making it suitable for shaft-up

It is a direct 62-25341-81 replacement for aging or failed modules

it is not interchangeable with 2-wire models like the F19-0104

Precision Metering: Size 00 bore provides exact mass flow rates required for low-capacity refrigeration and AC applications

Maintaining proper static pressure and airflow is critical for system longevity

Dwyer Instruments AAFS Switch Refrigerant making it suitable for shaft-upThe Dwyer Instruments AAFS Adjustable Air Flow Paddle Switch is a heavy duty sensing solution engineered to monitor and verify air flow velocity in HVAC and industrial ductwork. Designed to handle air and compatible gases, this unit features a field adjustable SPDT switch, allowing for precise setpoint selection between 200 to 1800 FPM. As the direct replacement for F40AA 2, it offers a drop in upgrade for legacy systems requiring reliable proof of