Products Description
|
Product name |
Main Control Valve |
| Application | Excavator Parts |
| Part number | 14509429 |
|
Excavator model |
EC210B EC360B EC360BLC |
|
Lead time |
1-3 days after payment |
|
Packing |
Wooden Case |
|
MOQ |
1 Piece |
|
Quality |
High quality |
|
Warranty |
3-6 months |
|
Shipping |
DHL, UPS, FedEx, Air, Sea, DDP |
|
Payment |
TT / Alibaba Trade Assurance / Credit card / Western Union / Alipay / Wechat |
Detailed Photos






Product Advantages
Core strengths
Choose the main control valve that suits you best.
Precise Fit for Volvo EC360B Series
Specifically engineered for Volvo EC360B and EC360BLC excavators. All mounting interfaces, port dimensions, and pilot oil circuits are identical to OEM specifications-enabling direct replacement with no modifications or adaptations required.
High-Quality Cast Valve Body, Rugged & Durable
Constructed from high-strength cast iron with precision-machined internal oil passages and spool bores. Paired with premium seals, it ensures long-term, stable operation under high pressure (350 bar+) and high-frequency vibration environments-no leakage, no sticking.

Optimized Oil Circuit Design, Low Pressure Loss & High Efficiency
Internally designed oil passages minimize hydraulic oil flow resistance while maintaining precise control. Reduces energy loss, improves machine fuel economy, and enhances system response speed.
Rigorous Factory Testing, Performance Guaranteed
Every main control valve undergoes comprehensive pressure testing, leakage inspection, and spool function testing before shipment. Ensures plug-and-play reliability and stable performance upon delivery.
Our Office
Guangzhou Chaotian Construction Machinery Equipment Co., Ltd.

20
years
With more than 20 years of active involvement since 2004, our work has been defined by ongoing evolution and dedication to this field.
5
departments
Our company framework consolidates specialized departments in sales, production, quality control, technical assistance, and after-sales care. This unified approach guarantees comprehensive, superior solutions tailored to each client's requirements.
100+
LANGUAGES
English, Spanish, Portuguese, French, Arabic, Thai, Korean...

Our Factory
Product Range
We are a Guangzhou-headquartered international supplier with more than 15 years in the heavy-duty machinery components sector. Our core focus is the supply of a wide selection of premium excavator and loader parts, complemented by chosen wheel excavators and complete drill rig packages.
Our in-house production capacity supports a broad inventory of both genuine and high quality spare parts, selling major international brands including Caterpillar, Komatsu, Kobelco, Volvo, BOSCH, Hyundai, and Hitachi parts.
High quality and Good Service
We offer worldwide shipping, enabling seamless international commerce with support for over 100 languages and continuous logistics operations. Our dependable 24/7 delivery makes us a valuable ally for businesses scaling their global market reach and extending their supply networks.

Our certificates and awards
Your reliable supplier !
We are committed to relentless innovation and enduring progress,
reinforced by a portfolio of esteemed industry accreditations and notable professional distinctions.






Available Shipping Methods
- Express delivery via DHL, UPS, FedEx, Aramex, EMS, and SF Express.
- Air freight to the destination airport.
- Sea freight to the port of arrival.
- DDP (Delivered Duty Paid) services by air or sea.
- To your designated freight forwarder in China for further handling.

FAQ
Q:My EC360B excavator has poor combined operation coordination and slow movements. Could this be caused by the main control valve?
A: Possibly, but not necessarily the only cause. Poor coordination/slow movements can result from multiple factors:
1) Internal wear in the main control valve (increased spool/bore clearance causing internal leakage);
2) Insufficient main pump flow or low pressure;
3) Low pilot pressure;
4) Faulty compensator valves. We recommend systematic diagnosis: measure main pump pressure and pilot pressure, and perform individual movement speed tests.
If severe internal leakage in the main control valve is confirmed, this product is the ideal direct replacement.
Q:Is this main control valve brand new? What components are included?
A:This is a brand new, original-remanufactured main control valve assembly. It includes the complete valve body, all spools, springs, main relief valve, overload relief valves, and all internal components. It does not include pilot valves, pilot lines, or hose fittings. You will need to use your existing (or new) hoses and seals during installation.
Q:What is the most important consideration during installation?
A:Hydraulic system cleanliness is absolutely critical!
1) The main control valve is extremely sensitive to oil contamination-thoroughly flush all hoses and replace hydraulic oil and filters before installation;
2) Use new O-rings and seals to ensure leak-free connections;
3) Use a torque wrench and tighten all fittings to specified torque;
4) After installation, bleed the system, then inspect all connections for leaks;
5) Professional hydraulic technician installation and adjustment is strongly recommended.
Q:How can I confirm this main control valve fits my EC360B excavator?
A:The most accurate method is to check the part number label on your original main control valve and verify it is 14509429. Alternatively, you can provide your excavator's serial number to us for final verification. Different production batches of the EC360B series may have configuration variations.
Contact Ways
+86 18011700949
gzsansan13@outlook.com

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