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I'm still trying to fix my kitchen sink. If you click on my name, then look at my public profile, you can go to an album with four pics that show the problem. One pic shows all the pipe that comes up out of the floor (cement slab). There was a pipe nipple threaded into the top. When I removed it, it broke off, and part of it is stuck inside the top of the pipe. One of the pics shows this close up. I've tried to remove the part with the nipple stuck inside it, but I can't tell if it's a coupling I can screw off, or part of the elbow. I stuck a mirror back in there and took a pic of the back side of what I hope is a removable coupling, but I still can't tell if it's a separate piece I can screw off. So, can anyone tell me if this coupling is a separate piece I can remove? I tried with a pipe wrench, but it won't budge. If I can't remove that, how can I get one of the joints apart further down the pipe? If I can get that apart I can then remove the elbow at the top and replace it. There is no place to gripe with a pipe wrench. Is there some special tool I need to do this? The pipe is copper except for the silver sections.
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looks to me like its an old brass to copper slip joint fitting. notice the flats on the nut. what they did was use a galvanized pipe of proper diameter into the brass fitting with a slip joint rubber and graphite packing, then tightened the nut. galvanized pipe and brass do not mix! after years of corrosion due to electrolysis the pipe finally broke off.
now you are stuck with the mess.
take a dremel tool with a diamond cutter wheel and slit the nut at three locations and pry off the pieces. then inside the pipe do the same very carefully with the diamond wheel. don't cut through to the outide. use a small chisel and hammer to chop out the pieces. use what you have available to clean out the orange corrosion from inside the fitting. finally use a half round bastard file to clean out the rest of it. go to a big box store and find a brass slip joint fitting the same size and use it to find a slip joint nut. the rubbers come individual or in a kit. clean off the fitting at home with steel wool and petroleum jelly. then assemble with the new nut and rubbers. size looks to be 1 1/2 inches.
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