Valve assembly for purging particulates from a steam piping system
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United States of America Patent
Stats
-
Sep 17, 1985
Grant Date -
N/A
app pub date -
Feb 7, 1984
filing date -
Feb 7, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve assembly mountable in a debris strainer device installed in a steam piping system. The valve assembly includes a retractile valve stem cooperating with a conduit branch of the strainer device to form a short clearance chamber which restricts the amount of fluid which can collect in the chamber when the valve is closed. The valve stem is retractable initially to allow for substantially constant bleeding of discharge effluent prior to full retraction of the valve stem to fully open the valve for achieving 'blow-off' or the blast of particulate discharge through the valve.
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