| 摘要 |
<p>A drain fitting has a vessel formed with a laterally open housing outlet, at least one inlet, and an internal seat at the outlet. A pump is provided in the vessel and has a pump housing secured to the seat and having a pump output extending into the outlet and a pump intake, an impeller displaceable to move liquid through the housing from the intake to the output, and a motor in the housing driving the impeller. A check valve is provided in the pump output for preventing liquid flow back into the pump housing as well as means releasably securing the pump on the seat in the vessel. The pump housing is substantially closed and has its intake substantially lower than its output so that it acts as a gas trap.</p> |
