Lochinvar & A.O. Smith 100166244 Pressure Switch 30067439-890 it provides the necessary flexibility

it provides the necessary flexibility and tensile strength to withstand fluctuating upstream pressures without compromising the seal

this specific model is calibrated for R-22 refrigerant pressure-temperature characteristics

Look for a blown top membrane

not a hot surface ignitor (HSI)

Lochinvar & A.O. Smith 100166244 Pressure Switch 30067439-890 it provides the necessary flexibilityThe Lochinvar & A. O. Smith 100166244 is a critical OEM boiler replacement part engineered for precise air pressure monitoring within high efficiency heating systems. This 1. 06" WC SPDT pressure switch is a factory certified component designed to ensure the inducer motor or blower is generating sufficient draft before allowing the ignition sequence to proceed. As a Single Pole Double Throw (SPDT) configuration, it provides versatile switching logic,