DOUBLE-SEATED VALVE MAINLY FOR CONTAINER FOR TRANSPORTATION AND/OR STORAGE OF USED NUCLEAR FUEL Russian patent published in 1997 - IPC

FIELD: manufacture of fittings. SUBSTANCE: double-seated valve includes body with two seats and two plates interconnected by means of rod. One plate is provided with tail-piece for connecting with drive member. Plates are directed towards each other by their sealing surfaces; rod connecting these plate consists of two parts connected by means of threaded joint. Plate provided with tail-piece is mounted for rotation together with drive member and axial displacement relative to seat and drive member. other plate is fixed against turning. Axial displacement of plates in opening the valve is limited. Arranged in body coaxially relative to rod is shut-off device engageable with plate when valve is open position. EFFECT: enhanced reliability. 2 cl, 2 dwg