FIELD: engines and pumps.
SUBSTANCE: proposed pump comprises, at least, one piston 2 coupled via appropriate coupler 103, 113 with drive 3 to reciprocate inside cylinder 101. Said cylinder communicates with fluid inlet channel 151 and fluid pressure channel 161, 301. It incorporates also fluid unidirectional control appliance 121, 501 mounted in both aforesaid channels. Pressure channel 301 communicates, downstream of said control appliance 501, with reduced flow discharge element 401, 411, 431, 441.
EFFECT: simplified relieving of hydraulic circuit and design.
10 cl, 3 dwg
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