McDonnell & Miller 94-7B Pump Controller R-22 For technicians performing suction line

For technicians performing suction line repair

When diagnosing a loss of hot water or high amperage draw

providing automated cut-off and reset capabilities to protect the heat exchanger from thermal stress and overheating

Precise Manifold Regulation: maintains consistent BTUs when switching to higher-density propane fuel

1 psig differential

McDonnell & Miller 94-7B Pump Controller R-22 For technicians performing suction lineThe McDonnell & Miller 94 7B (Part Number 166300) is a heavy duty combination low water cut off and pump controller specifically engineered for high pressure industrial and commercial steam boiler applications. Built to handle a maximum pressure of 250 PSI, this unit ensures precise water level management across any steaming capacity. It features a No. 7B proportional switch with a 135 ohm potentiometer signal, allowing for seamless integration with