FIELD: hydraulic engineering, hydraulic systems of vehicles. SUBSTANCE: duct with calibrated orifice installed in it is formed between charging manifold and outlet line. Regulator comes in the form of spring-loaded control valve which edge together with edge of bore form throttling slit connecting inlet line with suction manifold. Space under butt of control valve communicates with charging manifold and its control space communicates with outlet line. EFFECT: simplified design of piston pump, reduced power required for its drive. 1 dwg
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