MFL air-operated vacuum generators are now available in four basic models — two that generate high vacuum levels with high vacuum flow rates and two that generate moderate vacuum levels with high vacuum flow rates and low air consumption. Maximum vacuum is 27.2 in.-Hg and flow is 19.5 scfm. Operating pressures range from 60 to 75 psig in the four sizes.Air-Vac Engineering, (203) 888-9900, www.airvacpumps.com