Hydraulic valves have different functions: pressure control valves are responsible for maintaining the correct pressure in the hydraulic system. Safety valves protect the system from excessive pressure. Valves with flow stop function: check valves, pilot-operated check valves, logic and drain valves. The purpose of valves should be matched to the type of system and the necessary functions. Flow control valves are designed regulate the flow rate and they can do it in various ways: throttle check valve, throttle or dividing the flow or regulating it.