Hubbell Industrial Controls 69HAU2 Pressure Switch 319848-301 ensure the arrow points in

ensure the arrow points in the direction of the oil flow toward the burner

you must use a specific ammonia-compatible model (typically designated with "SS" or specific "P70L/M" prefixes) that features stainless steel internal components

The 0497281 is an alternative part number often used in specific OEM inventories

The internal debris baffle is a critical feature for technicians

Hubbell Industrial Controls 69HAU2 Pressure Switch 319848-301 ensure the arrow points inThe Hubbell Industrial Controls 69HAU2 is a heavy duty single stage pressure switch designed for reliable performance in commercial air compressor applications. Engineered for demanding industrial environments, this switch features a factory preset of 100 PSI cut in and 125 PSI cut out, with an adjustable range of 20 to 35 PSI to fine tune system pressure requirements. The 69HAU2 series is built with a unloader valve to prevent motor startup under