Model GWSP 75 GWSP 150 GWSP 300 GWSP 600 m3/h 3.6 7.2 15.5 31.3 psi â?¤1.2Ã?10-3 â?¤9.0Ã?10-4 â?¤3.8Ã?10-4 â?¤1.4Ã?10-4 Inlet/Exhaust Flange KF25/16 KF25/16 KF25/16 KF40/16 This scroll vacuum pump is suitable for clean processes only Do not pump toxic, explosive, flammable or corrosive substances or substances which contain chemicals, solvents or particles. We will not perform maintenance work on pumps which have used special gases or other hazardous substances. Be sure the inlet gas temperature must be less than 122. Features & Benefits ï??Wide product lineup ï??Suitable for any type of power supply around the world ï??No oil back-diffusion No oil back-diffusion exhaust ï??Repeatedly operated between atmospheric and vacuum ï??Low vibration, low noise and high efficiency ï??Easy of maintenance