| 摘要 |
An arrangement for regulating the output flow and the output pressure of an adjustable pump includes two parallel throttles arranged, respectively, in an output conduit and in a branch conduit; a spring biased multi-way directional control valve is controlled by differential pressure in the branch conduit upstream of the two throttles to adjust the delivery of the pump; manually closed overpressure control valve connects the branch conduit downstream of the corresponding throttle to a tank and a normally open one-way valve connects the output conduit to the branch conduit downstream of the throttles and interrupts the connection as long as the overpressure control valve is open.
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