This flexibility is critical for valve sequencing where multiple valves must operate at different signal pressures from a single controller

even tack if required by the service manual

the 20028401 ensures your Goodman or Amana furnace maintains proper draft verification before the ignition sequence initiates

or if the wheel is physically bent

Leak Prevention: High-density material provides a reliable valve body seal

McDonnell & Miller 193-B Controller Freon This flexibility is critical forThe McDonnell & Miller 193 B Controller is a heavy duty, float operated combination low water cut off and pump controller specifically designed for commercial and industrial steam boiler applications. Engineered to handle a maximum pressure of 150 PSI, the 193 B model features a water column with alternate tappings to simplify integration with existing gauge glass and tri cock sets. This unit utilizes two snap acting SPDT switches (Number 5 switches)