this unit features a single pole double throw (SPDT) contact function

the STE-1451 is specifically optimized for outside air applications due to its sun shield and weatherproof gasketed housing

0" WC of actual vacuum using a manometer before replacing the component

these part numbers are functionally identical

the C-304 ensures minimal pressure drop while maximizing the reliability and efficiency of 2 to 10-ton cooling units

McDonnell & Miller 150S-MD Controller Freon this unit features a singleThe McDonnell & Miller 150S MD (Part Number 171802) is a heavy duty combination low water cut off and pump controller designed specifically for commercial and industrial steam boiler applications. This model features a snap acting SPDT switch with Maximum Differential operation, which is critical for preventing rapid pump cycling in high demand systems. It is engineered to maintain precise water levels up to a maximum pressure of 150 psi (10. 5 kg