F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/54
F16K 43/00 (2006.01) E21B 34/04 (2006.01) F16K 5/06 (2006.01) F16K 5/20 (2006.01) F16K 27/06 (2006.01) F16L 55/10 (2006.01) E21B 34/00 (2006.01)
Patent
CA 1295983
ABSTRACT A ball valve device for subsea applications, particularly intended to be connected into subsea pipeline systems which lead a flowing medium (gas and/or oil) in subsea condition, should be capable of being dismantled for inspection and maintenance. The ball arrangement of the valve consists of an upper ball member (3), and a lower ball member (4) in which its upper ball member (3), includes the main packings of the valve, whiles the lower ball member (4) includes two axial withdrawable sleeves (13), which can, when the valve is open, be withdrawn outwards for intervention with guiders in the valve housing (1) and thereby form a tight, continuous passageway which extends from one of the openings in said valve housing (1) to the second opening in said valve housing (1), in which the axial withdrawable sleeve (13) can be moved inwards to a position where it stands free from its other guiders when said ball arrangement rotates during closing of said valve.
531519
Den Norske Stats Oljeselskap A.s.
Macrae & Co.
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