Backup valve question

6XSBChamps

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Jul 12, 2021
289
Longview, Tx
Pool Size
18000
Surface
Plaster
Chlorine
Salt Water Generator
I’ve noticed my backup valve basically being very heavy and sinking down. Seems to be holding water. Vacuum works fine but I assume there’s an issue. Does anyone know much about these? Do they go bad?
77565D78-AF67-4146-B9FE-D8BC7646F84A.jpeg
 
Thanks. Once I have it apart what would be inside that I should be looking for? Is there a filter that may be clogged or anything that would be causing it to hold water?

No filter. Just some gears. Nothing in there should hold water.
 
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