The 2001790 valve group is a hydraulic control assembly designed as a direct bolt-on replacement for SANY asphalt pavers. Manufactured and supplied by JESTIN, this valve group integrates multiple control sections that manage hydraulic flow for the auger, conveyor belt, screed, and auxiliary functions on S2100-2, S2100-3, S1900, and S1800-3 paver models. The assembly features a cast iron body with precision-machined hardened steel spools and high-grade sealing elements. Each unit undergoes flow testing before shipment to verify operational performance across all control sections. A 1-year warranty is included, supporting paving contractors and industrial clients in maintaining hydraulic system function and reducing unplanned downtime on highway, airport, and urban paving projects.
The valve group body is cast from iron, a material selected for its dimensional stability, pressure retention, and compatibility with standard hydraulic fluids. The cast iron housing provides a rigid structure that maintains spool alignment under operating loads and temperature variations encountered in asphalt paving environments, where hydraulic systems operate under continuous load for extended shifts.
Control spools within the valve group are machined from hardened steel to tight tolerances. The hardened surface resists wear from continuous spool shifting and particulate contamination in hydraulic fluid, while precision machining ensures accurate flow metering across each control section. Proper spool operation contributes to consistent auger speed, conveyor feed rate, and screed adjustment response, all of which influence asphalt mat quality.
The valve assembly uses high-grade seals and O-rings at all spool, port, and section interface points. These sealing elements are selected for compatibility with standard hydraulic oils and for resistance to the operating temperatures generated during continuous paver operation. The seal configuration helps prevent external leakage and internal cross-port leakage that could affect control precision or lead to hydraulic fluid loss on the job site.
The 2001790 valve group is specified as a direct bolt-on replacement for the OEM hydraulic valve assembly on SANY S2100-2, S2100-3, S1900, and S1800-3 asphalt pavers. The bolt-on installation design allows the valve group to be mounted using existing mounting points without requiring frame modification or custom fabrication. When servicing the paver hydraulic system, the valve group is often replaced alongside auger motors (RM14201800), track tension cylinders (4720002952), and hydraulic pumps to restore complete system performance. Inspecting propel motors and hose assemblies during the same service interval helps identify additional wear and prevent cross-contamination between new and degraded components. Commercial users are advised to replace hydraulic filters and conduct a full fluid flush when installing a new valve group.
Item | Details |
|---|---|
Part Number | 2001790 |
Product Name | Valve Group / Hydraulic Valve Assembly |
Brand Compatibility | SANY |
Fit Models | S2100-2 / S2100-3 / S1900 / S1800-3 |
Weight | 18.5 kg |
Dimensions | 380 × 220 × 180 mm |
Body Material | Cast iron |
Spool Type | Precision-machined hardened steel |
Control Sections | Auger / Conveyor / Screed / Auxiliary |
Related Parts | Auger Motor (RM14201800), Tension Cylinder (4720002952), Hydraulic Pump |
Warranty | 1 year |
Installation | Bolt-on replacement |
The valve group integrates four primary control sections that coordinate the paver's material handling and paving operations. The auger section regulates hydraulic flow to the auger drive, controlling the speed at which asphalt is distributed across the screed width. The conveyor section manages the conveyor belt drive that transports material from the hopper to the auger chamber, matching feed rate to paving speed. The screed section controls hydraulic cylinders for screed height adjustment and extension, influencing paving depth and mat width. The auxiliary section provides hydraulic flow for additional paver functions as configured by the machine manufacturer. Together, these sections determine the consistency of material delivery and the uniformity of the finished asphalt mat, making the valve group a critical component for paving quality control.
The 2001790 hydraulic valve assembly is compatible with SANY S2100-2, S2100-3, S1900, and S1800-3 asphalt pavers. Buyers should confirm their machine's OEM valve group part number before ordering.
The valve group is a bolt-on replacement that mounts to existing OEM mounting points on compatible SANY pavers, without requiring custom fabrication or frame modification. Standard hydraulic line disconnection and reconnection procedures apply.
The assembly integrates control sections for the auger drive, conveyor belt, screed height adjustment, and auxiliary hydraulic functions, coordinating material handling and paving operations.
The valve body is cast iron, control spools are precision-machined hardened steel, and sealing elements are high-grade seals and O-rings selected for compatibility with standard hydraulic oils.
When replacing the valve group, consider inspecting auger motors (RM14201800), track tension cylinders (4720002952), hydraulic pumps, propel motors, and hose assemblies. Replacing hydraulic filters and flushing the system during installation helps protect the new valve group from residual contamination.
