Abstract: A closed loop system is disclosed for transferring fluid from a fluid storage vessel to a fluid receiving container. The system is adapted to vent the fluid receiving container while preventing discharge of both vapor and fluid into the surrounding environment. The system includes an enclosed fluid receiving container having upper and lower portions. A fluid flow receiving unit is mounted proximate the fluid receiving container. The receiving unit has a pair of spaced fluid ports and a pair of non-spill coupling connectors extending from the fluid ports, one port being a fluid inlet port and one being a vapor-fluid exit port. A movable cover element is provided for selectively covering and protecting the fluid ports and coupling connectors from contaminants when not in use.