This unit is great for crash carts or in rooms where vacuum is not piped in but oxygen is available. This unit produces 0-400 mmhg of suction (Pediatric unit produces 0-190 mmhg of suction). Suctioned material goes directly into collection canister. Collection canister has a built-in hydrophobic filter, which protects unit head from overfill contamination. Each unit has two 50 psi oxygen power take-offs with check valves for the attachment of oxygen flowmeters or other equipment. Unit runs off 50 psi oxygen source from the wall or from a 50 psi regulator attached to a cylinder. Suction uses 2-15 LPM - as much as an oxygen flowmeter! It's small in size and lightweight, just 1.5 pounds. Can run suction and use the power take-offs simultaneously.