Vacuum Pumps and Vacuum Generators Single-Stage Vacuum Pumps JB20H-X (“G” BSP 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 A Air Inlet B Vacuum Port C Optional Gauge Port D in. (mm) L1 in. (mm) L2 in. (mm) Air Consumption scfm (l/min.) Vacuum Flow scfm (l/min.) Vacuum Level in Hg (-mmHg) JB20H-X 20 G 1/4″ G 1/2″ G 1/8″ 1.25 (32) 4.65 (118.1) 2.95 (75) 6.10 (170) 4.50 (130) 27 (690)