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EP2020546A1
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Excess flow valves
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US2007267075A1
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Excess flow valves
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Excessive flow valve
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Gravity-operated gas shut-off valve
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Balanced-flow gas safety valve
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Gas supply safety device
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Connector for tubular members
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Apparatus for relining an underground gas line or the like without excavation
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Connecting or repair device
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CA1164815A
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Method and apparatus for plugging and cutting a gas line or the like without excavation
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DE3128904A1
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Method of, and device for, sealing and dividing underground pipelines without excavating
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FR2510226A1
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Method and apparatus for sealing underground or similar pipeline, especially gas
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CH641262A5
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Method and appliance for blocking off an underground pipe without using a trench
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GB2101261A
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Plugging and cutting a gas line without excavation
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Method for relining an underground gas line or the like without excavation
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Method and apparatus for plugging and cutting a gas line or the like without excavation
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