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Shop PC220-8 Main Relief Valve | OEM aftermarket new

Shop PC220-8 Main Relief Valve | OEM aftermarket new

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Product Detail

Pressure Regulation: The main function of the PC220-8 Main Relief Valve is to regulate the hydraulic system pressure.

It maintains the pressure within a predetermined range, preventing it from exceeding the system's maximum operating pressure. This feature protects the hydraulic components from damage due to excessive pressure. Safety Mechanism: The valve incorporates a safety mechanism to safeguard the hydraulic system and machine. In the event of a sudden pressure surge or overload, the relief valve opens, allowing excess pressure to escape and preventing damage to the system. This safety feature protects both the equipment and the operators. Precise Control: The PC220-8 Main Relief Valve offers precise pressure control, ensuring smooth and accurate operation of the hydraulic system. It maintains consistent pressure levels, allowing for precise movements of the excavator's various hydraulic functions, such as boom, arm, and bucket. Working Principle: The PC220-8 Main Relief Valve is a pilot-operated relief valve, meaning it utilizes a small pilot valve to control the opening and closing of the main valve. Here's a simplified overview of its working principle: Normal Operation: During normal operation, the pilot valve remains closed, keeping the main valve shut. This allows the hydraulic system pressure to build up to the desired working pressure. Pressure Exceeding Setpoint: If the system pressure exceeds the predetermined setpoint, the pilot valve senses this increase and opens slightly. This allows a small amount of hydraulic fluid to flow from the system to the pilot valve chamber. Opening the Main Valve: As hydraulic fluid flows into the pilot valve chamber, it creates a force that counteracts the force exerted by the system pressure on the main valve. When the forces balance, the main valve opens partially, allowing excess fluid to escape and reducing the system pressure. Pressure Stabilization: As the excess fluid escapes, the system pressure begins to stabilize. The pilot valve adjusts its position accordingly, keeping the main valve partially open to maintain the desired pressure within the system. Specifications: Pressure Rating: The PC220-8 Main Relief Valve typically has a pressure rating of around 300 to 350 bar (4350 to 5075 psi). This rating ensures compatibility with the hydraulic system's maximum operating pressure.

Flow Capacity: The valve's flow capacity refers to the maximum volume of hydraulic fluid it can handle.

The PC220-8 Main Relief Valve is designed to accommodate the flow requirements of the PC220-8 excavator's hydraulic system. Materials and Durability: The valve is constructed using high-quality materials to ensure durability and resistance to wear and corrosion. These materials are selected to withstand the demanding operating conditions encountered by the excavator in various construction environments. Compatibility: The PC220-8 Main Relief Valve is specifically designed for the PC220-8 model of Komatsu excavators. It is engineered to fit seamlessly into the hydraulic system of the machine, ensuring optimal performance and compatibility.

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Product Detail

Pressure Regulation: The main function of the PC220-8 Main Relief Valve is to regulate the hydraulic system pressure.

Flow Capacity: The valve's flow capacity refers to the maximum volume of hydraulic fluid it can handle.

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