[Stagesound]

don wrote:It’s a valve according to Hoover spares, the part number for it is 49024907 I would suspect it’s some sort of vacuum valve. Yours may have something in it causing the scream or it needs replacing.

Don [h=1][/h]

Many thanks Don – any idea what its purpose is?? Considering how close it is to the motor, I would have thought it is perhaps some form of pressure relief (to relieve the vacuum pressure if the hose becomes blocked etc), but if that’s the case it shouldn’t be operating if the cleaner has been emptied and the hose is clear.

[Author]

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