The 8N2021 is a part of Honeywell's Gas Valve family. It is a self-acting low capacity, slow opening, medium inlet pressure, differential-controlled, gas valve. It is designed to be used with natural gas, LP gas, oil, or air and features a fixed 0.60" adjustable outlet pressure operating range. It has a 1/4" NPT inlet and outlet, with an adjustable range of 2-8 PSI, and includes an internal on/off manual shutoff valve. It is an easy to install and maintain valve, which is constructed of high-quality brass and corrosion-resistant sub-components. The 8N2021 is well-suited for low pressure applications requiring precise control of gas flow rates.