JUNCTION OF STRAIGHT PIPE LINES Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: one pipe line has a nipple at its end having inner sealing surface and flowing passageway and the other pipe line with a connecting pipe at its end having outer sealing surface and flowing passageway are interconnected by way of a coupling nut. The connecting pipe is secured to permit longitudinal arrested movement over the fixed cantilever. The flowing passageways of the nipple and pipe line are step. The ratio of the ares of cross-sections of the passageways to the smallest area of the cross-section at the site of contact their sealing surfaces is in the range from 1 to 50 excluding the unity. EFFECT: enhanced reliability. 1 dwg