EX200-6 Hydraulic Control Valve Assy for Hitachi Excavator Spare Parts 4178811

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Product Details
Company Details

Product Specification


High Light	Hitachi excavator hydraulic control valve ，EX200-6 main control valve ，OEM excavator control valve assy

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

Category	Excavator Hydraulic Parts
Model	EX200-6
Part Number	4178811 4224900 4210509 4398652 4478056 439-865
Package	Wooden Box
Application	Excavator
Product Attributes	Excavator Parts

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.

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

from Quality China Factory

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Year Established:

2013 


Total Annual:

20000-3000000


Employee Number:

50~93 


Ecer Certification：

Verified Supplier 

GZ Yuexiang Engineering Machinery Co., Ltd. GZ Yuexiang Engineering Machinery Co., Ltd, is a foreign trade company integrating development, sales, procurement, warehousing, transportation and service. Founded in September 2013, we have more than twelve years of experience in machinery t... GZ Yuexiang Engineering Machinery Co., Ltd. GZ Yuexiang Engineering Machinery Co., Ltd, is a foreign trade company integrating development, sales, procurement, warehousing, transportation and service. Founded in September 2013, we have more than twelve years of experience in machinery t...

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Reach Us
GZ Yuexiang Engineering Machinery Co., Ltd.
429-432, No. 268 Zhongshan Avenue East, Huangpu District, Guangzhou,China
https://www.ecer.com/corp/uuuf8dn-hydraulicparts.html

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