Abstract: An improved breast pump comprised of a manifold having a cavity and plurality of openings. A horn is positioned in one of the openings for coupling the mother's breast with the cavity. A first fixed cylinder is formed integrally with a second opening of the manifold with a second cylinder slidingly received over the first cylinder for effecting a pumping action therebetween to create a reduced pressure within the horn, cavity and cylinders. A third opening is for the coupling of a baby bottle therewith. A ball valve is located within the third opening whereby when the second cylinder is reciprocated with respect to the first cylinder and a vacuum created in the horn, cavity and cylinders, the ball valve will seal the third opening and the bottle from the cavity and suck milk from a mother's breast located in association with the horn.