New 702-21-62200 Pilot Valve
The 702-21-62200 pilot valve assembly is a core electro-hydraulic control component for Komatsu excavators, widely compatible with the PC200-7, PC200-8, PC220-7, PC220-8, and other mainstream models. As the "control center" of the excavator's hydraulic system, it converts electrical signals from the machine's controller into precise hydraulic pilot pressure, directly governing the main pump output, travel speed, and overall hydraulic system responsiveness, making it indispensable to equipment performance and reliability.
Core Function & Working Principle
This pilot valve operates on the principle of proportional electromagnetic control, acting as a bridge between the excavator's electronic control unit (ECU) and the main hydraulic system:
Proportional Pressure Regulation: The valve receives variable current signals from the ECU, which adjust the magnetic force on the internal spool. This fine-tunes the opening of the pilot oil circuit, controlling the pilot pressure sent to the main pump regulator. Higher pressure increases pump displacement for faster boom, arm, and bucket movements, while lower pressure reduces flow for delicate operations or idle conditions.S
ystem Protection & Efficiency: By matching pump output to engine load and operator demand, the valve prevents unnecessary hydraulic pressure spikes and flow waste. This optimizes fuel efficiency, reduces engine load, and protects the main pump and other hydraulic components from premature wear.
Safety & Control Functions: It also plays a key role in safety systems, such as travel speed shifting and hydraulic lockout. For example, when the operator switches between high and low travel speeds, the valve adjusts pilot pressure to the travel motor's shifting valve, ensuring smooth transitions without jolts or loss of traction.
| Part number | 702-21-62200 |
| Part Name | VALVE |
| Condition | Original |
| MOQ | 1 |
| Model | PC200 |
| Packing | Neutral Packing |
| Apply to | K-OMATSU |
| Model | Excavator |
| Weight | 1KG |
| Delivery | DHL |
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Key Features & Design Advantages
High-Precision Control: The valve's internal spool and sleeve are precision-machined to micron-level tolerances, ensuring linear and responsive pressure regulation. This translates to smooth, predictable machine operation, critical for both heavy digging and fine grading tasks.
Heavy-Duty Construction: The valve body is made of high-strength steel with corrosion-resistant plating, while the solenoid coil uses high-temperature, oil-resistant materials rated for continuous operation in harsh environments. The wiring harness is protected by a braided, abrasion-resistant sleeve, and the OEM-style connector ensures a secure, water-resistant fit to prevent signal loss or intermittent faults.
Extreme Environment Durability: Designed to withstand the vibration, temperature fluctuations (-40°C to 120°C), and exposure to dust, water, and hydraulic oil common on construction sites, the valve maintains consistent performance over long service life.
Direct OEM Compatibility: The valve's dimensions, thread specifications, and electrical characteristics match the original Komatsu part exactly, requiring no modifications for installation. This allows for quick, straightforward replacement during maintenance, minimizing equipment downtime.
01
High Quality
High-quality accessories are meant to be shared-pass this on to fellow operators who need dependable parts!
02
Advanced Equipment
Brand-new construction machinery parts bring more demand to customers.
03
Professional Team
Professional team gives customers a full understanding of product performance and better use.
04
Custom Service
High-quality after-sales service, solve difficult problems for customers and guide them how to deal with them.
Application Areas
Industry Significance & Maintenance Impact
In the construction machinery industry, fuel quality can vary significantly, and even small amounts of contamination can cause severe damage to modern high-pressure fuel systems. Common issues caused by inadequate filtration include:
Injector clogging or wear, leading to reduced power, increased fuel consumption, and excessive exhaust emissions.
Fuel pump damage, resulting in costly repairs and extended equipment downtime.
Corrosion of internal fuel system components due to water contamination.
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702-21-62200
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PC200
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5-Star Customer Review
Verified Purchase | Fast Shipping | Perfect Performance.Our quality is guaranteed, and many overseas customers have given positive reviews and feedback after purchasing, stating that the performance advantages are good and they are willing to buy again. Moreover, some customers have specifically come to your company for on-site inspections and have expressed their willingness to enter into a long-term partnership with our company
ONegotiating with overseas clients
Great moments with our overseas partner!Quality wins trust, service builds long-term cooperation.We supply reliable construction machinery parts to the world.Welcome more partners to cooperate with us!
jining Tongderui Construction Machinery Co., Ltd. was established in 2011, mainly engaged in excavator parts, loader parts, bulldozer parts and dump truck parts. Our company has a high-quality professional technical research and development team engaged in product research and development in the field of Construction equipment all year round, with strong technical force.As the core force of the company's business expansion, the sales team has extensive experience and has participated in bauma CHINA in Shanghai twice in 2018 and 2024, establishing long-term cooperative relationships with international customers and accumulating rich industry resources and market insights.
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