Plumbing – How to replace the kitchen sink basket with no lock nut

plumbing

I have a kitchen sink basket that's leaky and has a bunch of gunk caught under it. I want to replace it. All the instructions I see for removing and replacing a kitchen sink basket start by removing the lock nut underneath:

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My sink, however, doesn't have a lock nut. The pressure cup is plastic and I have no idea how to remove it.

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Here's what it looks like from the top. I tried holding that little center piece steady with a screw driver and tried to unscrew the basket from beneath, but it just turns and turns and won't loosen. Any ideas?

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Best Answer

this looks like a chinese unit one of my granite suppliers used to use. they are the biggest piece of junk on the planet. if i remember correctly, the small screw in the middle acts as a retainer for the whole unit. you have unscrew it from above, and it holds the whole thing together. the problem we had was that the screw got locked into the metal insert thats in the lower plastic section and just seizes right up. our solution was a heat gun. just melt the lower bowl and keep pulling it out in chunks until you can get a grinder in and cut the bolt. then throw everything away and start again, using a quality metal strainer assembly