A valve unit (VU) comprising: - a first working port and a second working port , which are configured for connection to a first hydraulic distributor (D1); - a third working port and a fourth working port , which are configured for connection to a second hydraulic distributor (D2); - a fifth working port and a sixth working port , which are configured for connection to a respective fluid chamber of a first hydraulic actuator (A1) that can be driven by means of the first hydraulic distributor (D1); and - a seventh working port and an eighth working port , which are configured for connection to a respective chamber of a second hydraulic actuator (A2) that can be driven by means of the second hydraulic distributor (D2); wherein: - a first power line (PL1) connects said first working port to said fifth working port ; - a second power line (PL2) connects said second working port to said sixth working port ; - a third power line (PL3) connects said third working port to said seventh working port ; and - a fourth power line (PL4) connects said fourth working port to said eighth working port , characterised in that the valve unit (VU) moreover includes: - a first flow regulating valve (RQ1) including an inlet port, which is connected to said first power line (PL1) at a first circuit node (J1) and is in fluid communication with said fifth working port , and a first outlet port (RQ1A), connected to said fourth power line (PL4) at a second circuit node (J2); and - a second flow regulating valve (RQ2) including an inlet port, which is connected to said second power line (PL2) at a third circuit node (J3) and is in fluid communication with said sixth working port , and a first outlet port (RQ2A), connected to said third power line (PL3) at a fourth circuit node (J4). - a first working port and a second working port , which are configured for connection to a first hydraulic distributor (D1); - a third working port and a fourth working port , which are configured for connection to a second hydraulic distributor (D2); - a fifth working port and a sixth working port , which are configured for connection to a respective fluid chamber of a first hydraulic actuator (A1) that can be driven by means of the first hydraulic distributor (D1); and - a seventh working port and an eighth working port , which are configured for connection to a respective chamber of a second hydraulic actuator (A2) that can be driven by means of the second hydraulic distributor (D2); - a first power line (PL1) connects said first working port to said fifth working port ; - a second power line (PL2) connects said second working port to said sixth working port ; - a third power line (PL3) connects said third working port to said seventh working port ; and - a fourth power line (PL4) connects said fourth working port to said eighth working port , - a first flow regulating valve (RQ1) including an inlet port, which is connected to said first power line (PL1) at a first circuit node (J1) and is in fluid communication with said fifth working port , and a first outlet port (RQ1A), connected to said fourth power line (PL4) at a second circuit node (J2); and - a second flow regulating valve (RQ2) including an inlet port, which is connected to said second power line (PL2) at a third circuit node (J3) and is in fluid communication with said sixth working port , and a first outlet port (RQ2A), connected to said third power line (PL3) at a fourth circuit node (J4). <EOS>