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Cut the repair sleeve from the 12-in. repair coupling stock. Smooth the rough-cut inside edges of the sleeve by inserting the blade of the pipe cutter into the cut ends and turning the cutter until the sleeve will slide over the pipe ends without snagging. Clean the sleeve’s inside edges for soldering with a 3/4-in. dia. wire fitting brush.
1. Shut off the main water supply valve, drain the damaged water line and use a pipe cutter to cut out a section of pipe that extends about 1 in. to each side of the leak. Start by gripping the pipe firmly in the cutter’s jaws and tightening the cutter’s screw. Rotate the cutter in the direction shown—as you tighten the screw handle—until the pipe snaps.
2. Clean corrosion from the inside of the repair sleeve using a wire fitting brush. Clean the outside of the pipe with plumber’s sandcloth or emery paper. Brush flux onto all four cleaned surfaces.
3. Slide an end of the sleeve first over one pipe and then slip it back over onto the other. You may have to loosen nearby pipe hangers. Center the sleeve over the pipe ends so that about 1/2 in. of each pipe is inside the sleeve.
4. Hold the tip of the torch flame to one side of the joint and hold the tip of the solder wire to the opposite side. Pull the solder away when enough of it melts to completely fill the joint.