Find the exact source of the leak because pipe leaks in the middle of a straight run might use a quick fix method that is different from what is needed near a pipe fitting.
Repairing 3 inch copper drain pipe.
The key to a good.
You must have the ability to create a suction inside.
Once the water supply is shut off decide how to fix a leaky pipe temporarily to prevent damage until a more permanent repair can be made.
Mark the leak shut off the main water valve and drain or thaw and drain the affected pipe.
The simpler repair that i use for pin hole leaks is that i wrap the pipe and the leak with gasket rubber which is about 3 32 thick and i cut it about an inch wide.
When repairing a section of pipe in an existing run don t try to cement solvent weld all the new couplings.
You can t flex them enough to slide on that last fitting and get it to seat fully.
Pipe repair clamps secure pipe in place so that repairs can be made to damaged corroded or leaky water and gas pipes.
Rather than struggle with cement pros use a mission coupling photos 3 and 4.
Cut out the damaged section photo 1 then measure the gap and from the sweat coupling cut a repair piece that s 1 in.
View more view all sort filter.
If the pvc is part of the drainage system don t run water into the drains during the repair.
I secure the gasket material with a pipe clamp the kind that has slots along most of its length and has a screw type mechanism to tighten and compress the rubber.
Longer than the damaged section.
Step 2 cover or plug all holes in the pipe drains or access holes using the drain stoppers built into the sink s drain.
Most drain systems use rigid pipes fairly large in diameter.
You can buy a sweat coupling sized to repair 1 2 in.