Wilkins 350ADA Double Check Detector Backflow Preventer, 2-1/2" to 10", Lead-Free*

The Double Check Detector Backflow Prevention Assembly shall be certified to NSF/ANSI 61, ASSE® Listed 1048, and supplied with full port gate valves. The main body and access cover shall be epoxy coated ductile iron (ASTM A 536), the seat ring and check valve shall be NORYL™ (NSF Listed), the stem shall be stainless steel (ASTM A 276) and the seat disc elastomers shall be EPDM. The first and second check valves shall be accessible for maintenance without removing the device from the line. The Double Check Detector Backflow Prevention Assembly shall be a ZURN WILKINS Model 350ADA.

Compliance:

• Massachusetts Approved, 
• NSF 61
• NSF 372
• ASSE® Listed 1048
• AWWA Compliant C510 (with gates only), and C550, CSA® Certified B64.5, 
• cUPC® Listed
• UL® Classified
• C-UL® Classified
• USC Approved
• FM® Approved

Features:

• Horizontal or vertical installation offers versatility and reduces installation time
• Leak and unauthorized water use detection decreases costs over time
• Patented Compound Check offers reliable performance and improved flow characteristics
• Lack of threads or taps in cover and body reduces corrosion exposure

Keywords: zurn double check valve, Double Check Detector Assembly, Backflow Preventer, Flange Bolts, flange gaskets, Flange Nuts, Poppet Retainer, Poppet Assembly, Seat Retainer, Bulkhead Fittings, Cover Retainer Assembly