vacuum pump system system included (1) 580 m³/h s/steel double stage liquid ring vacuum pumps, type SIHI LPHA-65320 / BN 135 42 0 ex proof (T3), (1) 4.2 sqm s/steel (1.4571) shell and tube heat exchager, serail # 7032/223, mfd by GESSNER GmbH Germany rated shell side -1/7 bar @ 250 degrees C, volume 43 liter, rated tube side -1/7 bar @ 250 degrees C, volume 34 liter. (1) 150 liter s/steel reciever, mfd by WERK OFFENBACH, serial # 293 rated tube side -1/6 bar @ 250 degrees C, volume 150 liter; rated shell side 6 bar @ 250 degrees C, volume 10 liter.