Service valve specification: The service valve on the R225-7 excavator is a hydraulic valve that is used to control the flow of hydraulic fluid to various components of the machine, such as the boom, arm, and bucket. The service valve specification may vary depending on the specific model and year of the excavator, but some general specifications are:
Maximum flow rate: 360 L/min
Maximum pressure: 35 MPa
Number of spools: 4
Negative relief valve specification: The negative relief valve is a safety valve that protects the hydraulic system from damage caused by excessive pressure. It is designed to open when the pressure in the system exceeds a certain level, allowing fluid to flow back to the reservoir. Some specifications for the negative relief valve on the R225-7 excavator may include:
Maximum pressure: 3.9 MPa
Opening pressure: 3.3 MPa
Flow rate: 40 L/min
