Porter's trailblazing innovations in measuring and controlling gases in critical applications reach their highest realization and effectiveness in the Porter Nitrous Oxide Sedation Systems. This unparalleled 30 year legacy of precision is your assurance of a sedation system offering the highest attainable levels of patient comfort and system safety, reliability and ease of operation. The entire Porter system, from the precision flowmeter, to the patented Automatic Vacuum Switch, to the double mask scavenger are designed to enhance the patient experience while helping to generate a desirable and dependable revenue stream for you.