Vickers DG4V 3 0B M FTWL B6

For die casting and press applications, 80 liters per minute is a solid working flow rate and fits right in the expected range for directional control valves running those kinds of cycles. The DG4V series was built with exactly those industries in mind, so you're not squeezing it to its limits by using it there. Just make sure your system demand doesn't regularly push against that ceiling, since running a valve near max flow continuously tends to accelerate wear on the seals over time.

For a lot of hydraulic setups, it is there to route flow where you need it, since it provides three or four way directional control. That makes it a common fit in equipment like presses, machine tools, and similar industrial systems where you need the valve to shift oil flow between functions.