Hydraulic distributor with pressure compensator for directional valves

Hydraulic distributor comprising:

• a main spool valve for actuating a hydraulic device, said main spool valve defining a delivery line and a discharge line;
• a feed line supplying a flow rate of an operating fluid at a working pressure to the delivery line for actuating the hydraulic device;
• a pressure compensator comparing a local pressure signal taken at the delivery line and a maximum load sensing pressure signal representing the working pressure of said hydraulic device,
• wherein said pressure compensator comprises five ports, two ports defining a flow path for the delivery line, two further ports defining a flow path for the discharge line and a fifth port connecting the flow path for the discharge line with an energy recovery line and wherein said pressure compensator intercepts said delivery line by the flow path for the delivery line and intercepts said discharge line by the flow path for the discharge line.

Hydraulic distributor comprising:

• a plurality of main spool valves each actuating a respective hydraulic device, each main spool valve defining a delivery line and a discharge line;
• a feed line supplying a flow rate of an operating fluid at a working pressure to the delivery line for actuating the hydraulic devices;
• a pressure compensator comprising four ports, two of the four ports defining a flow path for the delivery line and two of the four ports defining a flow path for the discharge line, wherein the pressure compensator compares a local pressure taken at the delivery line and a maximum load sensing pressure signal, said maximum load sensing pressure signal representing a maximum pressure value among respective working pressures of the hydraulic devices,
• an energy recovery line, wherein said pressure compensator intercepts simultaneously said delivery line and said discharge line.