Sandblast shutoff valve
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United States of America Patent
Stats
-
Oct 13, 1987
Grant Date -
N/A
app pub date -
Oct 31, 1986
filing date -
Oct 31, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shutoff valve for use on sandblasting equipment wherein the valve provides a fail safe positive closure of air and sand pressure stream at the nozzle where the operator is. The sand and air pressure stream provides a positive force on the valve assisting the closure and maintaining a tight seal against air and sand infiltration to the nozzle.
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