Metering valve
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United States of America Patent
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-
Aug 18, 1987
Issued Date -
N/A
app pub date -
Mar 10, 1986
filing date -
May 1, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A metering valve having a one-piece bonnet for reducing problems resulting from tolerance stack up. A guide portion is included on the nose of the bonnet for cooperation with a valve body bore to ensure concentric alignment between the metering pin and its associated orifice. A pair of O-rings on the valve stem cooperate with the bonnet bore to absorb forces and substantially reduce the potential for galling and breakage of the metering pin. One of the O-rings is compressed to a substantially greater extent than the other to aid in achieving better alignment between the stem and bonnet, and to obtain a firmer feel.
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