Modulating fluid control device

摘要: The present invention relates to a modulating fluid control device for fluid-based heating and cooling system measured environment. comprises body (6), entry port (8) exit (10) valve (12) with actuator (21) located between the ports. In case of three-way valves bypass is also provided thus becoming mixing or diverting valve. responsive input from sensor controller restrict permit flow through dependent upon conditions in improvement characterized that with: (a) (20) means associated therewith position thereby regulate (12), (b) detection (22) measure at location provide feedback signal representative rate. adapted arranged so signals received controller. are maintain required rate as by (22), which promotes desired environmental space.