Nuclear

Steam, Air or Nitrogen can be used to motivate an Ejector to create a vacuum within a transfer vessel to draw in liquids / slurries. Steam, Air or Nitrogen is not in direct contact with the fluid being pumped.

Once the volume of liquid reaches a preset level in the transfer vessel the Ejector is switched off. The vessel contents can then be simply drained by gravity to the discharge point.

This quantity pumped is dependant on the volume of the transfer vessel, but it is usually used for transferring small quantities of suction fluids.