CONNECTION JOINT

PROBLEM TO BE SOLVED: To provide a connection joint capable of improving workability and saving labor in connection work, and achieving compactness of a connection part. SOLUTION: This connection joint is integrally formed by synthetic resin moulding in such a way that two first connection parts 91a and 91a are extended on one end side from a middle part 10a, and that two second connection parts 92 and 92 are extended on the other end side. A seal part 641 is integrally formed by a two-color moulding method with each second connection part. Both first connection parts are diagonally extended in such a way that their center axes X and X cross each other on the tip side. A tip interval L1 between both first connection parts is set to be roughly similar to a center interval between a pair of circulation pipes 1a and 1b in a paired tube P covered with a heat shielding pipe 3 and a sheath pipe 4 for protection. Both pipes are simultaneously connected to both first connection parts, and both second connection parts are simultaneously connected to both departure/return headers of a heat source machine. The pair of pipes are forcedly bent by elastic deformation or the like as they are pushed into the first connection parts. They are thus strongly connected to be prevented from coming off. COPYRIGHT: (C)2004,JPO&NCIPI