| General Info | Product Series | Parker D91FB Series (Pilot-Operated Proportional Directional Control Valve) |
| Full Part Number | D91FBE01HC1NF0014 | |
| 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 | E01 (Specific spool design with optimized overlap characteristics) | |
| Rated Flow | 450 L/min (at valve pressure drop Δp = 5 bar per metering edge) | |
| Max. Operating Pressure | 350 bar | |
| Pilot Pressure | 25 bar (required for proper pilot operation and maximum stability) | |
| Pilot Connection | Internal pilot oil supply, external drain | |
| Electrical Characteristics | Control Type | Integrated Digital On-Board Electronics (OBE) |
| Supply Voltage | 24 VDC (typically ±15% tolerance) | |
| Command Signal | 0 to ±10 V (Analog voltage input) | |
| Flow Direction | 0 to +10 V = P to B | |
| Electrical Connector | 6 + PE (Standard industrial connector) | |
| Material & Environment | Seal Material | NBR (Nitrile Rubber) (Standard for mineral oils) |
| Operating Temperature | -20°C to +60°C | |
| Fluid Type | Hydraulic oil per DIN 51524 … 535, Water glycol | |
| Valve Body Material | Cast iron | |
| Special Features | Pilot Stage | NG06 pilot valve with high repeatability |
| Main Stage | Main spool with LVDT position feedback for closed-loop control | |
| Flow Characteristics | Progressive flow characteristics for sensitive flow adjustment | |
| Weight | 18.5 kg | |
| Special Notes | Custom Code (0014) | Specific Modification Number. May involve special zero-point settings, ramp times, specific flow curves, or proprietary test reports. |
D91FBE01HC1NF00 Parker – Parker Proportional Valve
- About the Flow (Code H): In the Parker D91FB series, the letter
Hindicates a flow rating of 450 L/min (at Δp = 5 bar per metering edge). This valve is designed for very large industrial applications such as heavy presses, large injection molding machines, and steel mill equipment. - About the Spool (Code E01): The
E01spool code provides specific progressive flow characteristics, allowing for sensitive and gradual flow adjustment. This is ideal for applications requiring smooth acceleration and deceleration of large actuators. - About the Pilot Connection (Code 1): The
1in the part number indicates internal pilot supply and external drain. This means the pilot oil is taken from the main pressure port internally, while the pilot drain returns to the tank externally. This configuration is standard for most applications and helps maintain stable pilot pressure. - About the Seals (Code N): This valve uses NBR (Nitrile) seals, which are suitable for standard mineral-based hydraulic oils and water glycol fluids. If your system uses phosphate ester fluids or operates at very high temperatures, you would need a valve with FKM (Viton) seals.
- About the Custom Code (0014): The
0014suffix 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 D91FB valve without the
0014suffix. 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 D91FB valve without the
Original price was: $5,542.00.$3,988.00Current price is: $3,988.00.
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