Hydraulic instability in R210–R220 class machines is often misdiagnosed as pump weakness, while the real issue originates from inconsistent pressure regulation inside the main valve block. 31Q8-17780 valve assembly is developed for Hyundai R210, R215, and R220 excavators, governing internal hydraulic routing and pressure behavior across multiple working circuits.
Item NO.:
31Q8-17780Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYS
| Part Number | 31Q8-17780 |
|---|---|
| Part Name | Vavle Assbemly |
| Compatible Brand | Hyundai |
| Applicable Models | R210 / R215 / R220 |
| Application | Excavator |
| Material | Precision Machined Alloy Steel Body |
| Product Color | Industrial Metallic Finish |
| Working Temperature | -40°C to 120°C |
| Key Function | Hydraulic flow coordination and multi-circuit pressure management |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |

Aligns multi-channel oil flow behavior to support synchronized machine movement.

Adjusts internal hydraulic response during sudden changes in excavation resistance.

Helps stabilize simultaneous operation of boom, arm, bucket, and travel functions.


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