Vacuum Pumps and Vacuum Generators Single-Stage Vacuum Pumps JB30H (NPT Version) Specifications: Compressed Air: 50 Micron, Filtered, Non-lubricated Operating Temperature: -10 to 80°C (14 to 176°F) Optimum Operating Pressure: 5 bar (72.5 psi) Valve Material: Anodized Aluminum, Brass Nozzle Part No. Nozzle Size D in. (mm) L1 in. (mm) L2 in. (mm) Air Consumption scfm (l/min.) Vacuum Flow scfm (l/min.) Vacuum Level in Hg (-mmHg) JB30H 30 1.34 (34) 6.37 (161.8) 3.81 (97) 14.0 (400) 9.50 (270) 27 (690)