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Fluid actuated pipeline valve

Patent ·
OSTI ID:5754982
A pipeline valve is described consisting of: a vertically positioned body, a valve seat positioned coaxially in the body in a horizontal plane, a valve element positioned upstream of the seat and axially movable in the body for movement towards and away from the valve seat whereby the weight of the valve element acts to move the valve element towards the seat, the cross-sectional area of the valve element being substantially less than the cross-sectional area of the body thereby reducing the restriction of flow through the body by the valve element when the valve is opened, first and second hydraulic piston and cylinder assemblies positioned in the body and connected between the valve element and the valve body for moving the valve element away from the valve seat, the first and second assemblies being diametrically opposed to each other and parallel to the longitudinal axis of the body, sealing valve and seat means positioned upstream of the valve seat about each piston and cylinder assembly and adapted to close and seal off the assemblies when the valve is closed, the piston and cylinder assemblies being in communication with the exterior of the body at a location downstream of the valve seat for repairing the assemblies when the valve is closed, and guide means between the valve element and the body for axially guiding the valve element in the body.
Assignee:
Camco, Inc., Houston, TX
Patent Number(s):
US 4577654
OSTI ID:
5754982
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
ACTUATORS
CONTROL EQUIPMENT
CYLINDERS
ENERGY SOURCES
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDRAULIC CONTROL DEVICES
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
PETROLEUM
PIPELINES
PISTONS
POSITIONING
SEALS
TRANSPORT
VALVES