发明授权
US4893643A Tank vapor vent valve assembly with improved overfill protection 失效
罐式蒸汽排气阀组件,具有改进的过充保护

Tank vapor vent valve assembly with improved overfill protection
摘要:
A TVVA with a buoyant overfill protection float contains the float closely and axially slidably within a sleeve, and feeds a negative pressure created by the rapid flow of fill vapors over the outside of the sleeve into the sleeve to hold the float down and prevent it from corking.
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