Hydraulic power is an efficient method of delivering HP by pumping a fluid through a closed system. If the amount of flow or the pressure unknowingly decreases, the amount of HP delivered to a working unit will be reduced, and a system will not perform as it should. Testers. Portable hydraulic-circuit testers (Figure 2-20) are …
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A flow control valve is a device used for adjusting or manipulating the flow rate of a liquid or a gas in a pipeline. The valve contains a flow passage or a port whose flow area can be varied. The role of a flow control valve in a hydraulic circuit is very important and its …
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In the circuit in Fig. 3.15, the pump builds pressure in the accumulator until the setting of the unloading valve is reached. At this point, the unloading valve opens, and flow bypasses to the reservoir. The pressurized fluid is trapped in the accumulator by the check valve and the closed-center directional control valve. A functional …
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