| 摘要 |
<p>In accordance with certain embodiments, a system includes' a spray device (12) having a liquid pathway leading to a liquid exit (416), an air pathway leading to an air exit (414, 418, 420, 422) directed toward a spray region downstream of the liquid exit (416), and an assembly (400) disposed in the liquid pathway adjacent the liquid exit (416). The assembly (400) includes a threadless pintle (502) generally fit into a sleeve (500) in a concentric manner without threads. The assembly (400) also includes a generally annular passage (520) between the threadless pintle (502) and the sleeve (500) and a passage coupled with the generally annular passage (520). The generally annular passage (520) also has a cross-sectional area that alternatingly increases (584) and decreases (586) in a lengthwise direction along the liquid pathway.</p> |
