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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Designed with a rugged brass body and durable EPDM diaphragm
ensuring rigorous performance in power boiler applications
Cold Climate Reliability: Essential for systems operating in low-ambient environments where cold-start damage is a frequent concern for contractors
Industrial-Grade Build: Constructed to withstand the thermal stresses found in burner compartments without performance degradation
while the TWN75 rating specifies suitability for wet or damp locations at a maximum of 75°C
Lennox 38M64 Pressure Switch 320788-702 Designed with a rugged brassThe Lennox 38M64 Pressure Switch is a critical safety component designed for precise draft pressure monitoring in residential and commercial HVAC systems. This OEM Lennox furnace part is factory calibrated to a set point of 1. 95" WC (Water Column), providing the exact differential pressure required to verify inducer motor operation and flue gas venting. Engineered as a direct replacement for Lennox 38M6401, this component ensures your furnace or air