FIELD: rocketry, applicable for installation of the stopper after completion of filling operations. SUBSTANCE: the filling device has a valve with a body and a lock member and a stopper with a lock member and a detent mechanism. The detent mechanism is made in the form of a disk with flexible tabs. The latters are arranged around the edges and engageable with the discontinuous bead and stops made on the body on the side of the stopper. The disk is connected to the lock member through a screw pair. EFFECT: enhanced speed of removal and installation of the stopper at a high leak-proofness within a wide range of temperatures. 2 dwg
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