern installation and may be used for horizontal or vertical installations.
• Equipped with replaceable check disc rubber.
• Available with grooved gear operated butterfly shutoff valves featuring a tamper switch.