The 2-1/2” – 12” Double Check Detector Assembly shall be an Apollo Model DCDALF 4A or DCDA2LF 4A. The assembly shall be manufactured in America and carry a 5-year Apollo factory warranty. The TriForce™ center-stem guided check valves shall feature reversible silicone rubber seat discs. The check valves shall be held in place by SS snap-in retainers (2-1/2” – 6”) or SS studs & nuts (8” – 12”). Access to the check valves shall be by an Apollo quick-connect SS coupling (2-1/2” – 6”) or grooved couplings (8” – 12”). The bodies shall be domestic SS in 22-1/2” – 8” sizes and FDA epoxy-coated ductile iron in 10” & 12” sizes. The assembly consists of a mainline double check valve with a Type 2 bypass (Type 1 optional) 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 while the mainline 2nd check remains closed. Assemblies with the optional Type 1 bypass consist of a lead free* double check valve and meter which bypass both mainline checks and accurately meter all flows up to 2 gpm with the mainline checks closed. The Apollo lead free* ball valve test cocks shall have SS handles. The pressure drop across the assembly shall be documented by an independent laboratory. This double detector check backflow preventer assembly shall prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are non-health hazards.

APPROVALS• ASSE 1048*, CSA B64.5, FM, UL*, cUL*• NSF/ANSI 61 - Water Quality• NSF/ANSI 372 - Lead Free• Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California (2-1/2” - 8” Type 1 & Type 2)*ASSE, UL, and cUL installations must include indicating-type shut-off valves

A Pressure Reducer is a specialised control valve that reduces the input pressure of a fluid to a desired value at its output. When used within drip irrigation ...

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2-1/2" Backflow Preventer, Double Check, Detector Assembly Lead-Free , Stainless Steel Body with Monitored Butterfly Valves Grooved Connections APOLLO 4ALF609E9

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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 (2-1/2”-12”) and Vertical Flow Up (2-1/2” - 8”)• US Patent Nos. 6,443,184; 7,025,085; 7,533,699• Made in the USA (D option)