Heil Quaker ICP 1174412 Pressure Switch 30067439-890 Exceptional Buoyancy: The 8-inch diameter

Exceptional Buoyancy: The 8-inch diameter (C8 series) provides high displacement for heavy mechanical valve shut-offs

or a worn oil pump

Whether you are performing a routine upgrade or a critical repair

Adjustments should only be made using a digital manometer to ensure the system remains within manufacturer specifications

Use a multimeter set to continuity

Heil Quaker ICP 1174412 Pressure Switch 30067439-890 Exceptional Buoyancy: The 8-inch diameterThe Heil Quaker ICP 1174412 Pressure Switch is an essential safety component designed for precise airflow monitoring in gas fired furnaces and HVAC systems. As a genuine OEM replacement part, it ensures the inducer motor establishes a proper draft before ignition, preventing hazardous exhaust buildup. This specific low pressure switch is factory calibrated to a normally open state, configured to close when it senses a negative pressure of 0. 45" WC