Direct Replacement: Precise fitment for the ASCO 318-247 eliminates the need for field modifications or hardware adjustments

Enhanced Durability: Constructed with high-temperature alloys to resist flame sensor corrosion and oxidation over extended run cycles

023 diameter opening to meet factory specifications

making it ideal for bypass or mixing applications where precise thermal control is required

When you're out on a service call and find a bulging or leaking capacitor

Reznor 193810 Switch 30067439-890 Direct Replacement: Precise fitment forThe Reznor 193810 is a heavy duty air proving switch pre mounted in a protective enclosure, engineered specifically for Reznor HVAC systems. Designed for reliability in demanding commercial and industrial environments, this differential pressure switch acts as a primary safety mechanism to verify proper combustion airflow before allowing the ignition sequence to proceed. It serves as a direct OEM replacement for legacy part numbers including Reznor