A vented relief valve is used to unload the pump flow through the relief valve at very minimum pressure setting to avoid over heating your hydraulic system.
This is the best way to learn how you can interchange any hydraulic pump you have for a better alternative.
Often people need to interchange their hydraulic pumps from existing system to a different pump that can offer better delivery time, pricing, or simply because their old pump hard to find or obsolete.
Hydraulic horsepower formula / equation to calculate the max HP required for your hydraulic system.
These are different examples of system applications for hydraulic check valves. Check valves are a very important component for proper work of hydraulic equipment as shown in these examples.