PIPELINE CONNECTION DEVICE Russian patent published in 2012 - IPC F16L37/28 

FIELD: machine building.

SUBSTANCE: pipeline connection device includes the joint stationary housing and replaceable housing, with valves with sealing elements arranged in them and installed in grooves of valves, and tightening nut arranged on replaceable housing. In grooves oh valves of stationary housing and replaceable housing there made are through holes connecting internal cavities of grooves to inner cavity of joint stationary housing and replaceable housing; number and size of the above holes is determined from the ratio: where S₀ - total surface area of holes, S_passage - passage area.

EFFECT: avoiding the pressing-out of sealing elements installed on valves in sealing grooves.

4 dwg