FAST-RELEASE ADAPTER WITH BUILT-IN CHECK VALVE Russian patent published in 2008 - IPC F16K15/02 

FIELD: mechanics.

SUBSTANCE: invention relates to fast-release adapters with built-in check valves intended for pipelines transporting flowing media. The said check valve is arranged in an additional branch pipe coming out from the main flow section of the said fast-release adapter, while the valve element is arranged to be forced by the pushrod, accessible from outside, against the return force from the closing position, whereat the said element shuts off the medium flow, into the opening position whereat it opens the passage for the said flow. One-piece valve element (10) is arranged inside the valve body and is furnished with a taper gate surface, its seat being formed by a mating taper sealing surface made on the hollow mating part inserted into the additional branch pipe open end and tightly abutting on its inner wall.

EFFECT: higher tightness of pipe joint.

6 cl, 3 dwg