350ASTDA Double Check Detector Backflow Preventer The 350ASTDA Double Check Detector Assembly protects against both backsiphonage and backpressure in low health hazard, fire protection applications. Its stainless steel body, access covers, internals, fasteners, and springs are corrosion-resistant for reduced maintenance costs. Featuring a metered bypass system, the 350ASTDA efficiently detects leaks and any unauthorized water use. Its single access cover reduces downtime and added costs associated with maintenance and repairs. The 350ASTDA features a short lay-length for compact, versatile installation in horizontal or vertical positions, and is available in a variety of flanged, grooved, or grooved x flanged end connections. Short lay-length ensures easy installation in compact spaces Metered bypass ensures cost-savings related to unauthorized water use and leaks High quality 304L grade stainless steel body and access covers reduces corrosion exposure Compliant with horizontal and vertical installation Lead-free law compliant ASSE® Listed 1048 AWWA Compliant C510 (with gates only), and C550 UL® Classified C-UL® Classified FM® Approved
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