A portable eduction unit includes a tank, a single first hose for extending into a source of solids and liquid, such hose being connected to the tank through a check valve which opens in response to a partial vacuum in the tank. A hose within the tank has one end supported by a float and communicates with the first hose through a check valve that opens in response to pressurization of the tank, and a shut-off valve for controlling the flow between the first-mentioned hose and the check valves.
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