| 摘要 |
PURPOSE:To reduce clogging due to foreign matters to ensure the operation by the constitution where there is no interstice between a high-pressure chamber and a low-pressure chamber. CONSTITUTION:A fluid flowed from an entrance 26 enters into one of pessure chambers, namely, a high-pressure chamber 23b through a passage 27 and acts upon a bellows-diaphragm 36 to press the bellow-diaphragm 36 and a valve body 33 to the left. Meanwhile, the fluid is flowed into the other of pressure chambers, namely, a low-pressure chamber 23a through the passage 27 and a rotary valve body 40 and is flowed out to the outside from an exit through a through hole 31 of an exit pipe 30. The bellows-diaphragm 36 and the valve body 33 are stopped in positions where the pressure of the high-pressure chamber, the pressure of the low-pressure chamber, and the force of a spring 34 are balanced, and a flow rate flowed out to the exit from the low-pressure chamber 23a is set. |
