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Home My WebLink About1st on main backflow submittalZurn Industries, LLC | Wilkins 1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766 In Canada | Zurn Industries Limited 3544 Nashua Drive, Mississauga, Ontario L4V 1L2 Ph. 905-405-8272, Fax 905-405-1292 www.zurn.com Rev. E Date: 12/13 Document No. BF-375AST Patent No. 5, 913, 331 Product No. Model 375AST Model 375AST Reduced Pressure Principle Assembly Page 1 of 2 Relief Valve discharge port: 2 1/2" - 6" - 2.75 sq. in. 8" - 10" - 3.69 sq. in. Application Designed for installation on potable water lines to protect against both backsiphonage and backpressure of contami- nated water into the potable water supply. The Model 375AST provides protection where a potential health hazard exists. Ideal for use where lead-free* valves are required. Standards Compliance • ASSE® Listed 1013 • AWWA Compliant C511 (with gates only), and C550 • FM® Approved • UL® Classified • C-UL® Classified • CSA® Certified • IAPMO® Listed • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern Cali- fornia • NSF® Listed-Standard 61, Annex G* • Certified to NSF/ANSI 372* by IAPMO R&T *(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT) Materials Main Valve Body 304L Stainless steel Access covers 304L Stainless steel Coatings FDA Approved electrostatic epoxy finish Internals Stainless steel, 300 Series NORYL™, NSF Listed Fasteners & Springs Stainless Steel, 300 Series Seal rings EPDM (FDA approved) O-rings Buna Nitrile (FDA approved) Sensing line Stainless Steel, braided hose Features Sizes: 2 1/2", 3", 4", 6", 8", 10" 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 Dimensions & Weights (do not include pkg.) MODEL 375AST with NRS & FSC option MODEL 375AST with BG option G B A H D F E G B A C D F E Options (Suffixes can be combined) - with flanged end NRS gate valves (standard) FSC - with epoxy coated wye type strainer (flanged only) G - with grooved end NRS gate valves GF - with grooved inlet gate connection and flanged outlet gate connection FG - with flanged inlet gate connection and grooved outlet gate connection MS - with Integral Relief Valve Monitor Switch OSY - with flanged end OS&Y gate valves OSYG - with grooved end OS&Y gate valves BG - with grooved end butterfly valves with integral supervisory switches (2-1/2" - 6") BF - with flanged end butterfly valves with integral supervisory switches (2-1/2" - 6") BGVIC - with grooved end butterfly valves with integral supervisory switches (8" - 10") Accessories Repair kit (rubber only) Thermal expansion tank (Model XT) OS & Y Gate valve tamper switch (OSY-40) Air gap (Model AG) Electronic Solenoid Timer (Model EST) QT-SET Quick Test Fitting Set ഌFlow Characteristics Zurn Industries, LLC | Wilkins 1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766 In Canada | Zurn Industries Limited 3544 Nashua Drive, Mississauga, Ontario L4V 1L2 Ph. 905-405-8272, Fax 905-405-1292 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 testing and maintenance. The installation shall be made so that no part of the unit can be submerged. Speci cations The Reduced Pressure Principle Backflow Prevention Assembly shall be certified to NSF/ANSI 372, ASSE® Listed 1013, and supplied with full port gate valves. The main body and access cover shall be 304L Stainless Steel, 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 and the relief valve shall be accessible for maintenance without removing the device from the line. The Reduced Pres- sure Principle Backflow Prevention Assembly shall be a WILKINS Model 375AST. ZURN WILKINS MODEL 375AST OUTDOOR HORIZONTAL INSTALLATION DIRECTION OF FLOW PROTECTIVE ENCLOSURE 12” MIN. 30” MAX.