FIELD: main fuel lines of engines. SUBSTANCE: gear has body with two measuring spaces and changing-over element one arm of which is pressed against inlet and the other arm to outlet of proper measuring space. Ends of laminated spiral-shaped springy members are attached to adjustment units of arms of changing-over element. Internal surface of body has screw-shaped grooves to whirl solid inclusions contained in measured liquid and form hydraulic lubricant. EFFECT: expanded application field. 2 dwg
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