PIPE JOINT Russian patent published in 1997 - IPC

FIELD: pipe line engineering. SUBSTANCE: pipe joint has bushing whose ends are provided with the outer thread, two coupling nuts that engage the end portions of the bushing, and two means for sealing, each of which is interposed between the bushing and the coupling nut. Inside the bushing are the end portions of two pipe lines. Each means for sealing comprises a sealing ring and pressing washer mounted at the end portion of the pipe line. The sealing ring is received in a conical ring groove made on the end face of the bushing. The pressing washer is received in the ring hollow on the nut and interacts with the sealing ring. The pipe joint is provided with a facility for locking the end portions of the pipe line with respect to each other and made up as, e.g., three bolts received in the coupling nut after the sealing means in the direction opposite to that of the pipe line ends to be sealed. EFFECT: enhanced efficiency. 2 cl, 3 dwg