Expansion and shutoff valve
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United States of America Patent
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Mar 30, 2021
Grant Date -
May 17, 2018
app pub date -
Nov 7, 2017
filing date -
Nov 11, 2016
priority date (Note) -
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Abstract
An expansion and isolation valve, specifically an electric expansion and isolation valve for operation with the coolant R744, featuring a valve body arranged in a valve body chamber, a seal seat, and a seal, which are arranged along an axial movement direction of the valve body in the expansion valve. The expansion valve is further designed such that in a closed state of the expansion valve, there is a pressure bypass to the valve body chamber, and preferentially, that a valve body diameter at the positions of the seal seat and the seal corresponds with the respective seal diameters.
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