| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pilot solenoid feed water valve capable of making clogging occur less frequently by forming an equalizer hole to have a relatively large diameter and dispensing with an increase in solenoid size.SOLUTION: A pin 32 that can be inserted into an equalizer hole 21 and that is smaller in diameter than the equalizer hole 21 is provided in a back pressure chamber 3. In a state in which the pin 32 is inserted into the equalizer hole 21, a gap having a smaller cross-sectional area than that of a pilot valve hole 22 is generated between a circumferential surface of the equalizer hole 21 and the pin 32. In a state in which a main valve 2 is present at a closing position at which the main valve 2 closes a main valve hole 13, the pin 32 is detached from the equalizer hole 21. The pin 32 is inserted into the equalizer hole 21 when the main valve 2 is displaced from the closing position in a direction of opening the back pressure chamber 3.</p> |
