PM61 PowerVac Aspirator Precision Medical designed its line of aspirators with all the needs of the caregiver and patient in mind. It's Powerful: When you need power and performance, the EasyVac aspirator responds with a high performance 1/5 horsepower pump delivering 0-26"Hg (0-660 mmHg) - among the highest in the industry. It's Protected: With quieter performance, the PowerVac aspirator features a dual protection system consisting of a float shut-off in the canister lid and an Inline Hydrophobic Filter to prevent back flow of fluid as well as airborne contaminants from entering the pump. It's long lasting: The Power Vac's ABS plastic cabinet is long lasting, attractive, easy-to-clean and prevents infection. It's Convenient: The Power Vac has an exclusive, moveable canister holder which permits the caregiver to rotate the canister to either side of the unit for better placement near the point of use. It's Safe: Safety is guranteed with the automatic resetting thermal limit switch which prevents the unit from overheating.