The 24A34-2 is a 1-switch sequencer

the nitride construction offers superior durability and resistance to oxidation

Broad Operating Range: Regulates temperature effectively between 140°F and 220°F for versatile application across various Reznor unit heater models

but it must be seated perfectly centered to avoid bypass leaks during the furnace's heat cycle

Schneider Electric (Barber Colman) N800-9422 Diaphragm The 24A34-2 is a 1-switchThe Schneider Electric N800 9422 Diaphragm is a critical replacement component for Barber Colman 2472 series pneumatic actuators. Engineered for high cycle reliability in HVAC terminal unit control, this actuator diaphragm is functionally identical to the legacy 21 840 part number. Field technicians often encounter these in variable air volume (VAV) boxes and damper controls where precise modulation is required. This pneumatic replacement part is