DIAPHRAGM VALVE
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United States of America Patent
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N/A
Issued Date -
Nov 6, 2014
app pub date -
Nov 27, 2012
filing date -
Dec 6, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
There is provided a diaphragm valve configured to prevent a body from being scratched significantly even when replacement of a seat is repeated. A body 2, a seat 4 arranged on a peripheral edge of a fluid channel 2a formed on the body 2 so as to be demountably mountable, and a seat holder 5 arranged on the body 2 so as to be demountably mountable and configured to hold the seat 4 are provided. The body 2 and the seat holder 5 are each formed of a metal. Vickers hardness of the seat holder 5 is set to be smaller than Vickers hardness of the body 2.
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