The Gomco 3020 and 3040 are general use aspirators. Each model generates up to -559 mm Hg of vacuum pressure and a 26 lpm flow rate at open flow. The Gomco 3020 comes with a 600 ml or an 1100 ml collection unit and is ideal for clinics, whereas the Gomco 3040 has a high capacity 2200 ml or 2800 ml collection unit and is better suited for hospitals.