Note : In order to correct the jamming crane, it will have to be disassembled. You can cope with such a task and without the help of plumbing (locksmith). However, in this case, you need to have an idea of the device and the principle of operation of the ball crane.
Remove the hat.
First of all, the valve of the ball crane is dealt. In the absolute majority of cases, it will be quite enough to solve this task or even ordinary pliers under hand. When disassembly, the butterfly handle must be rotated carefully, slowly and gently. There is no extra effort to do, since the risk will break the crane finally. This is especially true of products created from brass or silumin. They do not differ neither reliability, no strength.
Two.
We unscrew the EUROGayka and dismantle the butterfly handle. After that, we pay attention to how the clamping sleeve is walking inside the crane. If it moves too hard, you should try to pre-weaken it. This is necessary in order to reduce the pressure on the crane seal. By the way, it is an excessive pressure on the gland is the main cause of the jam.
Collect back.
Next, with the help of an adjustable key, you should clean the rod. To do this - we carry out neat, but confident movements in different directions. There is also no extra effort, they can cause the final jamming of the entire crane. If everything was done correctly, then the jamming crane then should start working as new (almost). But before, you should return to your place "Butterfly" and tighten the nut.