FEATURES AND BENEFITS

• Short lay-length for small space installation
• Reliable performance and improved flow characteristics from patented Compound Check
• Available in flanged, grooved, or grooved x flanged end connections for installation versatility
• No threads or taps in body or cover, eliminating exposure to corrosion
• Single access cover reduces maintenance down time

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Application

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.

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Standards Compliance :

(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)

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Features

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

End connections

(Grooved for steel pipe) AWWA C606

(Flanged) ANSI B16.1

Class 125

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Typical Installation

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.

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Specifications

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.

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WILKINS 350 ASTL SERIES

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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

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