A valve apparatus for use in a fluid delivery system having an inlet tube and an outlet tube, the valve apparatus comprising: a cylindrical base portion having a top end and a bottom end, the bottom end having a priming channel notch and a first and a second pumping channel notches (1112, 1110); and a cylindrical top portion having a proximal end connected to the top end of the base portion and a distal end having a handle; wherein the first and the second pumping channel notches (1112, 1110) are positioned circumferentially and are spaced apart from each other such that when one of the first and the second pumping channel notches (1112, 1110) is positioned to make a fluid contact between an aspiration cavity and either the inlet tube or the outlet tube, the other pumping channel notch (1112, 1110) does not make a fluid contact between the aspiration cavity and the inlet tube or the outlet tube; and wherein the first and the second pumping channel notches (1112, 1110) are vertically offset from the priming channel notch such that: when the priming channel notch is in fluid contact with the inlet tube and the outlet tube, the first and the second pumping channel notches (1112, 1110) are not in fluid contact with the inlet tube and the outlet tube; and when the first and the second pumping channel notches (1112, 1110) are in fluid contact with the inlet tube or the outlet tube, the priming channel notch is not in fluid contact with the inlet tube and the outlet tube; and wherein the priming channel notch has a width that at least spans the inlet tube and the outlet tube. a cylindrical base portion having a top end and a bottom end, the bottom end having a priming channel notch and a first and a second pumping channel notches (1112, 1110); and a cylindrical top portion having a proximal end connected to the top end of the base portion and a distal end having a handle; wherein the first and the second pumping channel notches (1112, 1110) are positioned circumferentially and are spaced apart from each other such that when one of the first and the second pumping channel notches (1112, 1110) is positioned to make a fluid contact between an aspiration cavity and either the inlet tube or the outlet tube, the other pumping channel notch (1112, 1110) does not make a fluid contact between the aspiration cavity and the inlet tube or the outlet tube; and wherein the first and the second pumping channel notches (1112, 1110) are vertically offset from the priming channel notch such that: when the priming channel notch is in fluid contact with the inlet tube and the outlet tube, the first and the second pumping channel notches (1112, 1110) are not in fluid contact with the inlet tube and the outlet tube; and when the first and the second pumping channel notches (1112, 1110) are in fluid contact with the inlet tube or the outlet tube, the priming channel notch is not in fluid contact with the inlet tube and the outlet tube; and wherein the priming channel notch has a width that at least spans the inlet tube and the outlet tube. when the priming channel notch is in fluid contact with the inlet tube and the outlet tube, the first and the second pumping channel notches (1112, 1110) are not in fluid contact with the inlet tube and the outlet tube; and when the first and the second pumping channel notches (1112, 1110) are in fluid contact with the inlet tube or the outlet tube, the priming channel notch is not in fluid contact with the inlet tube and the outlet tube; and wherein the priming channel notch has a width that at least spans the inlet tube and the outlet tube.