Liquid ring pumps are available in single-stage and double-stage designs, and can also be configured as compressors, such as 2BE, and we also specialized in compressors such as SY/2SY，LRC for more versatility. A single set compressor can reach up to 7barG.
The principle of Liquid ring compressor is that the impeller is eccentrically arranged in the pump casing, and a certain amount of water or other liquid is introduced into the pump casing.
So, the answer is Yes! there can be negative pressure on its suction port of the liquid ring compressor. EVP’s 2BE, SY/2SY, LRC series of liquid ring compressors can provide relatively coarse negative pressure （vacuum） at the inlet, such as 70Kpa ABS.
Therefore, if you have any requirements for liquid ring compressor, you can tell EVP and we will provide you with the most appropriate scheme.