| 摘要 |
PURPOSE:To easily concentrate two kinds of fluid in favorable operability by fitting pipelines for introduction via a coaxial tubular joint to one end side of a tube doubled inside and outside, and attaching the same type joint for discharge to the other end of the tube. CONSTITUTION:In a device for connection of an air spray gun for coating or the like wherein liquid and gas are replenished respectively, a pipeline joint (B) for introducing gas and liquid is fitted to one end of a double-structure tube (A) wherein an inside tube 2 having outer diameter smaller than inner diameter of an outside tube 1 is inserted in the inside thereof, and both the tube 1 and the tube 2 are respectively fitted to the tubular joints 3a, 4a. A joint (C) for discharge is fitted to the other end of the tube (A), and the tube 1 and 2 are connected to joints 5b, 6b for discharge respectively. In such a way, since a connection hose to the air spray gun is integrated into a single tube, operation of an operator is lightened and the maintenance of the tube is simplified.
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