Product Overview
The Rexroth ABZSS 20 M-31/210E/V (Material Number R904100256) is a high-performance accumulator safety block designed for hydraulic systems requiring reliable isolation, protection, and pressure control of bladder, piston, and diaphragm accumulators. As a specialized pressure control valve assembly, this unit combines multiple safety and control functions into a single compact manifold block, eliminating the need for numerous individual components and reducing potential leak points. The ABZSS series is engineered to safely isolate the accumulator from the system, provide manual or solenoid-controlled unloading, and protect against overpressure conditions. This model is a critical safety component in industrial hydraulic power units, ensuring system integrity and personnel safety by preventing uncontrolled release of stored hydraulic energy.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Accumulator Safety Block (Pressure Control Valve Assembly) |
| Model Designation | ABZSS 20 M-31/210E/V / R904100256 |
| Nominal Size | NG20 (DN20) per ISO 6264 |
| Maximum Operating Pressure | 210 bar (approx. 3,045 psi) at port P |
| Pressure Setting Range | Up to 210 bar (adjustable safety relief function) |
| Actuation Type | Manual override with solenoid pilot valve (E/V variant) |
| Mounting & Connection | Subplate mounting per ISO 6264; threaded connection for accumulator port |
| Seal Material | NBR (Buna-N) standard; FKM available on request |
| Hydraulic Fluid Compatibility | Mineral oil based hydraulic fluids per DIN 51524 |
Engineering Features & Advantages
- Integrated Safety Architecture: Combines manual shut-off, pressure relief, and solenoid-controlled unloading functions in a single manifold block, significantly reducing piping complexity and potential leak paths.
- Precision Pressure Control: The direct-operated relief valve cartridge provides accurate and repeatable pressure limitation, protecting the accumulator and downstream components from damaging overpressure events.
- Controlled Unloading: The solenoid-actuated pilot valve enables remote or automatic depressurization of the accumulator circuit, facilitating safe maintenance and system shutdown procedures.
- Industrial Reliability: Constructed from high-strength forged steel or cast iron with a corrosion-resistant coating, designed for continuous operation in demanding industrial environments.
- Direct Fit Replacement: Manufactured to exact Rexroth dimensional and functional standards, ensuring seamless integration with existing ABZSS series installations and OEM system designs.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
This model is a critical safety component in industrial hydraulic power units, ensuring system integrity and personnel safety by preventing uncontrolled release of stored hydraulic energy.
PRODUCT IMAGES
REXROTH ABZSS 20 M-31/210E/V / R904100256 Accumulator Safety Block
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
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