Miniature bellows‐free low‐temperature valve

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Miniature bellows‐free low‐temperature valve

机译：微型无波纹管低温阀

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A novel design for a low‐temperature valve is presented. Designed to be used on fill‐line capillaries and flow lines in low‐temperature apparatus, the valve has nearly zero dead volume as well as a very small total volume. It employs no metallic bellows as in standard valve designs. Instead, a Kapton membrane is epoxied into a cylindrical form to provide a flexible diaphragm, which is activated by pressurized helium. The valve is simple to construct, having only one machining operation, and uses materials readily available. It has been tested in liquid helium to be leaktight above Tλ with a 1‐bar pressure differential across the capillary containing the valve.

机译：介绍了一种用于低温阀的新颖设计。该阀设计用于低温设备的加注管线毛细管和流量管线，死体积几乎为零，总体积非常小。它不像标准阀门设计那样使用金属波纹管。取而代之的是，将Kapton膜外延成圆柱形，以提供可弯曲的隔膜，该隔膜被加压的氦气激活。该阀结构简单，仅需进行一次机械加工，并使用容易获得的材料。已在液氦中对其进行了测试，以确保其在Tλ以上具有密封性，并且在包含阀的毛细管上存在1 bar的压差。

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《Review of Scientific Instruments》 |1985年第9期|P.1838-1840|共3页
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Miniature bellows‐free low‐temperature valve

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