ASSE 1013-2011|AWWA C511|CSA B64.4|FM Approved|NSF/ANSI 61 Water Quality|NSF/ANSI 372|UL Listed|ULC Listed

• Domestic stainless steel body - 2-1/2 to 8 in FDA epoxy-coated ductile iron body - 10 and 12 in Easy maintenance - no special tools required Snap-in check retainers - 2-1/2 to 6 in Bolted-in checks - 8 to 12 in Low pressure loss as documented by an independent approval laboratory Center stem guided TriForce™ check valves Approved for horizontal flow Made in USA

The Apollo® model RPLF 4A lead-free 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 to 8 in) and the FDA epoxy-coated ductile iron units (10 and 12 in) 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.