Flange ball valve

The utility model provides a flange ball valve, include: a valve body. Case, case rotationally set up in the valve body, revolve torsion arm, the one end of revolving torsion arm is connected with thecase, and the other end that revolves torsion arm stretches out the valve body in order to regard as turn -knob case pivoted turn -knob end, action bars, action bars can be dismantled and be connected with the turn -knob end to drive and revolve the torsion arm rotation, and the action bars has the primary importance of messenger flange ball valve complete closure and the second place that makesflange ball valve open completely, the hole of dodging that is used for the evasive maneuver pole and is offered to limiting plate, limiting plate setting on the limiting plate on the valve body, anddodge the hole and set up in succession along the motion path of action bars by primary importance to the second place. The utility model provides a flange ball valve among the prior art when being inthe open mode, the action b