Abstract: A pressure independent control valve for controlling liquid flow includes a tubular body having an inlet duct and an outlet duct coaxial with each other, a central body arranged therebetween with an axis inclined with respect to the inlet and outlet ducts and including an upstream chamber and a downstream chamber coaxial with each other and communicating through an adjustment orifice, the upstream chamber and downstream chamber suitable for housing a first functional group defined by a control device for controlling the differential pressure between upstream of the orifice in correspondence of the upstream chamber and downstream of the orifice in correspondence with the outlet duct, and a second functional group coaxial to the first functional group and defined by an adjustment device suitable for increasing or decreasing the passage of fluid through the orifice, the device including axial actuation elements both rotationally operable and in axial translation.

Abstract: A handwheel (30) for hydraulic valve provided with numerical indicator of the valve opening level, comprising a base-body (32) or fixed element apt to be stably restrained with respect to the valve-body and supporting a mobile element (34) rotatably coaxial with respect to said base-body (32), connected with a member of maneuver of the valve and provided with a knob (46) apt to be gripped by a user in order to impart a rotation to said maneuver member corresponding to the value or degree of opening required for the valve indicated by figures (50) displayed through an opening or window (48) of said knob, said base-body (32) and mobile element (34) rotatably co-operating one with the other by means of a kinematic continuous coupling with double parallel internal gear.

Abstract: A pressure independent control valve for controlling liquid flow includes a tubular body having an inlet duct and an outlet duct coaxial with each other, a central body arranged therebetween with an axis inclined with respect to the inlet and outlet ducts and including an upstream chamber and a downstream chamber coaxial with each other and communicating through an adjustment orifice, the upstream chamber and downstream chamber suitable for housing, respectively, a first functional group defined by a control device for controlling the differential pressure between upstream of the orifice in correspondence of the upstream chamber, and downstream of the orifice, in correspondence with the outlet duct, and a second functional group coaxial to the first functional group and defined by an adjustment device suitable for increasing or decreasing the passage of fluid through the orifice, the device including axial actuation elements both rotationally operable and in axial translation.

Abstract: A handwheel (30) for hydraulic valve provided with numerical indicator of the valve opening level, comprising a base-body (32) or fixed element apt to be stably restrained with respect to the valve-body and supporting a mobile element (34) rotatably coaxial with respect to said base-body (32), connected with a member of manoeuvre of the valve and provided with a knob (46) apt to be gripped by a user in order to impart a rotation to said manoeuvre member corresponding to the value or degree of opening required for the valve indicated by figures (50) displayed through an opening or window (48) of said knob, said base-body (32) and mobile element (34) rotatably co-operating one with the other by means of a kinematic continuous coupling with double parallel internal gear.