High performance, low headloss design, short lay length, lightweight ductile iron body with corrosion resistant low lead. All plastic and stainless steel internal components. 20 – 50mm BSPT threaded Male 65 – 250mm Flanged AS4087-2011 PN16
Designed for installation on potable water lines to protect against both backsiphonage and backpressure of polluted water into the potable water supply. The Model 350 shall provide protection where a potential health hazard does not exist. Ideal for use where lead-free* valves are required.
(Sizes 2 1/2"-10" Horiz. & Vert.)
(Size 12" horizontal)
• ASSE® Listed 1015
• CSA® Certified B64.5
• IAPMO® Listed
• AWWA Compliant C510, and C550
• UL® Classified
• C-UL® Classified
• FM® Approved (2 1/2" - 10")
• Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
• NYC MEA 50-01-M (2 1/2" - 3")
• NYC MEA 297-98-M (4" - 6")
• NYC MEA 316-01-M (8" - 10")
• Meets the requirements of NSF/ANSI 61*
*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Sizes: 2 1/2", 3", 4", 6" , 8", 10" , 12"
Maximum working water pressure: 175 PSI
Maximum working water temperature: 140°F
Hydrostatic test pressure: 350 PSI
(Grooved for steel pipe) AWWA C606
(Flanged) ANSI B16.1
Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted at a minimum of 12" (305mm) and a maximum of 30" (762mm) above adequate drains with sufficient side clearance for testing and
maintenance. The installation shall be made so that no part of the unit can be submerged.
The Double Check Backflow Prevention Assembly shall be certified to NSF/ANSI 61, ASSE® Listed 1015, 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™, the stem shall be stainless steel (ASTM A 276) and the seat disc elastomers shall be EPDM. The checks shall be accessible for maintenance without removing the device from the line. The Double Check Backflow Prevention Assembly shall be a ZURN WILKINS Model 350.
High performance, Low headloss design, short lay length, Corrosion Resistant
Lightweight Stainless Steel body
All Stainless Steel, Brass and Plastic components.
Watermark, UL, FM, USC, NSF Compliant