Importance

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Abstract

A pressure regulator include a fluid introducing port; a primary regulating valve for reducing the primary pressure to a secondary pressure; a pressure regulating chamber receiving the fluid from the first pressure regulating valve; a diaphragm which is being displaced in response to the secondary pressure; a shift for drivingly connecting the diaphragm and the primary regulating valve; a pressure-setting section for adjusting a displacement magnitude of the diaphragm; and a discharging port through which the fluid of secondary pressure is discharged. The shaft includes a secondary regulating valve operatively associated with the primary regulating valve so as to further regulate the fluid from the primary regulating valve by opening-closing operations in reverse to those of the primary regulating valve. Hence, the pressure regulation characteristic of the secondary regulating valve against the fluctuations in the primary pressure become reverse to that of the primary regulating valve.

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First Claim