What principle on do these valves work? Single lever valves used in kitchen sink and lavatory faucets or at shower valves has gain popularity in plumbing installation today. This is because these valves are beautiful and are maintenance-free.
A. GATE valve B. Angle valve C. Ball valve D. Globe valve
I think the problem is in the angle valve. I experienced this kind of problem a long time ago. A friend taught me about this kind of problem on how to solve it by myself. But in caseif you encounter that problem again and you don't know what to do. Don't hesitate to call a plumbing expert to help and consult your problem so that it will be early to avoid big damage.