Where is the excess oil flow discharged in a hydraulic pressure reducing valve?

In a hydraulic pressure reducing valve, the excess oil flow is discharged back to the oil reservoir. This mechanism is vital for maintaining optimal pressure levels within the hydraulic system. When the system pressure exceeds the set limit of the pressure reducing valve, the valve opens to allow excess fluid to return to the reservoir. This process helps prevent overpressure conditions that could lead to equipment failure or damage.

Discharging excess oil to the reservoir ensures that the hydraulic circuit operates efficiently and effectively. It allows the system to stabilize at a desired pressure without causing unnecessary fluctuations. The maintenance of pressure is crucial for the proper functioning of hydraulic components, ensuring that they receive consistent pressure without the risk of surges.

Options that suggest directing the excess oil flow to the pump inlet, into the atmosphere, or to the hydraulic cylinder do not align with the operational principles of a pressure reducing valve, which specifically functions to regulate pressure and manage flow by returning surplus fluid back to the reservoir where it can be reused.