FIELD: mechanical engineering; pumps for handling air and liquids. SUBSTANCE: pump has housing accommodating piston and rod and is provided with members for interaction with electromagnets connected to power source through relay. Rod is installed for axial displacement in holes of electromagnet cores. Members are made in form of spring-loaded iron disks installed for axial displacement at different distance from each other. EFFECT: enlarged operating capabilities and enhanced reliability. 4 dwg
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