Apollo - Backflow Preventer, Reduced Pressure, Bronze with Ball Valves and SAE Test Cocks 3/4" - 1"

Product Details

The Apollo 4ALF  3/4" or 1" Reduced Pressure Principle (RPZ) backflow preventer designed to provide maximum protection against back-siphonage and backpressure in high-hazard applications. This lead-free bronze assembly is engineered to protect potable water supplies from contamination. By utilizing a modular relief valve and independent check valves, it ensures that even in a "cross-connection" event, non-potable water is safely discharged rather than entering the clean water main. It is the gold standard for safety in both residential and light commercial plumbing systems.

Key Features:

• Lead-Free Bronze Body: Constructed from high-quality C89836 lead-free bronze, fully compliant with US federal lead-free mandates.
• Modular Check Cartridges: Designed with "Captive Spring" technology, these checks are easily removable and serviceable without the need for specialized tools.
• Top-Mounted Test Cocks: Features four SAE flare test cocks located on the top of the unit for easy access and simplified annual testing.
• Compact Design: The short footprint allows for installation in tight mechanical rooms or protective outdoor enclosures without sacrificing flow performance.

Installation & Maintenance Tips:

• Air Gap Requirements: Always install with an appropriate air gap drain (AGD) to capture relief valve discharge and prevent flooding.
• Freeze Protection: Like all backflow preventers, this unit must be protected from freezing. If installed outdoors, ensure it is housed in a heated or insulated enclosure.
• Flushing the Lines: Always flush supply lines thoroughly before installation to prevent construction debris from fouling the internal check valve seats.

Common Uses/Applications:

• Irrigation Systems: Protects municipal water from lawn fertilizers, pesticides, and stagnant water in sprinkler lines.
• Commercial Kitchens: Prevents backflow from soda fountains, commercial dishwashers, and food processing equipment.
• Boiler Feed Lines: Essential for preventing treated boiler water or chemicals from siphoning back into the drinking water system.

Common Questions:

Q: What is the difference between a DC and an RPZ like this one?

A: An RPZ (Reduced Pressure Zone) provides a higher level of protection by including a relief valve that vents to the atmosphere if the checks fail, whereas a DC (Double Check) does not.

Q: Does this unit come with shut-off valves?

A: Yes, the "A2F" suffix indicates that this assembly includes lead-free bronze ball valve shut-offs with stainless steel handles.

Q: How often does this device need to be tested?

A: Most local plumbing codes require backflow preventers to be tested and certified by a licensed technician annually.