Three-valves manifold for differential pressure type flow meter
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United States of America Patent
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Jan 22, 2013
Grant Date -
Jan 27, 2011
app pub date -
Jul 23, 2009
filing date -
Jul 23, 2009
priority date (Note) -
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Abstract
A three-valves manifold for a differential pressure type flow meter includes a valve unit and a housing. The valve unit includes a shaft portion, a first valve portion having a first through hole and first to third grooves and a second valve portion having a second through hole and fourth and fifth grooves. The housing includes a space in which the shaft portion and valve portions are rotatably arranged. The first and second through holes and first to fifth grooves are formed at positions such that the first and second through holes communicate differently with first and second inlet and outlet openings of the housing in each of first, second, and third rotational positions.
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