he Speedaire 4ZM08 Air Regulator is a 1/4 inch NPT air regulator that features a modular connector for easy removal and swap out. It has two full-flow gauge ports and provides multiple pressures from a common inlet. The CFM flow is measured with a 150 psig inlet that is adjusted to set a pressure of 90 psig while increasing flow. The regulator should not be connected to bottled gas.