To install, thread the N9-CD onto the hose thread outlet, the built-in non-removable locking feature prevents removal.
为了安装，要将N9-CD螺纹旋进软管螺纹出口，内置不可拆卸锁定装置防止拆卸。
Series 8 is a line of unique vacuum breakers specially made to permit the attachment of portable hoses to hose thread faucets.
系列8是一种独特的真空断路阀，专用于使移动式软管连接到软管螺纹上。
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