Product Overview
The Rexroth DA6VP2B50/100FSM (Material Number R901224235) is a pilot-operated pressure unloading valve from the proven DA series, engineered for precise system pressure control and energy-efficient pump unloading in industrial hydraulic circuits. This valve automatically shifts from a high-pressure setting to a low-pressure circulation mode once the preset pressure threshold is achieved, allowing the pump to discharge at minimal resistance and reducing heat generation, power consumption, and component wear. With a nominal pressure rating of 100 bar and a size 50 (NG50) frame, the DA6VP2B50/100FSM is designed for direct integration into manifold and subplate-mounted systems, delivering reliable, repeatable pressure control in continuous-duty hydraulic power units.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve — Pilot-Operated Pressure Unloading Valve |
| Model Designation | DA6VP2B50/100FSM |
| Material Number | R901224235 |
| Nominal Pressure Rating | 100 bar (per model code designation) |
| Size / Nominal Frame | NG50 (Size 50) |
| Operating Pressure | Standard Industrial Grade (Up to rated 100 bar) |
| Adjustment Type | FSM — Pressure adjustment with setting lock / tamper-resistant adjustment element |
| Mounting & Connection | Standard ISO / Manufacturer Interface — subplate or manifold mounting |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (HL, HLP per DIN 51524) |
Engineering Features & Advantages
- Precision Pressure Control: Pilot-operated spool and poppet architecture delivers accurate, repeatable unloading and reseating pressure, minimizing pressure overshoot and maintaining stable system behavior across the full flow range.
- Energy-Efficient Unloading: Automatically diverts pump flow to tank at low pressure once the set threshold is reached, cutting throttling losses, reducing oil temperature rise, and lowering overall power consumption in continuous-duty power units.
- Lockable Adjustment (FSM): The FSM adjustment element with setting lock prevents unauthorized or vibration-induced drift of the pressure setpoint, ensuring consistent machine performance over long service intervals.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened internal components and a robust housing designed to withstand pressure spikes and contaminated operating environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
With a nominal pressure rating of 100 bar and a size 50 (NG50) frame, the DA6VP2B50/100FSM is designed for direct integration into manifold and subplate-mounted systems, delivering reliable, repeatable pressure control in continuous-duty hydraulic power units.
PRODUCT IMAGES



REXROTH DA6VP2B50/100FSM / R901224235 Pressure Unloading Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH DA6VP2B50/100FSM / R901224235 Pilot Operated Check Valve. This Germany-made hydraulic component features a leak-free poppet design, delivering reliable fluid control for heavy-duty industrial systems.