Product Overview
The Eaton DARV-W-20-K-10/50 is a high-performance proportional pressure relief valve from the Vickers line of proportional and servo valves. Engineered for precise electro-hydraulic pressure control, this valve utilizes a proportional solenoid actuator to infinitely modulate system pressure in direct response to an analog electrical command signal. Unlike conventional fixed-setting relief valves, the DARV series provides stepless pressure adjustment, enabling smooth ramp-up and ramp-down profiles that protect downstream components from pressure spikes and shock loads. With a nominal size of NG20 (SAE 20) and a pressure rating of up to 50 bar (as designated by the model code), this valve is ideally suited for industrial hydraulic systems requiring accurate, repeatable pressure regulation and remote electronic control capability.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Pressure Relief Valve (Vickers Proportional Valve Series) |
| Model Designation | DARV-W-20-K-10/50 |
| Nominal Size | NG20 (SAE 20 / CETOP 20) |
| Pressure Adjustment Range | Up to 50 bar (model code designation) |
| Actuation Type | Proportional Solenoid with analog command signal input |
| Control Signal | Standard proportional solenoid voltage/current (0–10 V DC or 4–20 mA via amplifier card) |
| Mounting & Connection | Subplate mounting per ISO 6264 / CETOP RP 121 H, SAE flange interface |
| Seal Material | NBR (Buna-N) standard; FKM (Viton) available for high-temperature service |
| Fluid Compatibility | Mineral-based hydraulic oils per DIN 51524 (HL, HLP); phosphate esters on request |
| Operating Temperature Range | -20°C to +70°C (standard NBR seals) |
| Filtration Requirement | ISO 4406 cleanliness code 18/16/13 or better recommended |
Engineering Features & Advantages
- Precision Performance: The proportional pressure relief valve (vickers proportional valve series) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Eaton OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
With a nominal size of NG20 (SAE 20) and a pressure rating of up to 50 bar (as designated by the model code), this valve is ideally suited for industrial hydraulic systems requiring accurate, repeatable pressure regulation and remote electronic control capability.
PRODUCT IMAGES
Eaton DARV-W-20-K-10/50 Proportional Pressure Relief Valve
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Shop the genuine Eaton DARV-W-20-K-10/50 Proportional Directional Valve. This Germany-made 10 V hydraulic component features a 4-way proportional design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.