Vacuum pump for use in vacuum circuit of internal combustion engine of car, has non-return valve arranged to be opened under effect of depression, where valve is allowed to level or exceed side of opening of connector

摘要

The pump has a connector (1) that is utilized for connection to a vacuum circuit, where the connector comprises an opening (2) at its end, and the pump is equipped with a non-return valve (3) or ball type valve. The valve seals the connection to the vacuum circuit in a closed position in the absence of depression generated by the pump. The valve is arranged to be opened under the effect of the depression generated by the pump. The valve is allowed to level or exceed a side of the opening of the connector, where the opening is truncated.