Oxygen Liter-Flow Meter PreviousNext Oxygen Liter-Flow Meter 35014-HL 0.0 star rating Write a review For use with oxygen outlets that have a hex nut, including stand-alone outlet 27793. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.