The 2-1/2'''' - 12'''' Reduced Pressure Detector Assembly shall be an Apollo Model RPDALF4AN or RPDA2LF4AN. The assembly shall be manufactured in America and carry a 5-year Apollo factory warranty. The normally vertical up / vertical down oriented body shall incorporate an internal swivel connection providing the ability to pivot the second check 180 degree, producing a vertical up RPDA assembly (2-1/2'''' - 8'''' only). The TriForceTM center-stem guided check valves shall feature reversible silicone rubber seat discs. The check valves shall be held in place by drop-in retainers (2 1/2'''' - 6'''') or SS studs and nuts (8'''' - 12''''). Access to the check valves and relief valve internals shall be by an Apollo quick-connect SS coupling (2-1/2'''' - 6'''') or grooved couplings (covers) and SS bolts (relief valves) (8'''' - 12''''). The bodies shall be domestic SS in 2-1/2'''' - 8'''' sizes and FDA epoxycoated ductile iron in 10'''' and 12'''' sizes. The assembly is a mainline RP with a Type 2 bypass consisting of a lead free
• single check (SCV) and meter bypassing the mainline second check to prevent backflow while accurately measuring all flows up to 2 gpm with the mainline 2nd check remaining closed. Assemblies with the optional Type 1 bypass consist of a lead free
• RP and meter which bypasses both mainline checks and accurately meters all flows up to 2 gpm with both mainline checks closed. The Apollo domestic ball valve test cocks shall have SS handles. The assembly shall prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are health and non-health hazards. The pressure drop across the assembly shall be documented by an independent laboratory.Domestic Stainless Steel Body: 2-1/2''''-8''''FDA Epoxy Coated Ductile Iron Body: 10'''' and 12''''Easy Maintenance: No Special Tools RequiredDrop-In Check Retainers: 2-1/2''''-6''''Bolted-In Checks: 8''''-12''''Low Pressure Loss as Documented by an Independent Approval LaboratoryCenter Stem Guided TriForce Check ValvesModular Captured Spring Relief ValveOptional Air Gap DrainsSmall Installation Space Required - Small FootprintApproved for n-Flow and Vertical Up FlowChloramine-Resistant ElastomersMade in the USA (D Option)Optional Valve Setters Eliminate Need for Thrust Blocks Below GradeUS Patent Nos.: 6,443,184; 7,025,085; 7,533,6995 Year WarrantyOptional M