How does a Ford quick disconnect heater hose work?

it is a two pc. plastic connector, the inner pc. fits around the heater core lines (usually light in color) it has two barbs on opposing sides which lock into the outer pc. (usually black in color). the outer part of the connector has openings for these barbs to lock into. there are two tabs at the ends of the connector which must be squeezed in to unlock the barbs (there is a tool for this rent it at your local parts store). the seal is made by the use of o-rings.