The Wacker Neuson Pressure Relief Valve is a genuine OEM component designed for the RD18, RD24, RD27, and RD28 series tandem rollers. As a direct factory replacement, this valve ships with the exact pressure rating and port dimensions required by the hydraulic system on these machines. Fitment spans the full range of RD-series variants, including standard, C, O, DPF, SE, and US configurations across multiple build codes. Sourcing the correct OEM part keeps your hydraulic circuit operating within its intended parameters and avoids the guesswork of cross-referencing non-OEM alternatives.
Key Features
- Factory-Calibrated Cracking Pressure — Manufactured to the exact pressure threshold specified for RD-series hydraulic circuits, so the valve opens and closes at precisely the right point.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, carrying part number 5100011972 for straightforward verification against your machine's parts manual.
- Broad RD-Series Compatibility — Fits RD18-80, RD18-100, RD24-100, RD27-120, RD28-120, and their C, O, DPF, SE, and US variants, covering over 40 individual machine configurations.
- Direct Hydraulic System Drop-In — Matches the original port thread size and body envelope, allowing installation into the existing hydraulic circuit without rework or adapters.
- Protects the Hydraulic System from Overpressure — A correctly functioning pressure relief valve prevents damaging pressure spikes that can burst hoses, crack housings, or destroy hydraulic pump components.
- Critical Safety Function — In drum-drive and vibration hydraulic circuits, an out-of-spec or failed relief valve can cause uncontrolled machine behavior; using the correct OEM-rated part maintains safe operating control.
A pressure relief valve acts as the hydraulic system's safety ceiling — it monitors line pressure and diverts fluid back to the reservoir the moment pressure exceeds the system's rated limit. On tandem rollers like the RD-series, this protects the drum drive and vibration circuits from pressure spikes caused by sudden load changes or operator inputs. When the valve wears, sticks open, or loses its calibrated cracking pressure, the machine may exhibit weak drum drive, excessive heat buildup, or erratic vibration output, all signs that the valve needs immediate replacement.
Part Details
| Part Number | 5100011972 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Pressure Relief Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18-80 Tandem Roller | RD18-80 | 5100011382, 5100047360 |
| RD18-100 Tandem Roller | RD18-100 | 5100011383, 5100047361 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD24-100 Tandem Roller | RD24-100 | 5100011385, 5100047374 |
| RD27-120 Tandem Roller | RD27-120 | 5100011386 |
| RD24-100 C Tandem Rollers | RD24-100 C | 5100011387 |
| RD27-120 C Tandem Roller | RD27-120 C | 5100011388 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD24-100 Tandem Roller | RD24-100 US | 5100021755 |
| RD28-120 Tandem Roller | RD28-120 US | 5100021756 |
| RD24-100 C Tandem Roller | RD24-100C US | 5100021757 |
| RD28-120 C Tandem Roller | RD28-120C US | 5100021758 |
| RD24-100 O Tandem Roller | RD24-100O US | 5100021759 |
| RD28-120 O Tandem Roller | RD28-120O US | 5100021800 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD 18-100 C | RD18-100c | 5100047362 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD28-120 | RD28-120 | 5100047375 |
| RD24-100c | RD24-100c | 5100047376 |
| RD28-120c | RD28-120c | 5100047377 |
| RD24-100o | RD24-100o | 5100047378 |
| RD28-120o | RD28-120o | 5100047379 |
| RD24-100 DPF | RD24-100 DPF | 5100047380 |
| RD28-120 DPF | RD28-120 DPF | 5100047390 |
| RD24-100c DPF | RD24-100c DPF | 5100047391 |
| RD28-120c DPF | RD28-120c DPF | 5100047392 |
| RD24-100o DPF | RD24-100o DPF | 5100047393 |
| RD28-120o DPF | RD28-120o DPF | 5100047394 |
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.
