| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fluid supply stop valve capable of rapidly and securely closing a beer flow passage by the pressure of carbon dioxide when beer in a beer tank is absent. <P>SOLUTION: This fluid supply stop valve is installed in a fluid flow passage energized by a gas pressure, and comprises a primary flow passage and a secondary flow passage. A valve chamber is formed between the primary flow passage and the secondary flow passage, A ball valve element smaller in specific gravity than a liquid in the flow passage is installed in the valve chamber. In the valve chamber, a valve seat seated on which the ball valve element is seated by the upward movement is formed at the lower end opening of the secondary flow passage, and an inflow part to the valve chamber in the primary flow passage is formed at a position higher than the valve seat. Also, the stop valve comprises a reset means for pressing in the ball valve element toward the valve chamber when the ball valve element is seated on the valve seat. In addition, a vent valve is installed in the valve chamber at a position higher than the inflow part of the primary flow passage. In addition, a highly convenient fluid supply stop device can be provided by installing the stop valve and connecting so that two or more beer tanks can be switched. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
