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China factory - GZ Yuexiang Engineering Machinery Co., Ltd.

GZ Yuexiang Engineering Machinery Co., Ltd.

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  3. R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare
China R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare
China R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare

  1. China R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare
  2. China R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare
  3. China R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare

R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare

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  1. Product Details
  2. Company Details

Product Specification

High Light Hyundai excavator hydraulic control valve ，R300LC-9S distribution valve assembly ，OEM excavator main control valve
R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare Parts 31Q8-17000P Distribution Valve Assembly OEM
R300LC-9S R300-9S Hydraulic Main Control Valve Assy for Hyundai Excavator Spare Parts 31Q8-17000P Distribution Valve Assembly 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 R300LC-9S R300-9S
Package Wooden Box
Part Name 31Q8-17000P
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
Parts on group MAIN CONTROL VALVE(1/5, -#1081):
Pos. Part No Qty Parts name Comments
*. 31Q8-17000P [1] MAIN CONTROL VALVE  
*. 31Q8-17001P [1] MAIN CONTROL VALVE  
N1. XKBF-01038 [1] HOUSING-P1  
4 XKBF-01440 [1] SPOOL-TRAVEL  
6 XKBF-01442 [1] SPOOL-BOOM 1  
9 XKBF-01444 [1] SPOOL-ARM 2  
11 XKBF-01446 [1] SPOOL-ARM REGEN  
12 XKBF-01447 [1] SPOOL-BUCKET  
16 XKBF-00379 [2] COVER B1-PILOT  
20 XKBF-00383 [5] PLUG  
21 XKBF-00806 [4] POPPET 1  
22 XKBF-00385 [1] POPPET  
23 XKBF-01250 [5] SPRING 1  
24 XKBF-01252 [5] PLUG  
25 XKBF-01450 [4] POPPET 2  
26 XKBF-01451 [4] SPRING 2  
27 XKBF-00442 [1] HOLDING KIT-B  
27-1. XKBF-01457 [1] POPPET-LOCK VALVE  
27-2. XKBF-01340 [1] SPRING-POPPET SIGNAL  
27-3. XKBF-01426 [1] GUIDE-POPPET  
27-4. XKBF-01458 [1] POPPET-PILOT  
27-5. XKBF-01459 [1] SEAT-POPPET  
27-6. XKBF-00903 [1] C-RING  
27-7. XKBF-00905 [1] RESTRICTOR-LOCK VLV  
27-8. XKBF-00958 [1] O-RING  
27-9. XKBF-01283 [1] O-RING  
27-10. XKBF-00962 [1] RING-BACK UP  
29 XKBF-01592 [1] O-RING  
30 XKBF-01593 [1] RING-BACK UP  
31 XKBF-01594 [1] O-RING  
32 XKBF-01595 [1] PLUG  
34 XKBF-01256 [1] HOLDING KIT-A2 BOOM 1
N34-1. XKBF-01257 [1] BLOCK P1-HOLDING  
34-2. XKBF-00910 [1] PISTON 1  
34-3. XKBF-00907 [1] GUIDE-POPPET  
34-4. XKBF-00912 [1] SPRING 1  
34-5. XKBF-00913 [1] PISTON 2  
34-6. XKBF-01248 [1] PLUG  
34-7. XKBF-01258 [1] PLUG  
34-8. XKBF-01259 [1] O-RING  
34-13. XKBF-00931 [1] PLUG  
34-15. XKBF-01265 [5] BOLT-SOCKET  
34-16. XKBF-00425 [5] WASHER-SPRING  
42 XKBF-00398 [1] CHECK VALVE ASSY  
43 XKBF-00399 [1] ORIFICE-SIGNAL  
44 XKBF-00922 [1] FILTER-COIN TYPE  
47 XKBF-00931 [2] PLUG  
50 XKBF-01275 [2] O-RING  
51 XKBF-00807 [1] NEGATIVE CONTROL VLV  
52 XKBF-00933 [2] PLUG  
53 XKBF-01276 [1] FLANGE  
55 XKBF-01279 [1] PLUG  
59 XKBF-00940 [2] O-RING  
63 XKBF-01280 [2] O-RING  
65 XKBF-01282 [5] O-RING  
65 XKBF-01282 [5] O-RING  
67 XKBF-01074 [6] O-RING  
68 XKBF-00416 [5] O-RING  
73 XKBF-01284 [6] BOLT-SOCKET  
75 XKBF-01286 [4] BOLT-SOCKET  
76 XKBF-01287 [2] BOLT-SOCKET  
78 XKBF-01289 [4] BOLT-SOCKET  
79 XKBF-00425 [6] WASHER-SPRING  
81 XKBF-00427 [4] WASHER-SPRING  
82 XKBF-01291 [1] RELIEF VALVE-MAIN  
83 XKBF-01292 [1] RELIEF VALVE-OVERLOAD  
84 XKBF-01293 [1] RELIEF VALVE-OVERLOAD  
85 XKBF-01294 [1] O-RING  
86 XKBF-00732 [1] POPPET-CHECK  
87 XKBF-00733 [1] SPRING-CHECK  
88 XKBF-01295 [2] PLUG  
92 XKBF-01543 [1] PLUG  
93 XKBF-01542 [1] POPPET  
94 XKBF-01541 [1] SPRING  
N. @ [AR] NOT SUPPLIED PARTS  
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

  • 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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Get in touch with us

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  • 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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