| 摘要 |
An apparatus for moving fluid from a first location to a second location that comprises a housing (12) containing a pump body (16) having a central passageway (18) with a fluid inlet (20) and first (21) and second (22) fluid outlets in communication with the passageway. A shuttle (24) having first (26) and second (28) fluid chambers is movable within the passageway (18) of the body (16) between first and second positions. First (36), second (38), third (32) and fourth (30) generally annular shaped fluid passageways provided in the shuttle (24) permit selective fluid communication between the first (26) and second (28) fluid chambers of the shuttle (24) and the inlet (20) and outlet (21, 22) ports of the pump body (16). First (36) and second (38) inlet passageways provided in the shuttle (24) permits selective fluid communication between the inlet (20) of the pump body (16) and the first (26) and second (28) fluid chambers of the shuttle (24).
|
