This Colt™ 2 1/2 inch double check detector backflow preventer assembly is designed to protect drinking water supplies from dangerous cross-connections, preventing the reverse flow of non-potable water into the potable water supply due to backsiphonage or backpressure. It is primarily used for non-health hazard applications, such as on fire sprinkler systems where monitoring unauthorized water use is necessary.

Key Features

• Extremely compact design, up to 70% lighter than traditional assemblies.
• Constructed with a 304 (Schedule 40) stainless steel housing and sleeve for long-term corrosion protection and maximum strength.
• Features patented Tri-Link Check modules that provide the lowest pressure loss and unmatched ease of serviceability.
• Groove fittings allow for integral pipeline adjustment during installation.
• Equipped with grooved gear-operated butterfly valves with tamper switches.
• Includes a gallon per minute meter to detect underground leaks and unauthorized water use.
• Suitable for horizontal, vertical, or N pattern installations.
• Check discs are replaceable.

Components

• Two independent Tri-Link Check modules
• Single housing with access sleeve
• Four test cocks
• Two drip-tight shutoff valves
• Bypass assembly with a meter (registers in gallon or cubic measurement) and a double check valve assembly
• Integrated supervisory tamper switch on butterfly valves

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.