The ZVF 50 is a manual (non-automatic) high flow nozzle for overwing and helicopter refuelling for JET and AVGAS fuels. After several years of development and field testing we have started delivering to customers in March 2015.
More Information, please see:
http://www.elaflex.de/dokumente/download/ElaflexInformation/ELAFLEX_Information_5.13E.pdf