Pressure-reducing valve having a residual pressure function built into the reducing valve
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United States of America Patent
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Nov 21, 2017
Grant Date -
Jul 23, 2015
app pub date -
Jul 5, 2013
filing date -
Jul 9, 2012
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Abstract
The invention relates to a device for regulating the flow rate and/or pressure of a fluid, such as valve for a pressure gas cylinder, comprising a reducing valve including a first plug designed to be moved in the normal flow direction of the fluid during closure. The reducing valve also comprises a plunger to which the plug is coupled. The face of the plunger that is oriented towards the first plug defines a regulation chamber together with the body. The aforementioned face also comprises a seal that engages with a corresponding surface of the body such as to form a second plug for maintaining residual pressure. The regulation device also comprises a means for preloading and releasing a spring acting on the opposite face of the plunger.
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