Vacuum Pumps and Vacuum GeneratorsANVER Q-VDF Series Adjustable Vacuum Pumps Q-VDF200 Performance and Dimensional Specifications: Model Number Air Consumption vs. Vacuum Level (“Hg) @ 80 PSI 0″ 5″ 10″ 15″ 20″ 25″ Q-VDF200 0 2.40 3.70 4.70 6.00 6.80 Model Number Vacuum Flow (SCFM) vs Vacuum Level (“Hg) @ 80 PSI 0″ 5″ 10″ 15″ 20″ 25″ Q-VDF200 0 2.20 3.00 4.00 5.20 7.00 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-VDF200 0.200 (5.1) 7/8 (22.2) 1-1/4 (31.8) 5/8 (15.9) G1/8″ 3/4 (19.1) 1-1/4 (31.8) 1-1/2 (38.1) G1/4″ G1/4″