The Robuschi RVS Series are robust and heavy-duty liquid ring vacuum pumps, available as a single-stage pump block model, suitable to compress gas and vapours in industrial processes.The pump has an air compressor function similar to the isothermal process. The machine does not use a lubricant to contact the pumped gas.The service liquid can be separated from the gas in a liquid separator and can be recirculated either partially or entirely, after a proper cooling.