LP Propane Gas Air Mixer Valve, 1/2", Solid Brass, 300K BTU

For fire pits with high-output burners, you need an air mixer that can keep up. The 300k BTU Propane Gas Air Mixer Valve is engineered to handle large-scale flame systems, providing the critical air-to-gas blending to maximize flame brightness, reduce soot, and maintain cleaner burning performance.

This mixer mounts directly below the burner and connects with standard 1/2" NPT solid brass fittings - no adapters required. Inside, it uses a Venturi-style design: as propane flows through constricted passageways, it creates a vacuum that draws in surrounding air, blending it into the gas stream. This ensures cleaner combustion and less sooty buildup over time.

Rated for 300,000 BTUs, this mixer is ideal for large fire pits or commercial-grade installations. Because it’s built specifically for propane, it helps correct one of propane’s common weaknesses: when burned without air, propane tends to produce black soot. With proper air mixing, you get a much brighter, cleaner flame.

Durable and reliable, the 300k BTU air mixer is a smart choice for anyone designing a bold, high-performance propane fire feature.