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Komatsu Excavator Relief Valve – Pressure Reducing Valve

The Komatsu excavator relief valve is a hydraulic pressure-reducing valve designed to protect the hydraulic system from excessive pressure. Its standard operating pressure ranges from 250 to 280 bar and can be precisely adjusted via the control screw. The valve body is made of high-strength alloy steel with anti-corrosion coating and can withstand burst pressures up to 400 bar. The inlet and outlet ports have a diameter of 25 millimeters, allowing hydraulic oil flow up to 320 L/min. The internal design includes durable springs and high-pressure-resistant sealing components, extending the valves service life to over 10,000 operating hours.

This relief valve can be directly installed in the boom and bucket hydraulic circuits and performs reliably under heavy, continuous operation. Its precise operation prevents damage to pumps and hydraulic cylinders, ensuring system safety and durability. The valve weighs 3.2 kilograms and measures 180 millimeters in length, facilitating easy installation. Its robust design withstands vibration and shock, operating in temperatures from -20 to 80°C, with simple and quick maintenance. Stable performance under variable pressures maximizes efficiency and the overall hydraulic system lifespan.
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