| 摘要 |
A constant-flow valve assembly (1) comprising a first adjustable choke valve (4) and a second choke valve (6), in which the relative position of a movable sealing piston or diaphragm (46) determines the opening of the second choke valve (6), and in which a supply pipe (10) communicates with the first choke valve (4) and the piston or the diaphragm (46), insofar as fluid from the supply pipe (10) drives the piston or the diaphragm (46) in the closing direction of the second choke valve (6), and in which the outlet (15) of the first choke valve (4) communicates with the inlet of the second choke valve (6), and in which fluid from the outlet (15) of the first choke valve (4) drives the piston or the diaphragm (46) in the opening direction of the second choke valve (6), and in which the second choke valve (6) communicates with an outlet (60) located downstream thereof, and wherein at least one first choke valve (4) is located in a manifold (2) separated from the second choke valve (6), the outlet (15) of the first choke valve (4) being connected to the inlet (16) of the second choke valve (6) by means of a pipe connection (18). |
