ANSI/CAN Z1117|ASSE 1003|IAPMO Listed|NSF/ANSI 61, 372

• Easy installation, no special tools required 2-1/2 to 6 in snap-in check retainers Bolted in checks 8 to 12 in Low-pressure loss as documented by an independent laboratory Center stem guided TriForce™ check valves Approved for horizontal flow

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.