Abstract: A vacuum operated pumping system is disclosed, and may include a single-, dual-, triple- or multiple-chamber arrangement. In one embodiment, the pumping system comprises a first chamber having a first liquid inlet, a first liquid outlet, and a first air port communicating with a first air line. An inlet conduit communicates with the first liquid inlet and a liquid supply source. An inlet check valve is adapted to prevent liquid from flowing from the first chamber toward the liquid supply source, while an outlet check valve is adapted to prevent liquid from flowing through the first liquid outlet toward the first chamber. A second chamber is provided having a second liquid outlet. The second chamber communicates with the first liquid outlet. A vacuum generator is placed in operable communication with the first air line and a compressed air source. A sensor such as a float assembly detects a level of liquid contained in the first chamber.

Abstract: A vacuum operated pumping system is disclosed, and may include a single-, dual-, triple- or multiple-chamber arrangement. In one embodiment, the pumping system comprises a first chamber having a first liquid inlet, a first liquid outlet, and a first air port communicating with a first air line. An inlet conduit communicates with the first liquid inlet and a liquid supply source. An inlet check valve is adapted to prevent liquid from flowing from the first chamber toward the liquid supply source, while an outlet check valve is adapted to prevent liquid from flowing through the first liquid outlet toward the first chamber. A second chamber is provided having a second liquid outlet. The second chamber communicates with the first liquid outlet. A vacuum generator is placed in operable communication with the first air line and a compressed air source. A sensor such as a float assembly detects a level of liquid contained in the first chamber.