X-Stream™ Hand Vac

http://nexflowair.com/handvac_how_they_work.php Compressed air enters at point (A) and is allowed to flow into the Hand Vac using the trigger at point (B). Air either exits at point (C) for blow off or point (C) is a vacuum depending on the setup of the generator inside the Hand Vac. Similarly at point (D), air either enters (in blow off mode) or exits (vacuum mode). The generator inside can be reversed to change mode from blow off to vacuum and back again as required.