Armstrong International D503157 Air and Gas Vent Freon This genuine Nordyne replacement part

This genuine Nordyne replacement part is engineered to handle the electrical load of electric furnace heating coils

Its PopTop™ design is a favorite among field technicians

If the 24V HVAC signal is present at the valve terminals but no gas flow is detected at the outlet (checked via manometer)

For a safe and accessible installation

In most field applications

Armstrong International D503157 Air and Gas Vent Freon This genuine Nordyne replacement partThe Armstrong International D503157 Air and Gas Vent is a high performance Series 21AR Cast Iron Fixed Pivot Ball Float designed for the efficient removal of air and gases from pressurized liquid systems. Engineered with a 1 2" NPT connection and a precision 5 64" orifice, this unit is built to manage a maximum operating pressure of 133 PSI. It is technically identical to the 21 AR 1 2 133 model, providing a robust solution for preventing air binding