Abstract: An aeraulic device for radiant ceiling thermal systems of an internal room is provided. The device may comprise a case body having an inlet opening and an outlet opening, as well as a fan housed by the case body to cause airflow between the inlet opening and outlet opening. The device may be configured to be arranged in an upper volume or plenum of the internal room above a false ceiling of the radiant system. The inlet opening and outlet opening may be configured to be placed in fluid connection with the internal room and with the upper volume or plenum, and in cooperation with at least two openings of the false ceiling. Embodiments of the invention may also comprise a radiant ceiling thermal system provided with the aeraulic device.

Abstract: A flow control valve includes a valve body with inlet and outlet ports, and an intermediate chamber therebetween. The valve further includes a static flow rate regulator for the fluid, accessible from outside the valve body and adapted to vary the cross-section of a passage orifice between the inlet and the outlet of the valve. The valve further includes a dynamic flow rate balancer, regulating flow rate based on a change of the incoming flow rate. The flow rate balancer includes a perforated element interposed between the inlet port and the intermediate chamber, allowing fluid passage only through at least one opening of the perforated element and an elastic element at one face of the perforated element facing the inlet port of the fluid into the valve body. An increase in the inlet/outlet differential pressure corresponds to an enlargement of the elastic element, guaranteeing a constant flow rate.

Abstract: A multiway valve, comprising integrally connected first and second valves. Each valve comprises a valve body comprising a user port, a source port and an intermediate chamber placed therebetween, and a shutter inside the intermediate chamber, having a passage orifice for fluid to pass therethrough. The multiway valve comprises movement means allowing the shutters to move between a closed position where each passage orifice faces the inner walls of the respective intermediate chamber to an open position allowing the passage of the fluid between the user and the source ports through the passage orifice. The first valve comprises a bypass duct formed in the shutter opening in fluid communication with the passage orifice. The bypass duct allows fluid communication between the intermediate chamber, the passage orifice, the duct, and the user and source ports of the first valve when the shutter is in its closed position.