I have a 1993 Manufactured home. The cold water shut-off valve is broken in the closed position and the handle just keeps turning. It doesn't leak because I repacked the valve stem from a previous leak. As you can see it is connected to gray somewhat flexible tubing by brass crimps. I am willing to buy the whole valve even though I only need the internal worm gear if I could find one. I have looked everywhere locally here in Tucson, Az. I could shut the water off for the whole house and try to open the valve from the inside, but I would rather replace it. At this time I am not able to have a plumber come in and cut the line, etc. Does anyone know where I can look to find a shut-off valve as pictured? It is a 5/8" line and the inline valve portion is 1/2 ".