14405382 14676421R 14676421 Main Control Valve for EC210 EC210B EC240B D6D Excavator 14532821 14512144

The 14405382 Main Control Valve is a heavy-duty hydraulic control valve assembly designed for compatible EC210, EC210B, EC240B and D6D excavators. Related replacement numbers include 14676421R, 14676421, 14532821 and 14512144.

As a central component of the excavator hydraulic system, the main control valve manages hydraulic oil flow to different working circuits, helping control boom, arm, bucket, swing, travel and other hydraulic functions.

Built with a durable valve body and precision-machined internal components, this excavator control valve is designed to provide stable hydraulic control, responsive operation and dependable performance in demanding construction and earthmoving applications.

Product Specifications

Key Features

• Stable Hydraulic Control – Designed to accurately distribute hydraulic oil to compatible excavator working circuits.
• Multi-Section Valve Design – Multiple control sections coordinate different hydraulic functions within one main valve assembly.
• Precision Manufacturing – Critical valve passages and mating surfaces are precisely manufactured for dependable operation.
• Durable Valve Body – Heavy-duty construction provides resistance to pressure, vibration and demanding operating conditions.
• Responsive Operation – Helps maintain smooth and precise hydraulic response during digging, lifting, swinging and traveling.
• Reliable Sealing Performance – Designed to minimize internal and external hydraulic leakage when correctly installed.
• Direct Replacement Solution – Suitable for replacing compatible worn or damaged main control valve assemblies.
• Quality Inspected – Product condition and key interfaces can be checked before shipment.

Compatible Excavator Models

This main hydraulic control valve is suitable for compatible applications including:

EC210
EC210B
EC240B
D6D

Because excavators may use different valve configurations depending on serial number, production year and hydraulic system specification, please do not confirm fitment by machine model alone.

Reference Part Numbers

This product may correspond with the following reference numbers:

14405382
14676421R
14676421
14532821
14512144

For the most accurate replacement, please compare the original valve nameplate, part number, valve ports and overall configuration before ordering.

Main Control Valve Function

The excavator main control valve acts as the hydraulic distribution center of the machine. Pressurized hydraulic oil from the main pump enters the valve assembly and is directed to the appropriate actuators according to operator commands.

Depending on the machine configuration, the valve controls hydraulic functions such as:

Boom Up/Down · Arm In/Out · Bucket Curl/Dump · Swing · Left/Right Travel · Auxiliary Hydraulic Functions

A properly functioning main control valve is essential for smooth, coordinated and efficient excavator operation.

Common Symptoms of a Faulty Control Valve

A worn or damaged main control valve may contribute to problems such as:

• Slow hydraulic response
• Weak digging performance
• Unstable boom or arm movement
• Hydraulic drift
• Uneven travel operation
• Excessive internal leakage
• Abnormal hydraulic pressure
• Poor coordination between hydraulic functions

Correct diagnosis of the complete hydraulic system is recommended before replacing the valve, as similar symptoms can also be caused by the hydraulic pump, cylinders, sensors or other hydraulic components.

Product Advantages

Precision Hydraulic Control

Precisely manufactured valve sections help provide consistent oil-flow distribution and responsive hydraulic operation.

Heavy-Duty Construction

The robust metal valve body is designed for the high-pressure and vibration conditions commonly encountered in excavator applications.

Complete Valve Assembly

Supplying the valve as a complete assembly can simplify replacement compared with rebuilding multiple worn internal sections individually.

Reliable Replacement

Designed for professional machinery repair, overhaul and maintenance applications where a compatible replacement main control valve is required.

Applications

Suitable for:

Excavators · Construction Machinery · Earthmoving Equipment · Mining Machinery · Hydraulic Equipment · Excavator Repair & Rebuilding

Ideal for equipment owners, machinery repair workshops, construction companies and excavator spare-parts distributors.

Fitment Confirmation

For main control valves, accurate fitment verification is especially important. Before ordering, please provide:

1. Original Part Number
2. Excavator Model
3. Machine Serial Number
4. Clear Photo of the Original Valve Nameplate
5. Front, Rear and Side Photos of the Original Valve
6. Hydraulic Port Configuration
7. Required Quantity

JISION can help compare the part number, valve body configuration, hydraulic ports and mounting structure before shipment.

Why Choose JISION?

JISION supplies hydraulic, electrical and engine replacement parts for excavators and other construction machinery.

Our hydraulic parts range includes:

Main Control Valves · Hydraulic Pumps · Piston Pumps · Gear Pumps · Swing Motors · Travel Motors · Pilot Valves · Solenoid Valves · Hydraulic Cylinders · Seal Kits

We support single-unit orders, wholesale purchasing and bulk supply for international customers.

Packaging & Shipping

The main control valve is securely protected before shipment. Hydraulic ports are protected to help prevent contamination and damage during storage and transportation.

Heavy-duty export packaging can be provided according to product weight, order quantity and shipping method.

Inquiry Information

For a fast quotation and fitment check, please send:

Part Number: 14405382 / 14676421R / 14676421 / 14532821 / 14512144
Machine Model: EC210 / EC210B / EC240B / D6D
Machine Serial Number: If available
Quantity: Required quantity
Destination: Country / Port

Send JISION your original control valve nameplate and valve photos, and we can help verify the correct configuration before ordering.

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