| 摘要 |
An energy-saving control arrangement (10) satisfying the most stringent sealing requirements is proposed. The directional control valve (12) of the control arrangement (10) is of seat-valve type of construction. A seat valve body (53) of this directional control valve (12), which seat valve body (53) has a fine-control bevel (66), controls in lifting position (44) the load pressure via a second control line (46) into a pressure space (32) of a control member (29) to enable a servomotor (15) to be controlled independently of load. In addition, the control member (29), assigned to the functions of a reversing valve and a pressure-compensation valve, is provided with an orifice (35) and part of a three-way flow-control valve (23) which supplies a second servomotor (16) with a constant flow. The simple control arrangement (10) of compact construction realises control of a first servomotor (15) independently of load at maximum tightness with the supply of constant flow to a second servomotor (16) with only one control member (21). <IMAGE>
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