Valve main unit and method of manufacturing the same
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United States of America Patent
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Jan 23, 2018
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app pub date -
Nov 14, 2014
filing date -
Nov 21, 2013
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Abstract
A valve main unit, in which a high pressure valve is to be provided, includes a channel for hydrogen gas. An internal surface of the channel is constituted by an oxidation layer formed by performing anodizing on an aluminum-based alloy. The oxidation layer of the channel is formed by performing the anodizing under a condition in which the oxidation layer with a thickness of 8 μm or less is formed at an external surface of the valve main unit, the external surface having an opening communicating with the channel.
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