1970's price pfister widespread faucet. The retaining nut to the valve body looks like a flat plate with 4 dimples cut out at 12,3,6 and 9 oclock. Cannot get hold of it to turn and remove from the valve body. The portion above the sink is rusted over.

If you plan on replacing the valve simply cut the sucker out. Good luck, Tom

Tom said it: cut off the spout...

OK, just picked up a hack saw with extra blades at HomeDepot.
Thanks!

You will have to get under the sink, disconnect the water supplies and either cut the nut off with a hacksaw or split it with a sharp chisel, Good luck, Tom

Four blades later the valve body has not budged. I am calling price pfister tomorrow, looks like some kind of tool it need the retaining "nuts" have 4 dents in them like something fit in it. Also the only one of four not corroded topside views has the same kind of nut-plate that is corrode but not rusted like the other three. I am dealing with double sinks in case I was not making any sense. I have changed all 4 water valves, the old ones had the turnoff built in the line itself and were made of some type of bendy brittle metal. So those are gone. Please keep comments coming need all the advice I can get.

Hi Yellowrose...

If I know the thick "retainer nuts" you are talking about, the nuts have dimples in them not for a tool to sit in but for the dimples to project upward to the sink... keeps the nut from spinning loose.

Have you tried to get a BASIN WRENCH on the nut? If not, you could try purchasing a cheap basin wrench and see if you can grab the nut using that (see image). This wrench is made to get up and under the sink in those really tight spots.

I hate to see you go off to home depot again, but this tool usually works on those retainer nuts.

Let me know what you think, OK?

Mark

The "nut" is too big, the brasscraft basin wrench doesn't open wide enough. I also bought a ridgid sink install basin wrench tool thing. No luck

Can you take a hammer and chisel and start the nut counterclockwise? Have you used WD-40 to lube the threads? Could you split the nut using a sharp chisel? You sdhouldn't be having this much trouble. Regards, Tom

After all the work you have described I think I would start looking at taking the sink out so I could get to the nuts. I'd probably throw the faucet and sink in the trash and start with new. A stainless steal kitchen sink does not cost enough to justify this much frustration in my opinion.

Can't take sink out, it is in the counter, cultured marble double sink and counter. These are lavatory fixtures.

SUCCESS!! Got the sharp chisel and broke those locking nuts!!
Thanks Tom aka Speedball! For hanging in there with me and brainstorming.
Believe it, I will be back on this forum in the future.