Vacuum Pumps and Vacuum Generators Multi-Stage Air Powered Vacuum Pumps Air-Miser – Ideal for Automation Applications Dimensional Specifications for MSP-AM20 Request for Quote Model Number Max Vacuum in. Hg (mm Hg) Vacuum Flow SCFM (l/min.) Air Consumption SCFM (l/min.) Adapters for G to NPT Attachment MSP-AM20 27 (690) 9.88 (280) 2.97 (84) Air consumption and vacuum flow at different vacuum levels (-Hg) at 45 psi. Model Number Air Consumption SCFM (l/min.) Vacuum Flow at Vacuum Level SCFM (l/min.) 0 Hg 3 Hg 6 Hg 9 Hg 12 Hg 15 Hg 18 Hg 21 Hg 24 Hg MSP-AM20 2.97 (84) 9.88 (280) 3.81 (108) 2.80 (79.5) 1.70 (48) 1.18 (33.6) 0.88 (25.5) 0.63 (17.7) 0.38 (10.8) 0.18 (5.1) The “G” thread is a straight pipe thread also known as BSPP, NPS, or G, commonly used in Europe, Asia, and most of the world.