An expansion joint fitting for conveying liquid, the expansion joint fitting having first and second longitudinal ends and a longitudinal axis extending between the opposite first and second longitudinal ends, the expansion joint fitting comprising: a radially inner bellows defining a liquid-conveying passage for conveying liquid between the first and second longitudinal ends of the expansion joint fitting; a radially outer bellows disposed radially outward from and extending around the radially inner bellows, wherein an annular plenum is defined between the radially inner bellows and the radially outer bellows; a first annular coupling flange at the first longitudinal end of the expansion joint fitting, and a second annular coupling flange at the second longitudinal end of the expansion joint fitting, wherein the radially inner and radially outer bellows (216, 218) are coupled to the first and second annular coupling flanges (210, 212), wherein the radially inner bellows includes an annular corrugated body and opposite first and second longitudinal end portions secured to the respective first and second annular coupling flanges (210, 212), wherein each of the first and second longitudinal end portions includes an annular radial segment (226a, 228a) secured to an axial end face of a corresponding one of the first and second annular couplingflange (210, 212); a first annular mounting bracket extending outward from the first annular coupling flange toward the second annular coupling flange, wherein the first annular mounting bracket extends around a portion of the radially inner bellows; and a second annular mounting bracket extending outward from the second annular coupling flange toward the first annular coupling flange, wherein the second annular mounting bracket extends around a portion of the radially inner bellows, wherein the radially outer bellows is secured to and extends between the first and second annular mounting brackets (234, 236); characterized in that the expansion joint fitting further comprises an inlet port secured to the second annular mounting bracket, extending radially outward therefrom, and in fluid communication with the annular plenum; and an outlet port secured to the first annular mounting bracket, extending radially outward therefrom, and in fluid communication with the annular plenum. a radially inner bellows defining a liquid-conveying passage for conveying liquid between the first and second longitudinal ends of the expansion joint fitting; a radially outer bellows disposed radially outward from and extending around the radially inner bellows, wherein an annular plenum is defined between the radially inner bellows and the radially outer bellows; a first annular coupling flange at the first longitudinal end of the expansion joint fitting, and a second annular coupling flange at the second longitudinal end of the expansion joint fitting, wherein the radially inner and radially outer bellows (216, 218) are coupled to the first and second annular coupling flanges (210, 212), wherein the radially inner bellows includes an annular corrugated body and opposite first and second longitudinal end portions secured to the respective first and second annular coupling flanges (210, 212), wherein each of the first and second longitudinal end portions includes an annular radial segment (226a, 228a) secured to an axial end face of a corresponding one of the first and second annular couplingflange (210, 212); a first annular mounting bracket extending outward from the first annular coupling flange toward the second annular coupling flange, wherein the first annular mounting bracket extends around a portion of the radially inner bellows; and a second annular mounting bracket extending outward from the second annular coupling flange toward the first annular coupling flange, wherein the second annular mounting bracket extends around a portion of the radially inner bellows, wherein the radially outer bellows is secured to and extends between the first and second annular mounting brackets (234, 236); an inlet port secured to the second annular mounting bracket, extending radially outward therefrom, and in fluid communication with the annular plenum; and an outlet port secured to the first annular mounting bracket, extending radially outward therefrom, and in fluid communication with the annular plenum.