AV170 31N4-15120 Hydraulic Main Control Valve for R130 R140 R150 Excavator Main Valve Assembly
The AV170 31N4-15120 Hydraulic Main Control Valve is designed for compatible R130, R140, and R150 excavators. As a central component of the excavator hydraulic system, the main control valve distributes and regulates hydraulic oil flow to the machine's corresponding hydraulic circuits. Featuring a ...
AV170 hydraulic main control valve
,R130 excavator main valve assembly
,excavator spare parts with warranty
The AV170 31N4-15120 Hydraulic Main Control Valve is designed for compatible R130, R140, and R150 excavators. As a central component of the excavator hydraulic system, the main control valve distributes and regulates hydraulic oil flow to the machine's corresponding hydraulic circuits.
Featuring a multi-spool valve structure, heavy-duty cast housing, precision-machined internal passages, multiple hydraulic ports, and integrated control sections, the 31N4-15120 Main Control Valve is designed to provide stable hydraulic control under demanding construction and earthmoving conditions.
This complete valve assembly is suitable for replacing a worn, internally leaking, damaged, or malfunctioning main valve during excavator hydraulic system repair, overhaul, and machine rebuilding.
Key Features
- Part Number: 31N4-15120
- Valve Model: AV170
- Product Name: Hydraulic Main Control Valve
- Compatible Models: R130 / R140 / R150
- Multi-Spool Design: Controls multiple compatible hydraulic circuits
- Stable Oil Distribution: Designed to regulate hydraulic flow between pump supply and working components
- Precision Valve Components: Accurately machined internal passages and spool assemblies
- Heavy-Duty Housing: Robust construction for excavator working environments
- Multiple Hydraulic Ports: Designed for connection to corresponding machine hydraulic lines
- Reliable Sealing: Helps maintain hydraulic pressure and minimize leakage when properly installed
- Complete Assembly: Convenient solution for main valve replacement
- Quality Inspection: Available with pre-shipment inspection
Product Specifications
| Item | Details |
|---|---|
| Product Name | Hydraulic Main Control Valve |
| Valve Model | AV170 |
| Part Number | 31N4-15120 |
| Compatible Models | R130 / R140 / R150 |
| Machine Type | Excavator |
| Product Type | Main Valve / Control Valve Assembly |
| System | Excavator Hydraulic System |
| Structure | Multi-Spool Hydraulic Valve |
| Application | Hydraulic Flow Distribution & Control |
| Category | Excavator Hydraulic Spare Parts |
| Condition | New Replacement Part |
| Packaging | Heavy-Duty Export Packaging |
| Shipping | Worldwide Shipping Available |
Main Function
The excavator main control valve receives pressurized hydraulic oil from the hydraulic pump and directs the flow to the appropriate hydraulic circuits according to machine control inputs.
Depending on the excavator configuration, the valve works with hydraulic circuits responsible for functions such as boom, arm, bucket, swing, and travel operations.
Accurate oil-flow distribution is important for smooth hydraulic response and coordinated excavator operation.
Common Main Control Valve Problems
A worn or damaged hydraulic main valve may be associated with symptoms such as slow hydraulic response, weak working functions, internal hydraulic leakage, external oil leakage, inconsistent actuator movement, pressure loss, or abnormal operation of individual hydraulic functions.
Because similar symptoms may also be caused by the hydraulic pump, pilot system, cylinders, motors, hoses, sensors, or contamination, the complete hydraulic system should be properly diagnosed before replacing the valve.
Compatible Excavator Models
The AV170 31N4-15120 Main Control Valve is intended for compatible:
R130 Excavator • R140 Excavator • R150 Excavator
Suitable for machines working in:
Construction • Earthmoving • Roadwork • Mining • Quarrying • Infrastructure • Excavation Projects
Important Fitment Information
Hydraulic control valves with similar external appearances can have different spool configurations, hydraulic port arrangements, relief valve settings, pilot circuits, mounting dimensions, and internal specifications.
Before ordering, please verify AV170 / 31N4-15120 against your original valve.
For accurate compatibility confirmation, please provide:
Part Number + Excavator Model + Machine Serial Number + Valve Nameplate + Clear Photos of the Original Main Valve + Hydraulic Port Layout
We recommend confirming the complete valve configuration before shipment rather than selecting the part only by excavator model.
Why Choose JISION?
JISION supplies hydraulic main control valves, hydraulic pumps, swing motors, travel motors, center joints, pilot valves, solenoid valves, seal kits, engine components, and electrical parts for construction machinery.
We support parts matching, wholesale orders, pre-shipment inspection, secure export packaging, and worldwide shipping.
For heavy hydraulic components such as main control valves, protective packaging can be provided to help protect hydraulic ports, valve sections, mounting surfaces, and control components during international transportation.
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AV170 31N4-15120 hydraulic main control valve for R130 R140 R150 excavators. Complete replacement excavator main valve assembly and hydraulic parts from JISION.
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