| 摘要 |
<p>A valve for an aerosol comprises a valve body 1 and a surrounding rubber sleeve 2 . The body defines an inlet and outlet passages 3, 4 and bores 5, 6 connecting these passages to the surface of the valve. When the pressure of fluid in the inlet passage 3 and bore 5 builds to a sufficient value the sleeve is pushed away from the body permitting flow through the bores between the passages. When the pressure falls the sleeve closes the bores to interrupt the flow.</p> |
