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FLOW CHARACTERISTICS <br /> MODEL 975XL2 3/4", 1", 1 1/4", 1 1/2"& 2" (STANDARD& METRIC) <br /> FLOW RATES(US) <br /> 1.26 2.52 3.8 5.0 3.2 6.3 9.5 12.6 15.8 <br /> a 20 3/4 (zomm) 1^(zsmm) 20 4"132mm) E35 <br /> 137 <br /> w 0 1515 103 0 <br /> W W10 1069W _ _ ul50 20 40 60 80 50 50 100 150 200 250 <br /> FLOW RATES(GPM) <br /> O Rated Flow(Established by approval agencies) <br /> TYPICAL INSTALLATION Capacity thru Schedule 40 Pipe <br /> Local codes shall govern installation requirements. To be Pipe size 5 ft/sec 7.5 ft/sec 10 ft/sec 15 ft/sec <br /> installed in accordance with the manufacturers'instructions 1/8" 1 1 2 3 <br /> and the latest edition of the Uniform Plumbing Code. Unless 1/4" 2 2 3 5 <br /> otherwise specified, the assembly shall be mounted at a 3/8" 3 4 6 9 <br /> minimum of 12"(305mm) and a maximum of 30"(762mm) 1/2" 5 7 9 14 <br /> above adequate drains with sufficient side clearance for 3/a" 8 12 17 25 <br /> testing and maintenance. The installation shall be made <br /> so that no part of the unit can be submerged. 1" 13 20 27 40 <br /> 11/4" 23 35 47 70 <br /> 11/2" 32 48 63 95 <br /> 2" 52 78 105 167 <br /> CENTRAL <br /> STATION OPTIONAL LEAD-FREE STRAINER <br /> ALARM (MODEL SXL) <br /> PANEL <br /> j PROTECTIVE <br /> BATTERY ENCLOSURE MOFFLOW <br /> MONITORSWITCH' <br /> TMIN. <br /> 3W M"XAIR GAP OPTIONAL FITTINGWA"MErERFLOOR FLOOR ORAINDIRECTION <br /> DIRECTION OF FLOW-D OFF <br /> INDOORINSTALLATION OUTDOOR INSTALLATION <br /> (Shown W/optional BMS) <br /> SPECIFICATIONS <br /> The Reduced Pressure Principle Backflow Preventer shall be ANSI 3rd party certified to Comply with states' lead <br /> plumbing law 0.25% maximum weighted average lead content requirement, shall be ASSES Listed 1013, rated to <br /> 180°F, and supplied with full port ball valves. The main body and access covers shall be low lead bronze (ASTM <br /> B 584), the seat ring and all internal polymers shall be NSFS Listed NorylTM and the seat disc elastomers shall be <br /> silicone. The first and second checks shall be accessible for maintenance without removing the relief valve or the <br /> entire device from the line. If installed indoors, the installation shall be supplied with an air gap adapter and integral <br /> monitor switch.The Reduced Pressure Principle Backflow Preventer shall be a WILKINS Model 975XL2. <br /> WILKINS a Zurn company,1747 Commerce Way,Paso Robles,CA93446 Phone:8051238-7100 Fax:805/238-5766 <br /> IN CANADA:ZURN INDUSTRIES LIMITED,3544 Nashua Dr.,Mississauga,Ontario L4V 112 Phone:905/405-8272 Fax 905/405-1292 <br /> Product Support Help Line:1-877-BACKFLOW(1-877-222-5356) • Website:hUp://W .zurn.com <br /> Page 2 of 2 <br />