Abstract: Pressure independent flow rate control valve, for placement in hydraulic systems between upstream inlet and downstream outlet ducts, including a first functional unit arranged between the inlet and outlet ducts, mobile equipment actuated manually or by an actuator for setting and modifying the orifice span of a fluid passage, and thus the valve flow rate, up to complete closure; and a second functional unit for maintaining the differential pressure constant between upstream and downstream of the first unit, and thus the set valve flow rate independently of pressure fluctuations in the hydraulic system. The mobile equipment includes main equipment and secondary equipment which can linearly translate with respect to the main equipment for presetting the maximum valve flow rate, the main equipment carrying integrally the secondary equipment and being linearly displaced by the actuator for modulating the fluid flow rate from the preset maximum one up to complete closure.

Abstract: Pressure independent flow rate control valve, for placement in hydraulic systems between upstream inlet and downstream outlet ducts, including a first functional unit arranged between the inlet and outlet ducts, mobile equipment actuated manually or by an actuator for setting and modifying the orifice span of a fluid passage, and thus the valve flow rate, up to complete closure; and a second functional unit for maintaining the differential pressure constant between upstream and downstream of the first unit, and thus the set valve flow rate independently of pressure fluctuations in the hydraulic system. The mobile equipment includes main equipment and secondary equipment which can linearly translate with respect to the main equipment for presetting the maximum valve flow rate, the main equipment carrying integrally the secondary equipment and being linearly displaced by the actuator for modulating the fluid flow rate from the preset maximum one up to complete closure.

Abstract: An improved bypass valve, suitable for the connection of terminal units in which a heat exchange occurs between the environment to be conditioned and a thermal-carrier fluid, in particular a liquid, with the lines of delivery or supply and return of the fluid, with these units typically defined by heat exchangers, fan coil units, batteries for air handling units of the AHU (air handling unit) type in the field of HVAC (heating, ventilation and air conditioning), including an H-shaped valve-body with two opposed and parallel tubular elements defining a delivery duct and a return duct joined one to the other and communicating via a transverse element defining a bypass duct, the valve-body integrating, in a monobloc structure, an on-off delivery valve, an on-off return valve and an on-off bypass valve, the latter provided with a linear shutter to enable/disable the circulation of a thermal-carrier fluid through the bypass duct.

Abstract: A ball (1) for valves is described, comprising a substantially ball-shaped body (2), a hole (4, 5) bored in the body (2) for fluid flow passage between the entry and exit of the valve, and a slot (10) cut into the body (2) to house a pin for ball (1) rotation. The ball (1) is produced in a single element, and the hole (4, 5) terminates in a wall (6) in which a specifically shaped opening (12) is cut to regulate the amount of fluid flow between the entry and exit of the valve.

Abstract: A ball (1) for valves is described, comprising a substantially ball-shaped body (2), a hole (4, 5) bored in the body (2) for fluid flow passage between the entry and exit of the valve, and a slot (10) cut into the body (2) to house a pin for ball (1) rotation. The ball (1) is produced in a single element, and the hole (4, 5) terminates in a wall (6) in which a specifically shaped opening (12) is cut to regulate the amount of fluid flow between the entry and exit of the valve.