Jammed Valves - What to do?

Welcome to TFP. Good to have you here.

The blue ring is a threaded collar. Try unscrewing it off the top of the valve (pool water level needs to be lower than the valve, and of course everything turned off). If it's too hard to unscrew, try a strap wrench or maybe an oil filter wrench, and have another go.

Everything is rebuildable, but I can't find that valve. Hopefully someone else here sees it and knows the brand. If you take the top and guts to a pool store, they can probably point you in the right direction. If I had to re-plumb, I'd use Jandy never-lube valves.

When you do it, grease the surfaces with silicone grease.

Good luck with it :)
 
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