EX200-6 Hydraulic Control Valve Assy for Hitachi Excavator Spare Parts 4178811 4224900 4210509 4398652 4478056 439-865 Main Control Valve OEM
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Product Description
EX200-6 Hydraulic Control Valve Assy for Hitachi Excavator Spare Parts 4178811 4224900 4210509 4398652 4478056 439-865 Main Control Valve OEM
EX200-6 Hydraulic Control Valve Assy for Hitachi Excavator Spare Parts 4178811 4224900 4210509 4398652 4478056 439-865 Main Control Valve OEM
Product Overview
The control valve (also known as the main control valve or multi-valve block) is the central hydraulic control component in excavators. It consists of multiple parallel spools that precisely distribute high-pressure oil from the pump to actuators (e.g., hydraulic cylinders, motors) based on operational demands, enabling coordinated machine movements.
Specifications
|
|---|
Working Principle
- Flow Distribution: Operator joystick or electronic signals shift valve spools, adjusting port openings to control oil flow rate and direction to each actuator.
- Pressure Regulation: Integrated pressure compensators and overload relief valves maintain stable flow under varying loads while preventing pressure spikes.
- Multi-circuit Coordination: Parallel spool design allows simultaneous operation of multiple actuators (e.g., boom lifting + arm retraction), with the system automatically splitting pump flow.
Product Images
| # | Part No. | Description | Qty |
|---|---|---|---|
| 4178811 | VALVE; CONTROL | 1 | |
| 1 | ---- | . HOUSING | 1 |
| 2 | ---- | . HOUSING | 1 |
| 3 | 0309701 | . CAP | 1 |
| 4 | 0309702 | . CAP | 1 |
| 5 | 0309703 | . CAP | 1 |
| 6 | 0309704 | . CAP | 1 |
| 7 | A810040 | . O-RING | 18 |
| 8 | 0306003 | . SEAT; SPRING | 18 |
| 9 | 0306005 | . END | 9 |
| 10 | 0309705 | . SPRING | 9 |
| 11 | ---- | . SPOOL | 1 |
| 12 | ---- | . SPOOL | 1 |
| 13 | ---- | . SPOOL | 1 |
| 14 | ---- | . SPOOL | 1 |
| 15 | ---- | . SPOOL | 1 |
| 16 | ---- | . SPOOL | 1 |
| 17 | ---- | . SPOOL | 1 |
| 18 | ---- | . SPOOL | 1 |
| 19 | ---- | . SPOOL | 1 |
| 20 | 0224408 | . BOLT; SOCKET | 24 |
| 21 | 0309602 | . BOLT; SOCKET | 8 |
| 22 | 0309603 | . WASHER | 8 |
| 23 | 0224411 | . PLUG | 6 |
| 24 | 0111715 | . O-RING | 9 |
| 25 | 0111711 | . POPPET | 5 |
| 26 | 0224410 | . SPRING | 3 |
| 28 | 4228353 | . VALVE; RELIEF | 6 |
| 28A | 4257232 | .. O-RING | 1 |
| 30 | 0309707 | . VALVE | 1 |
| 30A~G | 4251808 | .. SEAL ASS'Y | 1 |
| 30A | ---- | ... O-RING | 1 |
| 30B | ---- | ... O-RING | 1 |
| 30C | ---- | ... RING; BACK-UP | 1 |
| 30D | ---- | ... O-RING | 1 |
| 30E | ---- | ... RING; BACK-UP | 1 |
| 30F | ---- | ... O-RING | 1 |
| 30G | ---- | ... RING; BACK-UP | 1 |
| 31 | 0309708 | . VALVE | 1 |
| 31A~G | 4251808 | .. SEAL ASS'Y | 1 |
| 31A | ---- | ... O-RING | 1 |
| 31B | ---- | ... O-RING | 1 |
| 31C | ---- | ... RING; BACK-UP | 1 |
| 31D | ---- | ... O-RING | 1 |
| 31E | ---- | ... RING; BACK-UP | 1 |
| 31F | ---- | ... O-RING | 1 |
| 31G | ---- | ... RING; BACK-UP | 1 |
| 32 | 0309709 | . VALVE; RELIEF | 2 |
| 32A | 0111715 | .. O-RING | 1 |
| 33 | 0309710 | . PLUG | 2 |
| 33A~C | 4257233 | .. KIT; SEAL | 1 |
| 33A | ---- | ... O-RING | 1 |
| 33B | ---- | ... RING; BACK-UP | 1 |
| 33C | ---- | ... O-RING | 1 |
| 34 | 0309711 | . PLUG | 2 |
| 34A~C | 4257234 | .. KIT; SEAL | 1 |
| 34A | ---- | ... O-RING | 1 |
| 34B | ---- | ... RING; BACK-UP | 1 |
| 34C | ---- | ... O-RING | 1 |
| 35 | 0309712 | . PLUG | 1 |
| 35A~B | 4257235 | .. KIT; SEAL | 1 |
| 35A | ---- | ... O-RING | 1 |
| 35B | ---- | ... O-RING | 1 |
| 36 | 4226442 | . O-RING | 4 |
| 38 | 0309713 | . PLUG | 1 |
| 39 | 0309714 | . POPPET | 1 |
| 40 | 0309715 | . SPRING | 1 |
| 41 | 0309716 | . PLUG | 1 |
| 42 | 0309717 | . PLUG | 2 |
| 43 | 0125107 | . POPPET | 1 |
| 44 | 0125108 | . SPRING | 2 |
| 45 | 0309718 | . POPPET | 1 |
| 46 | 0309719 | . SPRING | 1 |
| 49 | 0309721 | . SLEEVE | 1 |
| 50 | 0309722 | . PLATE | 6 |
| 51 | 0224423 | . BOLT | 12 |
| 52 | A590910 | . WASHER; SPRING | 12 |
| 53 | 0309723 | . PLUG | 3 |
| 54 | 999867 | . O-RING | 3 |
| 55 | 0309724 | . RING; BACK-UP | 3 |
| 56 | 0309604 | . POPPET | 1 |
| 57 | 0309605 | . SPRING | 1 |
| 58 | 4226443 | . O-RING | 1 |
| 59 | 0309608 | . POPPET | 2 |
| 60 | 0309606 | . SPRING | 2 |
| 61 | 4506424 | . O-RING | 1 |
| 63 | 4226444 | . O-RING | 1 |
| 65 | 94-2010 | . PLUG | 3 |
| 66 | 4226445 | . O-RING | 4 |
| 67 | ---- | . NAME-PLATE | 1 |
| 68 | ---- | . SCREW; DRIVE | 4 |
| 71 | 0309601 | . PLUG | 1 |
| 72 | 0309607 | . SEAT | 1 |
| 73 | 4226446 | . O-RING | 6 |
| 74 | 0309728 | . SPRING | 2 |
| 75 | 0218607 | . PLUG | 1 |
| 76 | 0309729 | . POPPET | 1 |
| 77 | 0224413 | . SPRING | 1 |
| 78 | 0309730 | . VALVE; CHECK | 1 |
| 78A | 0111715 | .. O-RING | 1 |
| 79 | 4228354 | . VALVE; RELIEF | 2 |
| 79A | 4257232 | .. O-RING | 1 |
| 80 | 0309731 | . PLUG | 2 |
| 81 | 0309732 | . PLUG | 1 |
| 82 | 4216872 | . VALVE; RELIEF | 1 |
| 82A | 4257232 | .. O-RING | 1 |
| 83 | 4216873 | . VALVE; RELIEF | 1 |
| 83A | 4257232 | .. O-RING | 1 |
| 84 | 4235391 | . POPPET | 1 |
| 85 | 4235392 | . SPRING | 1 |
| 88 | 0309733 | . PLATE | 3 |
| 89 | 0224422 | . O-RING | 3 |
| 90 | ---- | . VALVE; CHECK | 1 |
| 90 | 4239608 | . VALVE; CHECK | 1 |
| 90 | 4250560 | . VALVE; CHECK | 1 |
| 90A | 0111715 | .. O-RING | 1 |
| 90B | 0125107 | .. POPPET | 1 |
| 90C | 0309720 | .. SLEEVE | 1 |
| 90C | 4237926 | .. SLEEVE | 1 |
| 90C | 4237926 | .. SLEEVE | |
| 90C | 4250558 | .. SLEEVE | 1 |
| 90D | 0309725 | .. POPPET | 1 |
| 90D | 4237925 | .. POPPET | 1 |
| 90D | 4237925 | .. POPPET | |
| 90D | 4250559 | .. POPPET | 1 |
| 90E | 0309726 | .. SPRING | 1 |
| 90E | 4237927 | .. SPRING | 1 |
Our Advantages
- Strong Part Number Database: If you can provide the right model and part number, we can supply the right product.
- Professional and Experienced Salesperson: Our founder has been in this field for more than 7 years, with rich experiences.
- Strict and Complete Company Rules: We will try our best to meet customer's delivery time. Before delivery, we must verify the part number or pictures of products one by one, to ensure customers receive high-quality and right-quantity goods.
- Good Management System: No matter how big or small the order, as long as customers place the order, we will provide exporting service free of charge.
- Good Service Attitude: If the customer has any questions about the product, we will help solve the problem immediately. As long as customers' requirements are reasonable, we will endeavor to make them satisfied.
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
GZ Yuexiang Engineering Machinery Co., Ltd.
Location
429-432, No. 268 Zhongshan Avenue East, Huangpu District, Guangzhou,China
Contact Person
Dongdong Yao