| 摘要 |
A fitting for mounting to the ends of smooth wall tubes, the fitting having an entry for the tube and a collet which grips on the outside diameter of the tube by means of a mechanical spring. The fitting also seals on the inside diameter of the tube. A passageway extends through the fitting such that the tube is in fluid communication with a supply source, the fluid being able to flow between the supply source and the tube. The fluid pressure activates a piston in the fitting which causes the collet to engage the tube more securely and also increases the seal within the inside diameter of the tube.
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