The main relief valve for PC200 - 6 and PC300 - 6 is a critical safety device in the hydraulic system. Its primary function is to limit the maximum pressure in the main hydraulic circuit. When the pressure exceeds the preset relief pressure, the valve opens to allow the hydraulic fluid to flow back to the reservoir, thus preventing damage to the hydraulic components such as pumps, motors, and cylinders due to over - pressurization.（Applicable Machine Models）
Specifically designed for Komatsu PC200 - 6 and PC300 - 6 excavators, this relief valve is an integral part of their hydraulic systems, ensuring the reliable operation of various hydraulic functions including but not limited to digging, lifting, and swinging operations.
