VALVE DEVICE, STORAGE SYSTEM FOR LIQUEFIED GAS FUEL, VEHICLE, AND STORAGE METHOD FOR LIQUEFIED GAS FUEL
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United States of America Patent
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Issued Date -
Mar 19, 2015
app pub date -
May 15, 2013
filing date -
May 17, 2012
priority date (Note) -
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Abstract
A first vapor phase valve including a housing, a flow passage in the housing, a main valve to block or open the flow passage, and an excess flow valve to block the flow passage when vapor phase dimethyl ether flows through the flow passage. The first vapor phase valve includes: a pressure chamber communicating with a pressure opening portion of the housing and a fixed shaft connected to the excess flow valve to maintain the excess flow valve in an open state by using pressure of liquid phase dimethyl ether flowing into the pressure chamber from the pressure opening portion. The excess flow valve, in order to prevent fluid from flowing out at a specified flow rate or more, can be forcedly opened.
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