IGASI BVC Liquid Ring Compressors IGASI BVC liquid ring compressors offer proven, optimal performance for wastewater treatment, gas compression, aeration and other applications and industries. With a discharge pressure of up to 3 bars, IGASI offers efficient compressors that require little maintenance. Alternative seal fluids can be used when water is not compatible with the process gas. Our compressors, like pumps, can be manufactured in different materials, depending on the need or requirement of the application.