| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure governing device capable of obtaining performance characteristics suitable for working conditions under which it is actually used.SOLUTION: The pressure governing device comprises: a device body 1 having a primary side path 2 and a secondary side path 3 communicating with each other via a valve aperture 4, and including a diaphragm mechanism 5 for forming a diaphragm chamber 6 communicating with a secondary side path 3; a valve stem 11 provided continuously to the diaphragm mechanism 5 and slidably held to the device body 11; and a valve disc 12 provided continuously to the valve stem 11 and controlling the opening of the valve aperture 4, the valve disc 12 being configured to control the opening of the valve aperture 4 along with pressure fluctuations in the diaphragm chamber 6. The pressure governing device is provided with a resistance value change mechanism 14 for changing the circulation resistance value of a fluid circulating between the valve aperture 4 and the valve disc 12 while the valve aperture 4 is open. |
