Bosch 7098822 Air Vent Revision Set

- Complete service kit for rebuilding automatic air vents on HVAC systems.

- Purges trapped air from the water side to prevent noisy, air-bound operation.

- Restores efficient circulation and heat transfer.

- White cylindrical float mounted on a formed stainless steel actuating arm.

- Heavy hexagonal lock nut with machined internal threads for secure housing mounting.

- Vent cap fitted with a manual bleed knob for on-demand air release.

- Perimeter sealing gasket on the cap for a leak-free seal.

- Slotted metal pivot lever on the underside of the cap closes the valve as water rises.

- Valve reopens automatically as collected air lowers the water level.

- Matched set installs without disturbing surrounding piping.

- Replaces only the vent internals rather than the larger component served.

- Alternate part number 7-098-822.

The Bosch 7098822 Air Vent Revision Set is a complete service kit for rebuilding the automatic air vent on HVAC systems, restoring the vent's ability to purge trapped air from the water side so the system circulates quietly and transfers heat efficiently instead of running noisy or air-bound. Rather than patching a single worn part, the set supplies the full working assembly: the white cylindrical float on its formed stainless steel actuating arm, the heavy hexagonal lock nut with machined internal threads that secures the vent to the housing, and the vent cap fitted with a manual bleed knob and a perimeter sealing gasket. The float and lever linkage is what makes the vent work, and it is the part of the kit that matters most in service. As the water level in the vent chamber rises, the float lifts the wire arm and pivots the slotted metal lever seated on the underside of the cap, closing the valve against its seat, then reopening it as air collects and the level falls again. Because the float, arm, lever mechanism, gasket, and mounting nut all arrive together as a matched set, the vent returns to dependable automatic operation without disturbing the surrounding piping or replacing the larger component it serves.