Orifice assembly for gas metering device
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United States of America Patent
Stats
-
Sep 21, 1993
Grant Date -
N/A
app pub date -
Jul 13, 1992
filing date -
Jul 13, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An orifice assembly for use in sealed fluid connection between a gas inlet and gas outlet in a gas flow meter includes a rotor positioned for rotatable movement in fluid connection with both the gas inlet and gas outlet. The rotor includes a plurality of bores in a first circular plate and a matching number of gas passageways in a second circular plate, the passageways being aligned with the bores. The rotor also includes an annular groove separating the first and second circular plates and in fluid communication with the gas inlet for introducing gas into the gas passageways. A plug is adjustably positioned in each bore and axially movable toward the corresponding gas passageway to partially block gas flow from the inlet toward the outlet.
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