Steam valve
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United States of America Patent
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-
Oct 16, 2001
Grant Date -
N/A
app pub date -
Jun 27, 1997
filing date -
Jun 27, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Steam valve wherein at least one of the valve plug mating surface or valve seat mating surface has a metal nitride and/or carbide coating thereon. Preferably, the metal nitride and/or carbide coating is on both mating surfaces.
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