It also includes useful tools for estimating vapor pressures of different organic or inorganic compounds, calculating hydraulic losses in piping systems under vacuum, determining the proper tail leg height for a vacuum condenser, a calculation routine for converting between mass and volumetric flow rate, and a conversion utility for converting between different units of measure. The software will provide you with utility consumption, equipment size, and drawings of the individual components. You are able to select up to a four-stage ejector system, with or without a precondenser, that includes either surface type or direct contact inter and after condensers. Vacworks II Selection Software Suite Vacworks II is a selection software suite developed by Graham engineers that enables you to select ejector systems or ejectors in combination with liquid ring vacuum pumps. Choose our Vacworks II Selection Software Suite or SealCool Software. Please complete the form below to request Graham software on CD. Does anyone have some suggestions about where (how) to start or a spreadshee. Good afternoon, I am now trying to calculate a steam ejector for vacuum production.