Bard HVAC 8402-128BX Limit Switch 322838-754 the seat or disc is

the seat or disc is likely wiredrawn or fouled

Multi-Speed Versatility: Features 3-speed taps to allow precise airflow tuning based on specific system static pressure requirements

Flare Connection Seating: Provides a mechanical joint that withstands high-vibration scenarios while facilitating rapid component replacement

ensuring the discharge orifice remains clear of scale and sludge

Bard HVAC 8402-128BX Limit Switch 322838-754 the seat or disc isDesigned for mission critical over temperature protection, the Bard HVAC 8402 128BX Limit Switch is a high reliability L220F 1shot limit switch engineered for forced air heating and air handling units. As a technical professional, you know that a "one shot" thermal link is the final line of defense; once the 220F threshold is reached, the circuit opens permanently to prevent catastrophic heat damage. This OEM replacement part is a direct, identical