Abstract: A fitting for releasably coupling two structures and for maintaining fluid communication between the two structures has a first and second fitting member. The first fitting member includes a first ferromagnetic coupling element, and the second fitting member includes a second ferromagnetic coupling element. The first and second fitting members are constructed and arranged so as to be moved into engaged relation with one another and to be moved apart from on another so as to be separate from one another. Magnetic attraction between the first and second fitting members maintains the fitting members in engagement, and the fitting members are decoupled by applying force sufficient to overcome the magnetic attraction.