How is the hand (knob) of the hand operated ball valve connected to the valve stem?
Cube column, hand wrench, that is, if you slip out, then point pressure
Normally, there is no such thing. Because it is easy to rust for a long time.Do not use valve repair (can not be removed)
See the end of the valve at the end of a positioning pin, so that the handle is not easy to fall off.
