| 摘要 |
PURPOSE: To provide a simple control valve capable of performing a precise regulation of different pressure levels of a gaseous pressure for use in dispensing product within a dispensing container and an excessive gaseous pressure from each other. CONSTITUTION: There are provided two interrupted flow channels 7, 8 partitioned by a base 9. Two lateral orifices 10, 11 communicating with each of these flow passages are installed at each side of the bottom section. There is provide a valve stem 6 which can be moved within a valve body 3. There are provided a first spring 13 for pushing the valve stem against the valve in a direction corresponding to an outward motion of the valve stem, and a second spring 20 arranged to prevent the outward motion of the valve stem so far as a pressure within a container does not exceed a predetermined value. The aforesaid two springs are arranged side-by-side. The first ends of the aforesaid two springs are pushed against a stopper means 14 stopped by a stop 15 only at one side of the valve stem. The stopper means can be slid against the valve stem in the case that the aforesaid valve stem is moved outward. The second end of the aforesaid first spring is pushed against a stop 17 which is integral with the valve, although the second end of the second spring is pushed against a stop 21 which is integral with the aforesaid valve stem. |
