Product Overview
The Apollo 4A204A4F is a 3/4 in. reduced pressure principle backflow preventer for approved applications that require protection from both backsiphonage and backpressure. Two check assemblies and an intermediate relief valve work together to separate a potable supply from downstream water. If the pressure relationship inside the assembly becomes unsafe, the relief valve can discharge to atmosphere rather than allowing contaminated water to move back toward the supply.
This A4F configuration includes female pipe-thread connections and union shut-off valves, which can simplify isolation and removal during service in a compatible installation. The bronze body, stainless steel handles and springs, chloramine-resistant elastomers, and top-mounted test cocks support routine testing and maintenance. Because discharge is an expected safety function, the installation must include proper drainage, clearance, air-gap protection, horizontal orientation, and freeze protection.
Key Features:
- 3/4 in. RPZ backflow preventer
- Bronze body with FIP connections
- Union shut-off valves
- Stainless steel handles and captured springs
- Chloramine-resistant elastomers
- Accessible test cocks
Common Uses:
- Potable-water cross-connection control
- Irrigation systems requiring RPZ protection
- Residential or light-commercial applications where approved
- Replacement of compatible 3/4 in. RPZ assemblies
Technical Specifications:
- Size: 3/4 in.
- Connections: FIP
- Shut-Off Style: Union valves
- Maximum Operating Pressure: 175 PSI
- Temperature Range: 33-140°F
- Installation: Horizontal
- Approval: USC approved
Installation Notes:
Confirm local approval, hazard classification, drainage, clearance, testing, and freeze-protection requirements. Installation and testing should be completed by qualified personnel.
FAQ:
How does this differ from the 4A204A2F?
This model includes union shut-off valves.
Can the relief valve discharge water?
Yes. Proper drainage is required.
Why Buy From Big Frog Supply?
Big Frog Supply provides clear product information, helpful support, and convenient online ordering for backflow-prevention equipment.
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