OEM HD820R Main Relief Valve

The part number for the main relief valve of the HD820R excavator is 31M8-10150. The valve has a maximum operating pressure of 34.3 MPa (4970 psi) and a cracking pressure of 20.6 MPa (2990 psi). It has a flow capacity of 120 liters per minute (31.7 gallons per minute).

The main relief valve is an important component of the hydraulic system of the HD820R excavator. It regulates the pressure in the hydraulic system and protects it from damage due to excess pressure. The valve is designed to open when the pressure in the system exceeds a certain threshold, allowing fluid to flow out of the system and relieve the pressure.

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