| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure governing device which is useful for general purposes and can obtain performance characteristics suitable for a flow rate region that is actually used.SOLUTION: The pressure governing device comprises: a valve stem 11 having a primary side path 2 and a secondary side path 3 communicating with each other via a valve aperture 4, including a diaphragm mechanism 5 for forming a diaphragm chamber communicating with a secondary side path 3, and provided continuous to the diaphragm mechanism 5, the valve stem 11 provided with a valve disc 12 provided continuously thereto, the valve disc 12 controlling the opening of the valve aperture 4; and a primary side balance chamber 14 communicating with the primary side path 2 and a secondary side balance chamber 15 communicating with the secondary side path 3, with a balance diaphragm 13 adjacent to the primary side balance chamber 14 provided continuously to the valve stem 11. In a communication path 16 by which the secondary side path 3 and the secondary side balance chamber 15 communicate, is provided a valve 17 for adjusting a flow rate amount, and the secondary balance chamber 15 and the diaphragm chamber 6 are made to communicate by a reducing hole 18. |
