| 摘要 |
A spray head structure of a spray gun includes a block ring which is extended at a top end of wall between an inner and outer slot ring of a fixing seat. A surface of block ring, facing to a cap, is formed with a top cone surface for being tightly connected with a top cone of the cap, such that proper gaps can be formed between a cover ring of top cone surface and an inner wall of screw nut, and between a flange ring in an interior of top cone of cap and an outer wall of nozzle, which will completely separate an inner duct with an outer duct without mutually interfering, and is also provided with a proper effect of stabilizing a gas pressure.
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