Terra Universal, Inc. Diaphragm Oil-Free Pumps 7906-50

Lightweight, compact and quiet Continuous oil-free Pumping Non-Corrosive Vacuum to 9Torr (29.6, in. Hg) No water or oil: dry vacuum, Low maintenance, easy to replace worn parts with a Repair Kit Repairs easy, even "do it yourself" These oil-free pumps are compact, economical and ideal for a variety of general vacuum applications. Simplicity is the key to the economical aluminum design of the pump. As piston wobbles, air resistance on upward stroke expands Teflon seal on piston to increase its efficiency while compensating for the wobble action.