Installation Guide

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Flow Characteristics
Zurn Industries, LLC
| Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446  Ph. 855-663-9876, Fax [phone]
In Canada | Zurn Industries Limited
3544 Nashua Drive, Mississauga, Ontario L4V 1L2  Ph. 905-405-8272, Fax [phone]
www.zurn.com
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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 test-
ing and maintenance. The installation shall be made so that
no part of the unit can be submerged.
Speci cations
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.
PROTECTIVE
ENCLOSURE
DIRECTION OF FLOW
12" MIN.
30" MAX.
SUPPORT
DIRECTION OF FLOW
12" MIN.
30" MAX.
DIRECTION OF FLOW