Reznor 120153 Orifice 320720-756 The Antunes Controls 8221210003 is

The Antunes Controls 8221210003 is a high-precision differential air pressure switch designed for critical monitoring of positive

while the base model number is used for technical identification

preventing the intermittent open circuits or high-resistance faults that lead to costly HVAC system diagnostics and service calls

A built-in thermal barrier protects the actuator from high fluid temperatures

Precise Signal Conversion: Translates low-voltage analog inputs into reliable control signals for gas modulation

Reznor 120153 Orifice 320720-756 The Antunes Controls 8221210003 isThe Reznor 120153 Orifice is a precision engineered #20 burner orifice designed specifically for maintaining consistent gas flow and combustion efficiency in industrial heating systems. As an authentic Reznor replacement part, this 1 2" burner nozzle features a durable steel body with an NPT connection, ensuring a leak proof seal and long term reliability under high thermal stress. For contractors servicing Reznor unit heaters or duct furnaces,