Using constant pressure variables plunger pump, output pressure can keep constant and flow varies as per system's demand.
采用恒压变量柱塞泵，输出压力保持恒定，输出流量根据系统需要而变化。
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The Fairchild model 2800 Plunger Operated Regulator is designed for applications requiring more rapid set point adjustment over the pressure range of the unit than conventional control knob models.