Reservoirs that are vented use which method to help push oil into the pump?

Reservoirs that are vented utilize atmospheric pressure to assist in pushing oil into the pump. When a reservoir is vented, it allows air to enter the space above the liquid. This entry of air helps to maintain a pressure balance. As oil is drawn out of the reservoir by the pump, the volume of liquid decreases and the air pressure exerted on the surface of the oil helps to push the oil downward and into the pump.

This method is particularly effective in ensuring that the flow of oil remains consistent, preventing vacuum formation which could hinder the pump's operation and lead to cavitation or reduced efficiency. The reliance on atmospheric pressure is crucial in systems where maintaining the reservoir's integrity and ensuring a continuous supply of oil to the pump is necessary for optimal performance.