| General Info | Product Series | Parker D91VW Series (High-Flow Pilot-Operated Proportional Directional Control Valve) |
| Full Part Number | D91VW004C4NJWI3N92 | |
| Size & Mounting | Nominal Size | NG25 (ISO 4401-08 / CETOP 8) |
| Mounting Pattern | Subplate mounting (requires NG25 interface) | |
| Hydraulic Performance | Valve Type | Pilot-operated proportional directional valve |
| Spool Type | Type VW (Specific spool design with optimized overlap characteristics) | |
| Rated Flow | Approx. 800 L/min (at valve pressure drop Δp = 10 bar) | |
| Max. Operating Pressure | Ports P, A, B: 350 bar; Port T: 250 bar | |
| Pilot Pressure | Minimum 12 bar (required for proper pilot operation) | |
| Electrical Characteristics | Control Type | Integrated Digital On-Board Electronics (OBE) |
| Supply Voltage | 24 VDC (typically ±15% tolerance) | |
| Command Signal | ±10V (Analog voltage input) | |
| Electrical Connector | Standard industrial plug (Check pinout on nameplate) | |
| Material & Environment | Seal Material | NBR (Nitrile Rubber) (Standard for mineral oils) |
| Operating Temperature | -20°C to +50°C (Standard NBR range) | |
| Fluid Viscosity Range | Recommended 10 ~ 380 mm²/s (cSt) | |
| Special Features | Pilot Stage | High-response pilot valve with LVDT position feedback |
| Main Stage | Main spool with LVDT position feedback for closed-loop control | |
| Spool Position Monitoring | Available (Center position monitoring option) | |
| Special Notes | Custom Code (N92) | Specific Modification Number. May involve special zero-point settings, ramp times, specific flow curves, or proprietary test reports. |
D91VW004C4NJWI3N Parker Hydraulic Valve
- About the Flow (Code 004): In the Parker D91VW series, the number
004indicates a specific flow rating. Based on the NG25 size and pilot-operated design, this valve is capable of handling flows up to approximately 800 L/min (at Δp = 10 bar). This makes it suitable for very large industrial applications such as heavy presses, large injection molding machines, steel mill equipment, and marine hydraulic systems. - About the Spool (Code VW): The
VWspool type typically features optimized overlap characteristics for precise null control. This is critical for applications requiring zero steady-state error in closed-loop position or force control. - About the Seals (Code N): This valve uses NBR (Nitrile) seals, which are suitable for standard mineral-based hydraulic oils. If your system uses fire-resistant fluids or operates at high temperatures, you may need a valve with FKM (Viton) seals.
- About the Custom Code (N92): The
N92suffix indicates a factory-specific modification. This could involve special tuning of the PID parameters, specific ramp times, or unique flow characteristics tailored to a particular machine or application.- Replacement Advice: Do not replace it with a standard D91VW valve without the
N92suffix. The internal digital electronics and tuning parameters may not match your system, potentially causing instability, poor performance, or machine faults.
- Replacement Advice: Do not replace it with a standard D91VW valve without the
Original price was: $5,541.00.$1,655.00Current price is: $1,655.00.
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