Abstract: A fluid pumping device for use in the petroleum and/or chemical industries includes a cast fluid housing having an inlet to or an outlet from the fluid pumping device, a drain/vent tubular connection extending through the cast fluid housing to communicate with the inlet to or the outlet of the fluid pumping device and a flange adapter sealingly secured to the cast fluid housing. A method of providing a drain/vent tube to structurally communicate with an inlet to or the outlet from a fluid pumping device is disclosed.

Abstract: A turbine impeller pump assembly includes a rotating shaft and inboard and outboard casing members coupled together with each having cavity channels, and an annular recess, and an axial opening to receive the rotating shaft. Inboard and outboard liner members are structurally arranged to be received by the annular recesses in the casing members and an impeller member is positioned between the liner members and keyed for rotation with the shaft. The inboard and outboard liner members each have at least two flow channels structurally arranged to cooperate with the cavity channels to provide equal and opposite pressures on the impeller to maintain the impeller in alignment with respect to the liner members.