Wacker Neuson 5000159551 Reducing Valve

The Wacker Neuson Reducing Valve is a genuine OEM hydraulic component designed for the RT and RTx, RTL, RTLx, RTK, and RTKx series remote-controlled vibratory trench rollers. As a factory-sourced part, the is manufactured to the exact specification required to maintain proper hydraulic pressure regulation across the RT56-SC, RT82-SC, RT82-SC2, RTx-SC2, RTL82-SC3, RTLx-SC3, RTK82-SC3, and RTKx-SC3 trench roller families. Sourcing a genuine OEM Reducing Valve means you get the correct pressure rating and port configuration for a direct, no-guesswork installation. Wacker Neuson part covers one of the broadest fitment ranges in the RT series lineup, making it a high-utility stock item for fleet operators and service technicians alike.

Key Features

• Genuine OEM Pressure Rating: — Factory-calibrated to the exact pressure-reduction spec required by Wacker Neuson RT-series hydraulic circuits — no field adjustment needed after installation.
• Direct Hydraulic Port Match: — Thread form, port size, and body dimensions correspond precisely to the original valve position in the hydraulic manifold, enabling a clean swap without adapters.
• Broad RT-Series Fitment: — Covers RT56-SC, RT82-SC, RT82-SC2, RTx-SC2, RTL82-SC3, RTLx-SC3, RTK82-SC3, and RTKx-SC3 vibratory trench rollers across multiple production variants, including EU configurations.
• Protects Downstream Hydraulic Components: — A correctly functioning reducing valve maintains the secondary circuit at the designed working pressure, preventing overload of actuators, motors, and seals that depend on regulated flow.
• Hydraulic System Safety: — An out-of-spec or failed reducing valve can cause uncontrolled pressure spikes in the secondary circuit, leading to seal failures or loss of directional control — replacing it promptly restores safe, predictable machine behavior.

A hydraulic reducing valve limits the pressure delivered to a secondary circuit within the machine's overall hydraulic system, keeping it below the main system pressure. In a remote-controlled trench roller like the RT82-SC2 or RTLx-SC3, this regulated secondary pressure governs functions such as drum drive or steering actuation, ensuring they operate within their designed pressure range regardless of load conditions. When the reducing valve wears, sticks, or fails, the affected circuit may receive excessive pressure — causing accelerated seal wear, erratic machine response, or component damage — or insufficient pressure, resulting in sluggish or unresponsive operation.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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