IVAC 572 Variable Pressure Pump Unit powers up and is in good physical condition. Features include a clear and bright digital display, set vol limit, set max pres, set rate, red, vol, inf, read, pres, clear, vol and much more.. This volumetric infusion pump, with its durable metal housing, is one of the few devices on the market which can monitor the patient's arterial blood pressure while infusing. Extremely accurate at ± 2 %, it utilizes linear peristaltic operation, features variable pressure settings, dose limit, and can be interfaced with computer monitoring systems.