Core Product Positioning
It belongs to electrically controlled actuators in the hydraulic system of construction machinery, serving as a critical "bridge" connecting electrical control and hydraulic power. Its core function is to control the on/off, flow direction or pressure of hydraulic oil via electrical signals, thereby accurately driving the operation of equipment.
Applicable Equipment & Scenarios
- Compatible Models: Mainly fits Komatsu wheel loaders, including classic models such as WA200-3, WA300-3, WA380, WA420, and can also be compatible with some other brands of construction machinery with the same specifications.
- Application Functions: Usually used to control confluence/shunt of the hydraulic system, travel speed, power steering, and movements of working devices (bucket, boom), etc. It is a core component that ensures power distribution and operational response of loaders.
Key Industry Technical Points
. Working Principle:
The coil generates electromagnetic force when energized, pulling the spool to change the on/off/switching of the hydraulic circuit; when de-energized, the spring resets, and the oil circuit returns to its initial state, realizing electrically controlled hydraulic operation. The response speed directly affects the operational feel of the equipment.
Industry Selection & Quality Requirements:
- Must strictly match the original part number (17A-15-17271) to ensure full compatibility of installation dimensions, interfaces and electrical parameters, avoiding adaptation failures.
- Core quality requirements: temperature-resistant coil, vibration resistance (adapted to harsh working conditions of construction machinery), wear-resistant spool, and seal parts resistant to hydraulic oil corrosion, ensuring long service life in dusty, high-temperature, high-vibration construction site environments.
Industry Value & Maintenance:
ndustry Value
As a vulnerable and consumable part, it is a rigid-demand accessory in the construction machinery maintenance and after-sales market. Domestic replacement parts (such as Tongderui) are a cost-effective supplement to original parts
Maintenance
Common faults: coil burnout, spool jamming, seal oil leakage, which will cause weak equipment movement, deviation, and slow response, making it a key component for troubleshooting hydraulic system faults of loaders.
Industry Background
This type of construction machinery solenoid valve is a core basic component for the hydraulic and electronic control upgrading of heavy equipment. With the intelligent development of construction machinery, solenoid valves are also evolving towards high response, high reliability and with status monitoring. Meanwhile, domestic replacement parts occupy an important share in the global after-sales market by virtue of cost advantages.
