Electro-Proportional Valve

https://www.inno-valve.com/products/electro-proportional-valve/

An electro-proportional valve, also known as an electronically controlled hydraulic proportional valve or simply an EPV, is a type of hydraulic cartridge that uses electrical signals to control fluid flow rate or pressure. It operates based on the principle of proportional control, where the valve's position is adjusted proportionally to the input signal received.