Specification

ഌ

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
Page 2 of 2
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 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™, 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 350DA.
OUTDOOR INSTALLATION
VERTICAL INSTALLATION
PROTECTIVE
ENCLOSURE
12" MIN.
30" MAX.
DIRECTION OF FLOW
DIRECTION OF FLOW