Apollo Valves RVA15 15-112 Air Relief Valve

Apollo Valves RVA15 15-112 Air Relief Valve is a compact, brass-bodied automatic vent designed to purge trapped air from pressure piping, boilers, and hydronic systems. The unit features 1/4 in NPT connections and is part of Apollo’s RVA15 series of ASME-listed air-relief valves built to vent air as a system pressurizes. Available variants use suffixes such as B100, B140, and B200 to set different service pressures (100, 140, and 200 psi respectively), ensuring venting occurs at the correct operating pressure for a given system. The B200 version offers up to 173 SCFM of air flow at 10% overpressure and is rated for temperatures up to 325°F, with brass construction for durability in hot-water and steam environments. Typical applications include maintaining fill efficiency and preventing air locks in boilers, closed-loop heating and cooling circuits, and other hydronic or steam piping where automatic air venting is needed. Apollo (Conbraco) positions RVA15 as a reliable, code-listed solution for air relief in ASME-pressure environments.