Step 1: Use a ball inflator or pump to inflate the ball. Step 2: Take a bucket filled with water and submerge the ball. Step 3: Look for bubble streams and where they are. Identify leaks and it’s location.
Swipe the hot knife across the leak on the basketball until the vinyl begins to melt. Allow the vinyl to cool and solidify for at least 5 minutes. Push the inflator needle into the ball's valve hole, then re-inflate the ball gently by using a hand pump. Fill the ball to its recommended pressure setting and do not over-inflate. Valve Leak
The air inside the basketball expands as the temperature increases. This will cause air inside the basketball to leak. Also, NEVER pump your basketball in the cold, since it can cause the bladder to explode. The bladder of a basketball is the outside covering that is made of synthetic rubber.
Easy way to replace old leaky air valve / nipple on a basketball or any other ball
Leaking around the stem when on, replace or add to the packing around the stem. Leaking when shut off, replace the washer.
How to Fix Leaks in Sports Balls Locate the Leak. Inflate the ball using a ball inflator or pump. Submerge the ball in a bucket filled with water. Look... Valve Leak Repair. If bubbles emanate from the center of the valve, the ball has a defective valve. First, attempt to... Surface Leak Repair. If ...
This is a video to show people that it is possible to fix your basketball if the rubber valve is damaged or leaking. If you like your ball and want to extend...
Re: Leaking basketball valve. from that site it looked like the replacement kit was like $35-50, which is around the same price as a new ball. I don't think those are replacement kits on the sides, it doesn't look anything like a valve or anything that would be able to pull out the valve (Like in the instructions).