Control valve with pairs of petals with different shape and sizes and with different closing speed for separable connection units for flexible hoses
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United States of America Patent
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May 17, 2016
Grant Date -
Mar 26, 2015
app pub date -
Apr 24, 2013
filing date -
Apr 26, 2012
priority date (Note) -
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Abstract
A control valve for connection units for flexible hoses comprises a plurality of petals rotatable between a position of complete opening and a position of complete closing. The petals consist of pairs of petals with different shape and sizes, alternately arranged along the circumference of the connection unit. The petals of smaller size are controlled to close more slowly than those of larger size. The upstream surface of the petals of smaller size is provided with a pair of fins laterally protruding from the upstream surface so as to rest on the upstream surface of the petals of larger size to oblige the latter to close before the petals of smaller size.
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