Saved a bunch of money. There's a fitting over the vac line in the pool that has a spring loaded cap to keep it closed when the hose isn't connected.
The pool guy had one with him last week & screwed it in a bit, it got tight after a couple of threads. He said he didn't want to tighten it too much in case it broke.

Well that's not right.. so after he left I removed it. Not only had he cross-threaded it, but he'd failed to notice there was some pool plaster in the threads it screwed into. Somewhat mullared the first two threads of the screw in part, but female threads just peachie.

Couple of days ago I chased the plaster out of the female threads
Today I go to Lowes looking for a new doodad. No luck. ******, this means a visit to Leslies pool store... where, as expected they wanted $42 + 9.75% sales tax for this fine piece of Chinese engineering.

Salesman: "They're about $50"

Me: "I don't need one that badly

******** to that.
Look on Amazon... there's a slew of them priced $20 to $45.

Decide to put my years of filing experience to good use, head to garage & fettle the part with a file. 2 or 3 minutes later I have it looking serviceable. Put down a blanket so I can lay on the concrete next to the pool (ground temp is about 150deg).
Fucker screwed all the way in on the first try. WOOT!!

Job jobbed.