vacuum pump system system included (1) 580 m³/h 316 stainless steel 2- stage liquid ring vacuum pump ex proof (G3), (1) 8.5 sqm s/steel (1.4541) shell and tube heat exchanger, serail # 7033/70, mfd by GESSNER GmbH, Germany, rated shell side -1/6.2 bar @ 350 degrees C, volume 89 liter, rated tube side -1/6.2 bar @ 350 degrees C, volume 56 liter.(2) s/steel reciever.