This 6 inch Lead Free Double Check Detector Backflow Preventer Assembly prevents the backflow of non-health hazard pollutants from entering the potable water supply system. It is primarily used on fire line sprinkler systems when monitoring unauthorized water use is necessary.

Its compact housing features two independently operating tri-link check valves, two shutoff valves, and four test cocks, offering robust protection against both backpressure and backsiphonage in non-health hazard applications. This assembly is designed for continuous pressure service.

Construction & Design

• Lead Free* construction
• Extremely compact design, approximately 70% lighter than traditional designs
• Housing and sleeve are made from 304 (Schedule 40) stainless steel for durability
• Groove fittings allow for integral pipeline adjustment
• Unique tri-link spring check design provides the lowest pressure loss
• Unmatched ease of serviceability for maintenance
• May be installed in horizontal, vertical, or N pattern configurations
• Reversible elastomer discs in tri-link checks for drip-tight closure

Key Features

• Equipped with UL/FM grooved gear operated butterfly valve shutoffs with tamper switches
• Includes a bypass assembly with a gallons per minute meter for monitoring water usage
• Designed to protect against backflow caused by backpressure or backsiphonage

*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.