| 摘要 |
PURPOSE:To improve the operation reliability by installing a valve body which is opening/closing-operated by a pressure into a pressure chamber R having an opened port, thus permitting the valve opening/closing operation free from the contact of the valve body with liquid and suppressing the influence of the liquid level. CONSTITUTION:A valve body 22 which is opening/closing-operated by a pressure is installed into a pressure chamber R having an opened port. When, with such constitution, a gas-liquid separating chamber 8 is filled with liquid, and the liquid level in the gas-liquid separating chamber 8 rises, the pressure in a pressure chamber R increases, and the valve body 22 is closed. Therefore, the valve body 22 is not given with the influence of the vibration of liquid, and biting of foreign material is suppressed, and the operation reliability of the valve mechanism can be improved.
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