Dual valve fluid metering system

A flow metering system includes a pump configured to propel a fluid flow from a fluid source; and a recirculation line, the recirculation line being located at the pump. A pressure regulating valve is positioned along the recirculation line. One or more fluid delivery lines extend downstream of the pump to deliver the fluid flow to one or more fluid consumers. A flow control valve is positioned along each of the one or more fluid transfer lines. A system controller is operably connected to the pressure regulating valve and the one or more flow control valves. The system controller is configured to maintain a selected pressure differential and a selected flow rate of the fluid flow by operating the pressure regulating valve and the one or more flow control valves. 一种流量计量系统，包括：泵，所述泵被配置为从流体源推动流体流；以及再循环管线，所述再循环管线位于所述泵处。压力调节阀沿着所述再循环管线定位。一条或多条流体输送管线在所述泵的下游延伸以将所述流体流输送到一个或多个流体消费者。流量控制阀沿着所述一条或多条流体输送管线中的每条流体输送管线定位。系统控制器可操作地连接到所述压力调节阀和一个或多个流量控制阀。所述系统控制器被配置为通过操作所述压力调节阀和所述一个或多个流量控制阀来维持所述流体流的选定压差和选定流速。