Apollo Lead Free Double Check Valve Backflow Preventer with OS&Y x Mon. Butterfly Shut-Off Valves (Flange x Groove)

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°, 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 & 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” & 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” & 12”
• Easy Maintenance: No Special Tools Required
• Drop-In Check Retainers: 2-1/2”-6”
• Bolted-In Checks: 8”-12”
• Low Pressure Loss as Documented by an Independent Approval Laboratory
• Center Stem Guided TriForce™ Check Valves
• Modular Captured Spring Relief Valve
• Optional Air Gap Drains
• Small Installation Space Required - Small Footprint
• Approved for n-Flow and Vertical Up Flow
• Chloramine-Resistant Elastomers
• Made in the USA (D Option)
• Optional Valve Setters Eliminate Need for Thrust Blocks Below Grade
• US Patent Nos.: 6,443,184; 7,025,085; 7,533,699
• 5 Year Warranty
• Optional Mounting of Bypass on Either Side for Ease of Installation