Answer: eductor

AnswerCrossword Clue
EDUCTORDevice for draining fluids
EDUCTORAnalyzer.
EDUCTORJet pump for fluid withdrawal
EDUCTORDredging pump
eductordevice for inducing a flow of a fluid from a chamber or vessel by using the pressure of a jet of water, air, steam, etc., to create a partial vacuum in such a way as to entrain the fluid to be removed
eductor(in a firearm or gun) the mechanism that after firing throws out the empty cartridge or shell
eductorperson or thing that ejects
eductorone that educes (to draw out)