Flomatic 6520 Maxiair 1/2″ Air Release Valve | Pump Professionals

Description

The Flomatic 6520 Maxiair is a 1/2-inch automatic air release valve engineered to remove trapped air from pressurized water systems efficiently and reliably. Manufactured by Flomatic, a trusted name in valve technology, the 6520 is designed to operate without manual intervention, continuously venting accumulated air pockets to keep water lines flowing at peak performance.

As a Flomatic Maxiair air release valve, the 6520 features a compact, durable body built to withstand the pressures typical of water distribution and pumping environments. The 6520 air vent valve’s 1/2-inch connection size makes it easy to integrate into existing pipelines with minimal modification. Functioning as a fully automatic air release valve for water systems, it opens to discharge trapped air when pressure differentials are detected and closes tightly once water fills the valve body. It also serves as an air vacuum valve for pump systems, admitting air back into the line during draining or pump shutdown to prevent damaging vacuum conditions. The flomatic air valve construction uses corrosion-resistant materials suited for potable and non-potable water service alike.

The Flomatic 6520 is well-suited for a broad range of applications, including municipal water distribution lines, irrigation systems, booster pump stations, and well water systems where air entrapment is a common operational challenge. It is particularly valuable at high points in pipelines where air naturally accumulates and can cause flow reduction, pressure fluctuations, or complete air locks. Compatible with standard 1/2-inch threaded fittings, the valve installs quickly at pump discharge points, along distribution mains, or at system high points. Contractors, municipalities, and agricultural operators will find the 6520 Maxiair a dependable, low-maintenance solution for sustained system efficiency.