Apollo – Bronze FIP Pressure Vacuum Breaker 4A Series A2F 3/4″ – 1″

Description

Apollo 4A Series (4ALF-500) Pressure Vacuum Breaker Assembly

Brand: Apollo (Conbraco) SKU: 4A504A2F (3/4″) / 4A505A2F (1″)

Product Details

The Apollo 4A Series Pressure Vacuum Breakers (models 4A504A2F and 4A505A2F) are elite-level backflow prevention devices designed specifically for high-hazard applications. These units solve the danger of back-siphonage, where contaminated water from irrigation or industrial lines is pulled back into the clean, potable water supply. Constructed and featuring a simplified “top-entry” design, these PVBs are the industry standard for protecting residential and commercial water systems. Whether you are outfitting a 3/4″ or 1″ main, the 4A series provides durable, code-compliant protection that is easy to install and even easier to maintain.

Key Features:

• Standard Stainless Steel Hardware: Unlike competitors, Apollo includes stainless steel ball valve handles and nuts as standard to prevent rust and frozen valves over time.
• Modular Maintenance: The “top-entry” design allows all internal components to be serviced in-line without removing the unit from the piping, saving significant time during annual maintenance.
• High-Flow Design: Engineered for minimal pressure drop, ensuring that your irrigation system or fixtures maintain optimal water pressure while remaining fully protected.

Specifications:

• Available Sizes: 3/4″ (4A504A2F) and 1″ (4A505A2F)
• Connection Type: Female Iron Pipe (FIP) Threaded
• Maximum Pressure: 150 psi
• Working Temperature: 33°F to 140°F
• Compliance Standards:
  • ASSE 1020 Approved
  • CSA B64.1.2 Certified
  • IAPMO Listed

Installation & Maintenance Tips:

• Elevation is Key: For the vacuum breaker to function correctly, it must be installed at least 12 inches above the highest sprinkler head or downstream discharge point.
• Vertical Mounting Only: The unit must be mounted in an upright, vertical position to allow the air inlet to open and prevent siphoning during a pressure loss event.
• Freeze Protection: These units contain water and will crack if they freeze. Always drain the device or use a heated R-9 insulated enclosure for outdoor winter protection.

Common Uses/Applications:

• Landscape Irrigation: The primary safety device used to prevent fertilizers and stagnant water from entering the domestic water supply.
• Commercial Wash-Down Areas: Ideal for industrial sinks or wash stations where a hose may be submerged in non-potable fluids.
• Cooling Towers: Frequently used on makeup water lines to prevent chemically treated water from back-siphoning into the municipal main.

Common Questions:

Q: Can these be used to protect against backpressure?

A: No. A Pressure Vacuum Breaker (PVB) is only designed to protect against back-siphonage. If you have a pump or a system that can create backpressure, an RPZ (Reduced Pressure Zone) assembly is required.

Q: Does the “A2F” model include the shut-off valves?

A: Yes. The A2F designation indicates the full assembly, which includes the bronze body, the internal check/float, and two shut-off ball valves with test cocks.

Q: Are repair parts interchangeable between the 3/4″ and 1″ models?

A: Many internal components in the 4A-500 series are shared between the 3/4″ and 1″ sizes, simplifying inventory for contractors and property managers.

With its American-made reliability and superior corrosion resistance, the Apollo 4A Series PVB is the perfect solution for long-term water safety and worry-free regulatory compliance.