Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent
1987-03-12
1988-03-01
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Assembling, disassembling, or removing cartridge type valve
1374546, 251 58, 251159, 251161, 251164, 251250, 251292, 251315, F16K 4300, F16K 2500
Patent
active
047279010
ABSTRACT:
A ball valve device for subsea applications, capable of being dismantled for inspection and maintenance without disrupting normal operations of the pipeline and without causing leakage into or out of the pipeline is disclosed. The ball arrangement of the valve has 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. The lower ball member (4) includes two axial withdrawable sleeves (13). When the valve is open, the sleeves (13) can be withdrawn outwardly for intervention with guiders in the valve housing (1) and thereby form a tight, continuous passageway which extends from one of the openings in said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). 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.
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patent: 4506864 (1985-03-01), Hartmann
patent: 4566842 (1986-01-01), Stunkard
Den Norske Stats Oljeselskap A.S.
Walton George L.
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