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Graetz Flow Control Circuit

This example shows the Graetz circuit, which consists of four check valves and a flow control valve. It is used to control flow rate flowing in both directions with only one flow control valve. The check valves are arranged in such a way that flow always passes the flow control valve in the same direction. Two other check valves, CHV_1 and CHV_2, are used to select an orifice depending on the flow direction.

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