Oil reducing valve belongs to the pilot valve piston valve.

进口油用减压阀属于先导活塞式减压阀。

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The working process of the pneumatic valve was descried and the force on the valve piston was analyzed. A design method about pneumatic valve is provided.

通过对气动阀工作过程的描述及对其阀芯的受力分析，提出了气动排污阀设计方法。

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The utility model introduces a mechanism for guiding a valve piston returning to central positions, belonging to the technical field of a servomotor with follow-up action.

本实用新型介绍一种引导阀活塞复中机构，属于具有随动作用的伺服马达技术领域。

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All it means is that the Piston is not the Steam Box that Valve plans to release.

FORBES: Xi3 Is Committed to Piston, While Valve's Steam Box Remains Elusive

Codenamed "Piston", the prototype, developed by Xi3 Corporation and funded by Valve, was unveiled at the CES trade show in Las Vegas.

BBC: Steam 'game console' hardware debuted at CES