| 摘要 |
<p>The invention relates to a valve combination for regulating the flow rate or differential pressure in liquid-carrying heating or cooling systems, comprising a housing (2) which is provided with a feed pipe (10), a discharge pipe (11) and a connection pipe (6) arranged therebetween, and a regulating device (3) which is arranged axially in the connection pipe (6), wherein the regulating device (3) keeps the differential pressure constant at a predefined value by means of a first flow regulating device (4), which is likewise arranged axially in the connection pipe (6) and can be adjusted by an actuating part (8) which projects from the housing (2) and acts on a second seat (24), and by means of a second flow regulating device (5) which is arranged axially or coaxially with respect to the first flow regulating device and can be preset, wherein the flow cross section (9) can be set, which is characterized in that, when an actuator (29) which acts on the actuating part (8) is installed, the flow cross section (9) can be adjusted by means of a handle (7) which is not concealed by the actuator, and in that, when the actuator (29) is installed, the position of the handle (7) can be read on a display device (19) which is not concealed by the actuator, and the display device (19) depicts the presetting of the flow cross section (9).</p> |
