Fire safe expansible tube type valve
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United States of America Patent
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-
Nov 1, 1983
Grant Date -
N/A
app pub date -
Jul 29, 1981
filing date -
Jul 29, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An expansible tube type valve wherein a flexible tube, which is sealed around its ends in a valve body, is stretched to seal around a barrier in the flow passage. Thin rings of thermal insulation material are disposed around the ends of the flexible tube, interposed between it and parts of the valve body normally in contact therewith, so as to isolate the tube from the body and preclude transmission of high temperatures thereto, as in the event of a fire in the area.
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