Hoover Air Valve Assembly -...
$15.99
Product details
Switching a Hoover UH72450 Air Pro between hose and floor-nozzle cleaning depends on one valve routing air to whichever path is selected, and this is the complete valve assembly for that job, Hoover part 440004737.
Because the valve sits between the two airflow paths rather than inside either one alone, a fault here shows up in a distinctive way: suction weakens noticeably on one setting while the other still performs normally. That pattern usually points to one of three things going wrong inside the assembly: a cracked valve body, a surrounding seal that has hardened with age and stopped flexing to close properly, or a linkage no longer swinging the valve fully from one position to the other when the control is moved. Any of these three leaves both paths partly open simultaneously, so the air takes whichever route offers less resistance rather than the one actually chosen at the switch.
- Part: 440004737 air valve assembly
- Fits: Hoover UH72450, UH72450CA, UH72450RM
- Function: switches suction between the hose and the floor nozzle
- Sign of failure: strong suction on one setting, weak on the other
The part is sold as a complete assembly rather than as loose internal pieces, since attempting to reseat a single worn component rarely restores a reliable seal on its own. Confirm your machine is the UH72450 or one of its CA or RM variants before ordering, and read the full model number off the rating plate rather than going by the Air Pro name alone, since similar-looking Hoover uprights do not all take the same valve.

