Meter-in circuit is a method by which a flow control valve is placed in a hydraulic circuit in such a manner that there is a restriction in the amount of fluid flowing to the actuator. The presence of the flow control valve enables restriction in the fluid flow to the cylinder and thereby slowing down its extension. It should be noted that the flow control in the given circuit is achieved in the forward direction only. The main advantage of the meter-in circuit is that the cylinder undertakes one side pressure with a valve corresponding to the real load. meter-in circuits are ideally applied on a surface grinder & milling machines.

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