Parker Type D31 D41 D81 D91 Valve | D41FBB D81FPE D1FPE | NG10-NG32 Proportional Valve

Parker Type D31, D41, D81, D91 Series Pilot-Operated Proportional Directional Valves

Product Overview: The Parker D1FB and D1FP Series represent the pinnacle of high-performance hydraulic control in industrial environments. Spanning sizes from Size 10 (NG10) to Size 32 (NG32), this series is specifically engineered for complex systems requiring massive flow handling and extreme control precision. Utilizing pilot-operated electro-hydraulic technology, these valves deliver micro-second adjustments for speed, direction, and acceleration of heavy-duty actuators.

This category highlights premium configurations: the standard proportional D41FBB00FC4NKW0X840, and the high-dynamic D81FPEA6HB2NB0039 and D1FPE55HH9NK0039D25, which represent the industry’s highest levels of frequency response. These valves are the premier choice for metal forming presses, heavy-duty casting equipment, wind turbine pitch control, and high-performance industrial power units.

Key Technical Advantages:

• Extreme Dynamic Response (FPE Series): The FPE variants incorporate high-performance pilot stages and main-stage position feedback for exceptional frequency response, ideal for sophisticated closed-loop circuits.

• Massive Flow Capacity: From the D31 (NG10) to the D91 (NG32), this series handles flow rates up to 1100 L/min with minimal pressure drop and maximum stability.

• Integrated On-Board Electronics (OBE): Advanced digital or analog control circuits are factory-calibrated to the valve’s specific flow characteristics, ensuring a seamless “plug-and-play” experience with high EMC immunity.

• Rugged Reliability: Built to withstand operating pressures up to 350 Bar (5,076 PSI), ensuring structural integrity and longevity under high-shock, high-frequency industrial cycles.

Detailed Specifications & Parameters:

• Core Series: Parker D31, D41, D81, D91 Series.

• Featured Model Matrix: D41FBB00FC4NKW0X840, D81FPEA6HB2NB0039, D1FPE55HH9NK0039D25.

• Core Performance Specs:

  • Nominal Size: Size 10 (NG10), Size 16 (NG16), Size 25 (NG25), Size 32 (NG32).

  • Max Operating Pressure: Rated up to 350 Bar (5,076 PSI).

  • Max Flow Capacity: Ranges from 100 L/min to 1100 L/min depending on the frame size.

  • Feedback Type: Electronic main-spool position feedback for closed-loop accuracy.

  • Signal Specs: Supports standard analog inputs (4-20mA / ±10V).