If you need to pump water pump in addition to the actual process of applying steam and water, then you need to configure a pre-separator between water ring pumps and heat exchanger, which makes gas-water separator, and then reach the vacuum suction pump purposes. So water ring vacuum pump is not used alone to pumping.
Liquid ring vacuum pump impeller with blades mounted eccentrically mounted water pump housing, impeller rotates in the pump casing forming a water ring, which acts as a piston, drawn by changing the volume of air to form a vacuum pump. Thus, water ring vacuum pump is pumping gas, rather than liquid. If the water ring pump as the mechanical transmission fluid, then it will lead to water liquid ring pump cavity pump chamber can not be immediately removed causing excessive pressure caused by the pump motor overload, motor phase, the exhaust is blocked and dragging the other impeller components.