Triple valve blow out preventer

Triple valve blow out preventer

A triple-valve internal blow out preventer having unitary construction is provided, each valve including a tubular assembly having a central passageway with upper and lower seats mounted therein. A ball is rotatably received between the upper and lower seats and includes an external surface and a ce...

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Hauptverfasser: Seneviratne, Padmasiri Daya, Wells, Lawrence, Mason, David B
Format: Patent
Sprache:eng
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creator Seneviratne, Padmasiri Daya
Wells, Lawrence
Mason, David B
description A triple-valve internal blow out preventer having unitary construction is provided, each valve including a tubular assembly having a central passageway with upper and lower seats mounted therein. A ball is rotatably received between the upper and lower seats and includes an external surface and a central opening, wherein the central opening may include an undercut. A protective coating may also be applied to both the external surface and the undercut of the ball to increase the durability of each of the valves.
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title Triple valve blow out preventer
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