B220401000459 Solenoid directional valve Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

B220401000459 Solenoid directional valve Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

The Sany B220401000459 solenoid directional valve is a core hydraulic control component designed specifically for Sany construction machinery. It employs a wet electromagnet and spool valve structure, controlling the on/off state, flow direction switching, and pressure unloading of hydraulic oil circuits through the electromagnetic force generated by the energization and de-energization of the solenoid coil. It is primarily used to ensure the precise movement of hydraulic actuators such as cylinders and hydraulic motors, compensate for assembly tolerances of hydraulic system components, and ensure stable, efficient, and safe operation of the hydraulic system, thereby reducing equipment wear and downtime losses. It is an ideal original equipment manufacturer (OEM) replacement component for Sany equipment maintenance and a key product for SEO promotion, covering core search keywords such as “Sany B220401000459 solenoid directional valve,” “B220401000459 solenoid valve,” “Sany hydraulic control valve,” and “B220401000459 replacement part.”

Core technical parameters

Model: Sany B220401000459
Material: The valve body is made of high-quality ductile iron (QT450-10), conforming to GB/T 1348-2009 standard; the valve core is made of 304 stainless steel; the seals are made of fluororubber (FKM); the electromagnet adopts a wet-type round head structure, and the coil is wound with high-quality copper wire.
Operating temperature: Adaptable to the typical working environment of SANY engineering machinery and industrial hydraulic systems, typically -25℃ to 120℃, maintaining stable sealing and mechanical properties within this range, suitable for high-pressure, high-temperature and harsh working conditions.
Operating parameters: Rated working pressure 31.5MPa, maximum working pressure 35MPa, rated flow 63L/min; electromagnetic control accuracy ±0.8%, commutation response time ≤0.1s, commutation frequency up to 80 times/minute, precise and stable operation; rated voltage selectable AC220V/DC24V, electromagnet power 8W, low energy consumption, and does not easily overheat during long-term power supply.
Structural design: It adopts a slide valve structure, with two-position four-way or three-position four-way functions available; the installation method is plate mounting (compliant with DIN 24340 standard), the interface specification is G3/4 internal thread, compatible with the original mounting position, and can be directly replaced; it has a built-in return spring, and the valve core automatically resets after power failure; it comes standard with a manual emergency lever, which can force reversal in the event of power failure, improving operational safety.
Shape and Dimensions: The overall structure is compact, with a valve body length of 180mm, width of 65mm, height of 88mm, mounting hole spacing of 100mm, mounting hole diameter of 12mm, and inlet/outlet diameter of 18mm.
Surface treatment: The valve body surface is treated with electrophoretic rust prevention, with a paint film thickness of 0.02~0.04mm. It has strong adhesion and can effectively resist moisture and hydraulic oil corrosion, extending the rust prevention life. The internal flow channel is treated with precision polishing, with a surface roughness Ra≤0.8μm, reducing hydraulic resistance and improving control accuracy and system efficiency.

Core functions and roles

As the “core switch” of the automated control system in Sany’s construction machinery hydraulic system, its core function is to drive the valve core movement through the electromagnetic force generated by the electromagnetic coil, thereby achieving precise control of the hydraulic oil circuit’s opening and closing and flow direction. In the hydraulic systems of Sany’s construction machinery (such as excavators, cranes, loaders, and concrete pump trucks), it is used to control the extension and retraction of the hydraulic cylinder, the forward and reverse rotation of the hydraulic motor, and the unloading of system pressure, ensuring the precise and coordinated operation of various equipment movements. It effectively avoids malfunctions such as valve core jamming, oil leakage, and electromagnetic failure, reducing equipment downtime losses, extending the service life of the hydraulic system, and lowering subsequent maintenance costs. It is a key component ensuring the reliability and automation level of Sany equipment.

Applicable Scenarios

Widely used in the core hydraulic systems of Sany construction machinery with high requirements for automation control, such as Sany SY215 and SY265 series excavators, cranes, loaders, concrete pump trucks, and other equipment. It is also compatible with industrial hydraulic systems of machine tools, hydraulic pump stations, injection molding machines, and metallurgical equipment, making it an indispensable core control component in equipment manufacturing, overhaul, and precision maintenance. It is particularly suitable for harsh operating environments such as construction sites, mines, municipal construction, and oil and gas exploration, maintaining stable performance under high pressure, high temperature, and high humidity conditions.

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