Earthquake relief valve

Patent · Tue Apr 18 00:00:00 EDT 1989

OSTI ID:6128837

Diamond, H E

A shock actuated shut-off valve is described, comprising: a valve, having an open position and a closed position, rotatably mounted within a valve body; a valve stem connected to the valve; an elongated handle having a valve stem engagement end and a ball detent engagement end, the valve stem engagement end connected to the valve stem; means for urging the valve to rotate into the closed position; means for stopping further rotation of the valve when the valve is in the closed position; a ball detent; and a pendulum having a ball detent engagement end and a plumb end, the ball detent engagement end supporting the second ball, the pendulum responding to a shock by freeing the second ball, thereby freeing the elongate handle and allowing the valve to move to the closed position.

• Assignee: NOV; NOV-89-063073; EDB-89-107519
• Patent Number(s): US 4821759
• OSTI ID: 6128837
• Resource Relation: Patent File Date: Filed date 12 Feb 1988
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
PIPELINES
SEISMIC EFFECTS
RELIEF VALVES
DESIGN
EQUIPMENT PROTECTION DEVICES
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
OPERATION
PETROLEUM
SAFETY
TRANSPORT
CONTROL EQUIPMENT
ENERGY SOURCES
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
VALVES
022000* - Petroleum- Transport
Handling
& Storage
032000 - Natural Gas- Transport
Handling
& Storage