1.0 美国 O’Keefe Controls 阀门、连接器、阻流器https://www.bihec.com/okeefe何小姐19375106483（微信同号）https://www.bihec.com/okeefe/author/u2023/美国O’Keefe Controls FFRO-2-00B0-N-CB-BN固定流量孔口 固定流速水孔 NPT连接 - 美国 O’Keefe Controls 阀门、连接器、阻流器rich600338<blockquote class="wp-embedded-content" data-secret="xd8ohW34Jx"><a href="https://www.bihec.com/okeefe/%e5%9b%ba%e5%ae%9a%e6%b5%81%e9%87%8f%e5%ad%94%e5%8f%a3-2/">美国O’Keefe Controls FFRO-2-00B0-N-CB-BN固定流量孔口 固定流速水孔 NPT连接</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.bihec.com/okeefe/%e5%9b%ba%e5%ae%9a%e6%b5%81%e9%87%8f%e5%ad%94%e5%8f%a3-2/embed/#?secret=xd8ohW34Jx" width="600" height="338" title="《美国O’Keefe Controls FFRO-2-00B0-N-CB-BN固定流量孔口 固定流速水孔 NPT连接》— 美国 O’Keefe Controls 阀门、连接器、阻流器" data-secret="xd8ohW34Jx" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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https://www.bihec.com/okeefe/wp-content/uploads/sites/1490/2025/03/img_67d2dd955644c-e1741872668383.png600450固定流速孔口包含一个可变形的开口，该开口的尺寸会随着压差的增加而减小。该装置的设计通过减小孔口面积来补偿压差增加，从而在 15-150 psig 的压差范围内产生恒定流量。 材料