Backflow Preventer Double Check Assembly With Butterfly Valve, Series/Model: Model DCDALF4A, Nominal Size: 2-1/2 IN, Connection Type: Grooved End, Pressure Rating: 175 PSI, Temperature Rating: 33 - 140 DEG F And 180 DEG F Intermittent, 304 Stainless Steel Body Material, Trim Material: Chloramine-Resistant Silicone Seat Disc, Industry Standards: ASSE 1048, CSA B64.5 Certified, UL, ULC Classified, FM Approved, US Patent Numbers 6443184, 7025085, 7533699, ISO 9001-2008 Registered, 28 IN Width, Lead Free: Yes, Other Physical Dimension: 17 IN Depth, 8 IN Inlet Center To Top Of Valve

The 2-1/2 - 12 IN 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 IN) or SS studs and nuts (8 - 12 IN). Access to the check valves shall be by an Apollo® quick connect SS coupling (2-1/2 - 6 IN) or grooved couplings (8 - 12 IN). The bodies shall be domestic SS in 22-1/2 - 8 IN sizes and FDA epoxy-coated ductile iron in 10 and 12 IN 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. the assembly shall prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are non-health hazards.

• Domestic stainless steel body
• FDA epoxy coated ductile iron body: 10 and 12 IN
• Easy maintenance - no special tools required
• Snap-in check retainers: 2-1/2 - 6 IN bolted-in checks: 8 - 12 IN
• Low-pressure loss as documented by an independent laboratory
• Center-stem guided TriForce™ check valves
• Approved for horizontal (2-1/2 - 12 IN) and vertical flow up (2-1/2 - 8 IN)
• 5 YR warranty
• Made in the USA

• Brochure/Catalog https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/1504A107A2FDC_Broc.pdf
• Instruction/Installation Manual https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/ApolloValves_4ALF-629-E9_Instruction_Installation_Manual.pdf
• Specification Sheet https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/ApolloValves_4ALF-629-E9_Specification_Sheet.pdf
• Submittal Sheet https://www.macombgroup.com//ASSETS/DOCUMENTS/ITEMS/EN/ApolloValves_4ALF-629-E9_Submittal_Sheet.pdf