Vacuum Pumps and Vacuum GeneratorsANVER Q-VDF Series Adjustable Vacuum Pumps Q-VDF500 Performance and Dimensional Specifications: Model Number Air Consumption vs. Vacuum Level (“Hg) @ 80 PSI 0″ 5″ 10″ 15″ 20″ 25″ Q-VDF500 0 12.00 22.00 28.00 33.00 45.00 Model Number Vacuum Flow (SCFM) vs Vacuum Level (“Hg) @ 80 PSI 0″ 5″ 10″ 15″ 20″ 25″ Q-VDF500 0 23.00 35.00 40.00 47.00 60.00 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-VDF500 0.500 (12.7) 1-1/2 (38.1) 2 (50.8) 1 (25.4) G3/8″ 1-1/4 (31.8) 2 (50.8) 2-1/2 (63.5) G3/4″ G1/2″