Abstract: In some examples, a system configured to remove at least some air and other gases that are dissolved in fuel prior to introducing the fuel into a closed fuel system, such as a closed fuel system of an unmanned aerial vehicle. The system includes a vacuum chamber configured to contain a fuel, a vacuum source attached lo the vacuum chamber and configured to draw a vacuum on a headspace over the fuel in the vacuum chamber, and a fuel pump configured to pump the fuel from the vacuum chamber into a closed fuel container without introducing air into the closed fuel container. In some examples, the pump introduces a fuel substantially free of dissolved gases into the closed fuel system.

Abstract: A multiport severe service ball valve comprising a main bore in fluid communication with a plurality of auxiliary bores arranged about the main bore such that a maximum spacing between a flow control element of the auxiliary bore and an outer surface of the main bore is less than two times a diameter of the main bore. Systems comprising the multiport severe service ball valve and methods of using it are also disclosed.

Abstract: A multiport severe service ball valve comprising a main bore in fluid communication with a plurality of auxiliary bores arranged about the main bore such that a maximum spacing between a flow control element of the auxiliary bore and an outer surface of the main bore is less than two times a diameter of the main bore. Systems comprising the multiport severe service ball valve and methods of using it are also disclosed.

Abstract: A multi-end connector adaptor comprising a main pipe run having a main pipe run connector flange located at the inlet end of the main pipe run; and outlet ends of first and second transverse auxiliary pipe runs having a ball valve type end connector flange comprising a flow bore through the respective flange and an annular landing recessed in the respective flange around the flow bore to receive a seat ring for sealing against a flow control element of a ball valve. Multiport severe service ball valve assemblies, systems comprising the multi-end connector adaptors and methods of use are also disclosed.