Can I use a single-stage switch to replace this dual-stage model

ensuring proper alignment with the motor shaft to prevent premature bearing failure

Full Accessory Support: Dedicated terminals for 120V humidifiers and air cleaners ensure all system components operate in sync with the blower

matching standard DSI control board specifications

Key Benefits Factory-Calibrated Performance: Fixed at a 4 mA starting point and 16 mA span for consistent proportional control

McDonnell & Miller 64-HD Cut Off Els PW 17895 Can I use a single-stageThe McDonnell & Miller 144400, also known as the 64 HD Head Mechanism, is a heavy duty replacement unit designed for Series 64 and Series 764 low water cut offs. Engineered for both hot water and steam boilers, this mechanical oversight component facilitates an auto reset function to ensure continuous system protection without manual intervention. As a float type LWCO mechanism, it is rated for a maximum boiler pressure of 50 PSI. This unit serves as