a supply manifold to receive a coolant from a source to distribute the coolant to one or more server chassis, each of the server chassis containing one or more electronic devices, wherein the coolant operates to remove heat from the one or more electronic devices by transforming into a two-phase fluid comprising a liquid portion and a non-liquid portion;

one or more exit manifolds to receive the two-phase fluid having passed through the one or more server chassis;

a separator disposed on an end of the one or more exit manifolds to receive the two-phase fluid therefrom; and

a pump-free conduit connecting the separator and the supply manifold for transferring, due to gravity, the liquid portion of the two-phase fluid to the supply manifold; and

a pump-free supply line connecting the supply manifold and one of the one or more server chassis to provide the one of the one or more server chassis a portion of the coolant using gravity.