3\” Backflow Preventer, Reduced Pressure Principal, Lead-Free , Stainless Steel Body with Butterfly Valves Grooved Connections APOLLO 4ALF20009 DESCRIPTIONThe Apollo Model RPLF 4A Reduced Pressure Principle Backflow Preventers consist of two independently acting, TriForce center stem guided check valves with a differential pressure relief valve located between the check valves. The unit is designed to give maximum protection against backflow of health or non-health hazard fluids by either back-pressure or back-siphonage. The durable domestic stainless steel units (2-1/2-8) and the FDA epoxy coated ductile iron units (10 and 12) are easily maintained in the line without any special tools. The TriForce check valves operate with a spring assist in the flowing condition to provide excellent flow rates which are documented by an independent laboratory. FEATURES Domestic Stainless Steel Body: 2-1/2 8 FDA Epoxy Coated Ductile Iron Body: 10 & 12 Easy Maintenance No Special Tools Required Snap-In Check Retainers: 2-1/2 6 Bolted-In Checks: 8 12 Low Pressure loss as Documented by an Independent Laboratory Center-Stem Guided TriForce Check Valves Approved for Horizontal Flow US Patents: 6,443,184; 7,025,085; 7,533,699; 8,240,333 Made in the USA ARRA Compliant PERFORMANCE RATING Maximum Working Pressure: 175 psi Temperature Range: 33 F 140 F Hydrostatic Test Pressure: 350 psi APPROVALS Sizes 2-1/2 8: AWWA C511 Sizes 2-1/2 12: ASSE 1013-2011, CSA B64.4, FM, IAPMO, UL*, cUL* *UL and cUL installations Must Include Indicating-Type Shut-Off Valves NSF/ANSI 61 Water Quality (2-1/2 – 12) NSF/ANSI 372 Lead Free (2-1/2 12) Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California (2-1/2 – 8)
