WORLD-CLASS AVIATION REFUELLING SOLUTIONS. Fluid Transfer International based in Nailsworth, Gloucestershire, United Kingdom, designs and manufactures innovative refuelling solutions for the aviation industry, the military, and marine operations, while providing unparalleled support and service. Founded in 1967 Fluid Transfer has been supplying world-class refuelling solutions ever since. Fluid Transfer's state-of-the-art refuelling solutions are used by aviation, marine and military organisations around the globe. Fluid Transfer build a variety of Refuellers, for many applications, ranging from 5,000 Litres for general aviation purposes up to 65,000 Litres high flow units with elevating platforms, ideal for refuelling the latest wide body passenger and cargo aircraft such as the A380 and Boeing B777-X.