4" ZURN 350ASTDA Double Check Detector Backflow Preventer

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