Main Control Valve for Excavator

Summary of Product

The main control valve is a core hydraulic component having a large influence on the performance, work efficiency and fuel efficiency of an excavator and is composed of very complicated internal hydraulic circuits for functioning to accurately control the operation of a hydraulic drive device, such as a pump, a motor, a cylinder and the like. Furthermore, the main control valve is core hydraulic equipment required to have high size accuracy and rigidity against high pressure because a high pressure of 350 bar or more is operated.

Technical Features

ㆍMCV Casting Design & Quality Management by 3D Casting Analysis
ㆍUsing only Material Carefully Selected for High Quality Base Iron
ㆍPressure Resisting Quality Resulting from Fine Casting Structure (350 bar or more)
ㆍImplementation of Stable Substantive Strength & Durability by CGI Structure Control Technology
ㆍExcellent Processability, Improvement of Tool Lifespan, and Reduction of Processing Time
ㆍSize Accuracy
ㆍCleanliness of Inner Flow Passage (Kolene Treatment of All Products)

Material Spec

Material	Mechanical Properties
Material	T.S(MPa)	Y.S(MPa)	E.L(%)	Hardness(HB)
CGI 350	350 or more	230 or more	3 or more	160 ~ 216
CGI 420	420 or more	270 or more	2 or more	170 ~ 230
CGI 450	450 or more	290 or more	2 or more	180 ~ 240
FCD 500	500 or more	310 or more	2 or more	160 ~ 230