Vacuum Pumps and Vacuum GeneratorsANVER Q-VDF Series Adjustable Vacuum Pumps Q-VDF375 Performance and Dimensional Specifications: Model Number Air Consumption vs. Vacuum Level (“Hg) @ 80 PSI 0″ 5″ 10″ 15″ 20″ 25″ Q-VDF375 0 6.20 11.50 17.00 21.00 29.00 Model Number Vacuum Flow (SCFM) vs Vacuum Level (“Hg) @ 80 PSI 0″ 5″ 10″ 15″ 20″ 25″ Q-VDF375 0 14.00 18.50 22.00 26.00 30.00 Model Number A Barrel ID in. (mm) B in. (mm) C Collar Length in. (mm) D in. (mm) E Input F Barrel OD in. (mm) G Collar OD in. (mm) H in. (mm) I Thread J Thread Q-VDF375 0.375 (9.5) 1-1/2 (38.1) 1-3/4 (44.5) 7/8 (22.2) G3/8″ 1 (25.4) 1-3/4 (44.5) 2-3/4 (69.9) G1/2″ G1/2″