EP2626605

• GREINER S.P.A.since Aug 13, 2013

An on/off valve (1) for a fluid flow is described, comprising a main valve body (2) provided with at least one inlet duct (5) and at least one outlet duct (6), at least one shutter (3) provided with at least one through duct (7) in its inside, and rotatably accommodated in at least one recess (4) of the valve body (2) for its rotation between at least one open position of the valve and at least one closed position of the valve. In addition, the valve comprises at least one bypass duct (8) for the direct, or indirect, fluidic connection of the inlet duct (5) with the outlet duct (6) of the valve, at least when the shutter (3) is in at least one closed position of the valve. A method for guaranteeing the passage of a minimum amount of fluid flow by the on/off valve is described as well.