1" Bronze Backflow Preventer Check Valve, Pressure Reducing, Lead-Free

Apollo™ RP4A / RPLF4A Lead-Free RPZ Assemblies – Commercial-Grade Backflow Prevention

The Apollo™ RP4A and RPLF4A Lead-Free Reduced Pressure Zone Assemblies are engineered for cross-connection control in demanding plumbing systems. These assemblies protect potable water from contamination due to backpressure or backsiphonage, meeting the strict requirements of commercial and industrial applications.

Made in the USA from lead-free bronze alloys (C84400 or C89836), each unit is built for long-term performance and serviceability. The RP4A/RPLF4A models feature top-entry access to check valve cartridges, captured stainless steel springs, and reversible silicone seats, simplifying maintenance without compromising durability. Every assembly is backed by a 5-year factory warranty.

Professional Features & Performance

• Efficient Flow Performance – Independently verified low pressure loss ensures optimal system operation.
• Modular Check Cartridges – Easily accessible internal checks allow fast service or replacement in the field.
• Corrosion-Resistant Design – Includes stainless steel shut-off valve handles, fasteners, and trim for harsh environments.
• Top-Mounted Test Cocks – Designed for streamlined inspection and testing procedures.
• Resilient Elastomers – Chloramine-resistant materials ensure compatibility with chemically treated water supplies.
• Horizontal Configuration – Built for standard horizontal installations commonly found in mechanical rooms and utility layouts.

Technical Specifications

• Models: RP4A and RPLF4A
• Body Material: Lead-Free Bronze (C84400 or C89836)
• Internal Components: Stainless steel springs, silicone seats
• Operating Pressure: Designed for a wide range of pressure conditions
• Certifications: ASSE 1013, CSA B64.4, NSF/ANSI 372
• Installation Orientation: Horizontal
• Warranty: 5-Year Manufacturer Warranty

Installation Guidance for Professionals

The RP4A/RPLF4A is designed with contractor efficiency in mind. No proprietary tools are required for service, and internal access is tool-free. For proper commissioning and compliance, installation must follow local code and include appropriate testing by certified personnel. Adequate clearance for maintenance should be ensured during installation planning.

Why Contractors Choose Apollo™ RPZ Assemblies

Contractors value the Apollo™ RP4A/RPLF4A for its field-proven reliability, low maintenance requirements, and superior flow characteristics. Whether it's installed on irrigation systems, fire protection loops, or commercial water lines, this backflow preventer delivers high performance and code compliance in every application.

Designed for System Integrity and Longevity

• Top-Entry Service Access – Simplifies inspections, repairs, and cartridge replacement.
• Reversible Silicone Seats – Extend component life and reduce maintenance intervals.
• Built for Harsh Conditions – Withstands treated water and demanding environments.
• Five-Year Warranty – A commitment to long-term product confidence and performance.

Backflow Protection That Works as Hard as You Do

The Apollo™ RP4A and RPLF4A are engineered for professional-grade protection in high-risk applications. Built to simplify your job, meet local code, and deliver long-term results, these assemblies are a reliable choice for contractors who demand more from their equipment.