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90774640 65516840 90774240 65516740 Main Control Valve for Komatsu PC3000 6 PC4000 6 | Ultra-Class H

Control valve
May 09, 2026
Keyword: Excavator Main Control Valve
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Tags:
#Daewoo Main Control Valve Excavator #Hydraulic Doosan Excavator Parts #Multi Way Excavator Main Control Valve
Video Description:
Our team walks you through how the Komatsu PC3000-6 and PC4000-6 main control valve performs in demanding mining scenarios. In this video, you'll see a detailed demonstration of the hydraulic main control valve assembly, learn about its precision-ground spool sets for stable control response, and discover how its multi-stage pressure compensation maintains system stability under sudden load changes. We'll showcase the valve's high-dust sealing structure and explain how its extra-large flow passages provide sufficient hydraulic oil supply for super-sized mining excavator attachments.
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