D1FVE02BCVF0A37 Parker Danfoss Proportional Pressure Reducing Valve NG6

I. Product Overview

This product is a Parker (now Danfoss Power Solutions) D1FV Series three-way proportional pressure-reducing/relieving valve. The D1FV Series is a NG6 (CETOP 03 / NFPA D03) proportional pressure reducing valve offering excellent pressure control characteristics, widely used in pilot control and secondary pressure regulation applications across various industrial hydraulic systems.

D1FVE02BCVF0A37 is a specific model within the D1FV Series, featuring onboard electronics (OBE) , a 12V solenoid, a 25 bar pressure stage, NBR seals, and a DIN connector.

The D1F Series (D1F, D1FV, D1FB, etc.) together with the D3F Series constitute Parker Danfoss’s complete proportional pressure reducing valve portfolio, offering a wide range of size and flow options from NG6 upward.

Manufactured to strict Parker/Danfoss OEM specifications, this product offers 100% direct interchangeability with original parts—no modifications required for installation. Every unit undergoes 100% application-condition simulation testing—comprehensive verification of pressure setting, flow characteristics, response time, and leakage on dedicated test benches against published specifications. Perfect OEM replacement for Parker original parts, ideal for hydraulic system repairs and preventive maintenance.

II. Technical Specifications 

D1FVE02BCVF0A37 – D1FV Series Proportional Pressure Reducing Valve

• Model: D1FVE02BCVF0A37

• Brand: Parker (now Danfoss Power Solutions)

• Product Series: D1FV Series proportional pressure reducing valve

• Mounting Size: NG6 / CETOP 03 / NFPA D03

• Maximum Operating Pressure (Ports P, A, B): 350 bar

• Maximum Tank Port (Port T) Pressure: 185 bar

• Pressure Stage: C = 25 bar (363 psi) 

• Maximum Flow Rate: 10 L/min

• Operating Temperature Range: -20°C to +60°C

• Solenoid Voltage: 12V DC

• Solenoid Current: 2.2A – 2.3A

• Control Signal (OBE version): 4-20 mA

• Seal Material: NBR (Nitrile)  (FPM / Fluorocarbon optional)

• Connector Type: DIN connector (per DIN 185301-803)

• Body Material: Cast iron

• Operation Type: Direct-acting

• Mounting Type: Subplate mounting

• Weight: 2.9 – 3.5 kg

III. Key Technical Advantages

1. Three-Way Pressure Reducing/Relieving Function
The D1FV Series is a three-way proportional pressure reducing/relieving valve. Output pressure is proportional to the electrical input signal and remains stable regardless of system pressure or flow variations (within the valve’s rated limits). When load pressure exceeds the set value, the spool switches to relieving mode, returning excess oil to the tank—achieving both reducing and relieving functions in a single valve.

2. Onboard Electronics (OBE) & Barometric Feedback Principle
D1FVE02BCVF0A37 features digital onboard electronics housed in a robust metal enclosure, allowing operation under harsh environmental conditions. Nominal values are factory preset. The valve controls pressure in the A- or B-ports using the barometric feedback principle. Parameters can be edited, saved, and duplicated using the ProPxD software.

3. Low Hysteresis & High Repeatability
The D1FV Series features low hysteresis, ensuring high repeatability and improved process and product accuracy. This makes it ideal for pilot control applications where precision is critical.

4. Manual Override
The valve is equipped with a manual override that allows spool actuation without electrical current. This feature is particularly valuable during electrical system failures or commissioning, ensuring basic functionality can be maintained in emergency situations.

5. Robust & Proven Design
Based on Parker’s long-term experience in hydraulics, the D1FV Series features a proven, robust design. The cast iron body delivers excellent impact resistance and pressure strength, ensuring long-term reliable operation in hydraulic systems up to 350 bar.

6. Wide Range of Command Signal Compatibility
The valve supports a wide range of command signals. The OBE version accepts 4-20 mA standard industrial control signals. ATEX and IECEx explosion-proof versions are also available to suit diverse application requirements.

IV. Application Areas

This proportional pressure reducing valve series is specifically designed for pilot control and secondary pressure regulation in industrial hydraulic systems, compatible with the following equipment types and hydraulic systems:

• Industrial Hydraulics: Machine tools, injection molding machines, presses—providing stable pilot pressure for proportional directional valves or variable pumps

• Test Equipment: Hydraulic test benches—precise pressure regulation for test circuits

• Metallurgical Equipment: Rolling mills, continuous casting machines—precise pressure control in hydraulic systems

• Material Handling: Forklifts, stackers—pressure regulation in hydraulic systems

• Marine & Offshore: Deck machinery, steering gears—pilot pressure source for hydraulic control systems

• General Industry: Any hydraulic system requiring precise pressure control

Typical circuit applications include: proportional pilot pressure control, secondary pressure regulation, load sensing system pressure setting, hydraulic circuit pressure limiting.

V. Expert Maintenance Tips

1. Verify Model Code Meaning (★★★★★)
The D1FV Series model code has specific meanings:

• D1FV = Proportional pressure reducing valve (D1F Series)

• E02 = Spool type

• C = Pressure stage (25 bar)

• C = Spool position

• 0 = Design code

• N = NBR seals

• K = 12V solenoid

• W = DIN connector (without plug)
  Confirm the model code matches your system requirements before installation.

2. Oil Cleanliness Management (★★★★★)
Proportional pressure reducing valves contain spool and pilot orifice structures that are highly sensitive to oil contamination. Maintain system oil cleanliness at ISO 4406 18/16/13 or better. Use 10μm or higher-precision return filters and inspect filter elements regularly.

3. Electrical Connection & Shielding

• The valve features a DIN connector (per DIN 185301-803)

• OBE version control signal is 4-20 mA

• Control signals are sensitive to electromagnetic interference—use shielded twisted-pair cables for control wiring, with shield grounded at one end

4. Installation Torque Specifications
When mounting the valve to the subplate, tighten mounting bolts to Parker/Danfoss recommended torque (NG6 valve mounting bolts are typically M5, recommended torque 5-7 Nm). Excessive torque may deform the valve body and affect internal spool movement; insufficient torque may cause seal failure and external leakage.

5. Subplate & Port Matching
The valve features an NG6 / CETOP 03 mounting interface. The subplate must conform to ISO 4401-03. Verify port configuration (P, A, B, T) matches system plumbing connections before installation.

6. Parameter Configuration (OBE Version)
OBE version nominal values are factory preset. If parameter adjustment is required, use ProPxD software via the RS-232 interface. The RS-232 connection cable must be ordered separately.

7. Storage Environment
Recommended storage temperature: -20°C to +60°C. Avoid impact loads on the valve body during installation. Handle with care to prevent drop damage to valve components.