FIELD: production of items of caoutchouc, e. g. pneumatic tires. SUBSTANCE: volumetric pump has a cylinder located in the body with inlet door and outlet hole, and a reciprocated piston driven by input shaft. The cylinder and the piston are coaxial in the pump body with a clearance allowed between them. A mean to feed cylinder is located in the clearance. The cylinder is provided with input hole to pass material from the clearance, and output hole with antireturning device. EFFECT: high accuracy and productivity. 10 cl, 7 dwg
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