I'm updating the kitchen sink in our 40 year old house. Naturally, the drain locations on the new sink will be totally different than the old one. This requires that I undo a portion of the existing wall pipe (which drains into an iron stack within the wall).
Between the wall & sink trap there are 3 pieces of 1 1/2" galvanized pipe and a couple of black (I believe iron) elbows; which were sealed with white (lead?) pipe dope. If I can get one of the galvanized pipes to unscrew from the iron elbow, then connecting the new sink will be fairly easy.
The hard part is how do I break the old, probably frozen, threads loose without breaking some thing else? I have done a bit of this in the past so I'm aware that old pipe can some times be fragile. Are there any good ways to loosen these threads before starting to put a big pipe wrench on them?
Your help here will be very much appreciated.
Richard
Between the wall & sink trap there are 3 pieces of 1 1/2" galvanized pipe and a couple of black (I believe iron) elbows; which were sealed with white (lead?) pipe dope. If I can get one of the galvanized pipes to unscrew from the iron elbow, then connecting the new sink will be fairly easy.
The hard part is how do I break the old, probably frozen, threads loose without breaking some thing else? I have done a bit of this in the past so I'm aware that old pipe can some times be fragile. Are there any good ways to loosen these threads before starting to put a big pipe wrench on them?
Your help here will be very much appreciated.
Richard