These single stage KNF diaphragm vacuum pumps have a flow rate of 5.5 L/min (0.19 CFM) and a vacuum of 4.7 inHg (120 Torr). These 100% oil free diaphragm pumps are ideal for use in emission measurement technology, mobile gas measurement, medical technology and instrumental analysis. With a PPS(Polyphenylene sulfide) pump head, PTFE structured diaphragm and FFPM valves, the UN86KTI is built to be resistant to more aggressive gasses and copes very well with vapor and condensation. Built to Last, KNF pioneered in the use of solid PTFE materials for its vacuum pumps over 45 years ago. These products are legendary for their low-maintenance and robust design.