| 摘要 |
PURPOSE:To correct a regulated pressure to a desired value, by making adjustable the energized force of a spring holding a diaphragm type movable member to a prescribed location normally against as input negative pressure. CONSTITUTION:In bodies 14, 15 having negative-pressure inlet and outlet 11, 12 and an air vent 13, a diaphragm 16 and a movable member 17 are provided, and the bodies are sectioned into a negative-pressure chamber linked to a negative- pressure outlet 12 and into an air chamber 19 linked to an air vent 13, and the negative pressure in the chamber 18 is displaced. The movable member 17 is energized to a normal position with an adjustable spring 21 by a screw 35, and a valve 31 controls the linking between the inlet 11 and the chamber 18 and between the chamber 13 and the chamber 18. A cam section 38a of a cam means 38 provided freely rotatably to the body is linked with a spring 24, and the regulated pressure can be corrected by making adjustable the energized force. |
