2" Bronze Backflow Preventer Dual Check Valve, Lead-Free

Apollo® DC4A / DCLF4A Double Check Valve Assemblies – Durable, Code-Compliant Backflow Protection

The Apollo® DC4A and DCLF4A Series double check valves provide reliable protection against backflow from non-health hazard sources in commercial, industrial, and residential plumbing systems. Built from lead-free bronze, these assemblies are designed to prevent backpressure and backsiphonage contamination in accordance with national and local plumbing codes.

With a modular check assembly and corrosion-resistant components, the DC4A and DCLF4A are engineered for performance, longevity, and ease of service. These valves are certified for use in potable water systems and come standard with a five-year factory warranty.

Professional Advantages

• Lead-Free Certified Bronze – Constructed from C84400 or C89836 bronze to meet NSF/ANSI 372 for potable water applications.
• Top-Entry Modular Design – Simplifies servicing with quick access to check valve cartridges and internal components.
• Independently Tested Low Pressure Loss – Maintains efficient system performance under varying flow conditions.
• Chloramine-Resistant Elastomers – Withstands chemically treated water, reducing maintenance frequency.
• Ball Valve Shut-Offs – Includes stainless steel handles and fasteners for secure operation and corrosion resistance.
• Top-Mounted Test Cocks – Streamlines compliance testing and maintenance tasks.
• Dual Orientation Installation – Approved for horizontal and vertical (flow-up) configurations, offering site flexibility.

Specifications

• Models: DC4A, DCLF4A
• Body Material: Lead-free bronze
• Check Components: Modular cartridges with reversible silicone seat discs and stainless steel springs
• Pressure Rating: 10–175 PSI operating pressure
• Temperature Range: 33°F – 180°F
• Certifications: ASSE 1015, CSA B64.5, NSF/ANSI 61 & 372, IAPMO listed
• Warranty: 5 years from date of manufacture

Installation and Application

These double check valve assemblies are designed for systems where protection from low-risk backflow sources is required. Installation should be performed by a licensed professional in accordance with local plumbing and cross-connection regulations. The modular design allows for simplified future servicing without full removal of the assembly from the line.

Field-Ready Features

• Quick-Service Modular Checks – Reduces downtime during maintenance and inspection.
• Captured Stainless Steel Springs – Designed for consistent performance and extended valve life.
• Reversible Seat Discs – Extend cartridge life and minimize the need for replacement parts.
• Standard Lay Lengths – Ensures compatibility with common installation configurations.
• Corrosion-Resistant Hardware – Enhances longevity in harsh environments.

Engineered for System Integrity

The Apollo® DC4A and DCLF4A valves are trusted solutions for preventing contamination in potable water systems exposed to moderate backflow risk. Designed for ease of maintenance and built to last, these assemblies offer contractors a dependable product with proven performance and regulatory compliance.