Tap for gas cylinder with adiabatic compression prevention system, with variable pressure drop
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United States of America Patent
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Issued Date -
Jun 8, 2006
app pub date -
Dec 3, 2004
filing date -
Dec 3, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A tap (10) for a gas cylinder has a non-sealing gate valve (44) positioned between an on/off valve (14) and a pressure reducer (18) of the tap. The gate valve (44) is normally in a position with a normal passage area. When the valve (14) is opened the gate valve (44) is rapidly moved by the pressurized gas towards a position with a limited passage area in order to reduce the shock wave applied to the pressure reducer (18). After the pressures on both sides of the gate valve (44) have been balanced, the gate valve returns to its position with a normal passage area.
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