The Wacker Neuson Pressure Relief Valve is a genuine OEM component designed for the RD40-130 and RD45-140 tandem roller series. As a factory-sourced part, it meets the exact pressure tolerances and material specifications required by Wacker Neuson for these machines — no guesswork on fitment or compatibility. This valve covers an extensive range of RD40-130 and RD45-140 variants including standard, C, O, US, DPF, and.3 configurations, making the correct choice across the full roller family. When your hydraulic system depends on precise pressure regulation, installing the right OEM part is the only call that makes sense.
Key Features
- Exact OEM Pressure Rating — Genuine Wacker Neuson manufacture ensures the valve opens and relieves at the hydraulic pressure specification your roller was engineered to operate within.
- Drop-In Hydraulic Replacement — Matches the original port size, thread pitch, and body dimensions for a direct installation into the existing hydraulic circuit with no rework.
- Broad RD Series Coverage — Fits the full RD40-130 and RD45-140 tandem roller family, including standard, C, O, US, DPF, and .3 variants across multiple serial number ranges.
- Protects the Hydraulic System — A correctly functioning pressure relief valve prevents overpressure events that can damage pumps, motors, and hoses; a failed or out-of-spec valve puts the entire hydraulic circuit at risk.
- Hydraulic System Safety — Pressure relief valves are a critical safety element in any hydraulic circuit. Using a genuine OEM part rated to the correct relief pressure helps ensure the system operates within its designed pressure envelope.
A pressure relief valve acts as a safety gate within the hydraulic system, automatically diverting fluid flow when circuit pressure exceeds a set threshold. On compaction equipment like the RD40-130 and RD45-140 tandem rollers, this protects the hydraulic pump, drive motors, and associated plumbing from damaging overpressure spikes that can occur under heavy load or during sudden directional changes. When the valve sticks, leaks, or loses its calibrated cracking pressure, the machine may exhibit sluggish drive response, excessive heat buildup in the hydraulic oil, or intermittent loss of drum drive — all signs that immediate replacement is needed.
Part Details
| Part Number | 5100012092 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pressure Relief Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 Tandem Roller | RD40-130 | 5100011391, 5100047382 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392, 5100047383 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130c | RD40-130c | 5100047384 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140o | RD45-140o | 5100047387 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
