Patent ID: 8152134

Claim:
A device designed to regulate and control the flow through a valve in a heating and cooling system, the device comprising: a valve body ( 1 ), comprising an inlet side ( 5 ), an outlet side ( 6 ), and a knee ( 3 ), which is machined, for mounting a valve case ( 4 ), the inlet side ( 5 ) of the knee having a measuring nipple ( 2 ) for measuring a pressure on the inlet side and the outlet side ( 6 ) having a measuring nipple for measuring a pressure on the outlet side ( 6 ) to determine a drop of pressure in the valve body ( 1 ) between the inlet side ( 5 ) and the outlet side ( 6 ), the drop of pressure depending on different adjustments of a cone ( 9 ) relative to a valve seat ( 10 ) of a seat ring ( 19 ) and different adjustments of a veil ( 12 ); the seat ring ( 19 ) and the valve seat ( 10 ) are arranged in the valve body ( 1 ) and cooperate with the cone ( 9 ) to form a sealing device to seal the cone ( 9 ) against the valve body ( 1 ); the seat ring ( 19 ) is mounted in a first machining ( 32 ) and a second machining ( 33 ) of the valve body ( 1 ), the second machining ( 33 ) having a slightly larger diameter than the first machining ( 32 ); the cone ( 9 ) cooperating with the seat ring ( 19 ) has a cylindrical portion ( 46 ) with two deep slits ( 49 ) and two shallow slits ( 50 ) which facilitate regulation of the flow through the valve as the cone ( 9 ) is biased between a closed position and an open position; the cone ( 9 ) is mounted on a spindle ( 8 ) which is axially biased by a hand wheel ( 7 ), and a side of the cone ( 9 ) has a flange ( 39 ) which sealingly cooperates with the valve seat ( 10 ) of the seat ring ( 19 ) when the cone ( 9 ) is in the closed position; the veil ( 12 ) in the valve body ( 1 ) surrounds the valve seat ( 10 ) and the cone ( 9 ) and is turned in relation to a passage ( 13 ) in the valve body ( 1 ) to limit a maximum flow through the valve, when the cone ( 9 ) is in the open position, a lower edge ( 15 ) of the veil ( 12 ) is staircase-shaped, which provides a successive increase of flow through the passage ( 13 ) in the valve body ( 1 ) such that the flow through the passage ( 13 ) is variable and depends on a rotational position of the veil ( 12 ); the flow through the valve is controlled via a measurement of the drop of pressure in the valve body ( 1 ) between the inlet side ( 5 ) and the outlet side ( 6 ) of the valve; and the seat ring ( 19 ) has a sealing lip ( 22 ), which seals against an outer diameter ( 20 ) of the cone ( 9 ), a first sealing edge ( 40 ), which seals against a bottom ( 37 ) of the second machining ( 33 ), and a second sealing edge ( 44 ), which seals against the first machining ( 32 ), to form a sealing element and an upper portion of the seat ring ( 19 ) cooperates with the cone ( 9 ) and forms the valve seat ( 10 ).