Patent ID: 7013914

Claim:
Throttle valve, operating between and including a “closed” position and an “open” position for controlling a liquid flow in a central heating or an air conditioning system, said valve comprising: a flow control unit having a first disc and a second disc which are movably mounted relative to each other for setting the desired flow, and which are mounted tight on each other in such a way that said first disc may be rotated relative to said second disc, said first disc exhibiting at least one first flow aperture and said second disc exhibiting at least one second flow aperture, wherein the desired flow is adjustable through the degree of overlapping of said at least one first flow aperture and said at least one second flow aperture, and said at least one first flow aperture and said at least one second flow aperture being designed such that by rotating the first disc relative to the second disc a continuous increase in the flow is achievable, characterised in that said flow control unit comprises a rotation device connected, via a rotatably arranged pipe, with said first disc such that said first disc is rotatable by rotating the rotation device relative to said second disc, wherein the liquid flows through said pipe; and a flow measuring unit exhibiting a measuring body arranged in said pipe such as to be movable in and against the direction of the flow of the liquid within said pipe.