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- Products
Proportional Directional Valve (BFW 2X)
The built-in 4/2 and 4/3-way directly operated Proportional solenoid valves
Direct operated spool without electrical position feedback
Type BFW and BFWN
Nominal sizes 6 and 10
Series 2X
Maximum operating pressure 315bar
Maximum flow 42L/min (DN6)
Maximum flow 75L/min (DN10)
Direct operated spool without electrical position feedback
Type BFW and BFWN
Nominal sizes 6 and 10
Series 2X
Maximum operating pressure 315bar
Maximum flow 42L/min (DN6)
Maximum flow 75L/min (DN10)
Proportional Directional Valve (BFW/BFWN)
Technical data (Please consult with us when the application needs higher requirement than the parameter shown below)
| Model | BFW | BFWN |
| Installation position | Optional, preferably horizontal | |
| Storage temperature range (°C) | -20~80 | |
| Ambient temperature range (°C) | -20~70 | -20~50 |
Hydraulic
| Operating pressure (bar) | Ports A, B, P | 315 |
| Port T | 210 | |
|
Nominal flow When qvnom at ΔP=10bar (L/min) |
DN6 | 7, 15 and 26 |
| DN10 | 30, 60 | |
| Flow (Max. Permissible) (L/min) | DN6 | 42 (with double flow 80) |
| DN10 | 75 (with double flow 140) | |
| Pressure fluid | Mineral oil (HL, HLP) to DIN 51 524; For other fluid please consult with us. | |
| Fluid temp. Range (°C) | -20~80 (+40~+50 is preference) | |
| Viscosity range (mm²/s) | 20~380 (30~46 is preference) | |
| Hysteresis (%) | ≤5 | |
| Reversal error (%) | ≤1 | |
| Response sensitivity (%) | ≤0.5 | |
| Cleanliness | Maximum permissible degree of pressure fluid contamination to NAS 1638 to class 9 Recommended filter β10≥75 | |
Electrical
| Model | BFW1) | BFWN | ||
| Voltage type | Direct voltage | |||
| BFWN Command signal | Voltage input “A1” | (V) | ±10 | ±10 |
| Current input “F1” | (mA) | 4~20 | 4~20 | |
| Max. Current per solenoid (A) | 2.5 | 2.5 | ||
| Solenoid coil Resistance (Ω) | Cold value at 20°C | 6DN2 | 10DN2 | |
| Max. Warm value | 6DN3 | 10DN3 | ||
| Duty cycle (%) | 100 | |||
| Max. Coil temperature2) (°C) | up to 150 | |||
| Electrical connection | socket as per DIN EN 175 301-803 and ISO 4400 with component plug to DIN EN 175301-803 and ISO 4400 | socket as per DIN EN 43 563-AM6-3 with component plug to DIN 43 563-BF6-3/Pg11 | ||
| Insulation of valve to DIN 40 050 | IP 65 | |||
Control electronics
| BFW (type) | Analogue amplifier in Eurocard format3) | Details refer to proportional amplifier | ||
| Digital amplifier in Eurocard format3) | Details refer to proportional amplifier | |||
| BFWN (type) | Analogue command value module | Integrated into the valves | ||
| Supply voltage | Nominal voltage | VDC | 24 | |
| BFWN Lower limiting value | V | 21/22 | 19 | |
| BFW1) Upper limiting value | V | 35 | ||
| Amplifier current consumption | /max | A | 1.8 | 1.8 |
| Max. Impulse current | A | 3 | 3 | |
1) With HOYEA control amplifier.
2) Due to the occurring surface temperature of the solenoid coils, the European Standards DIN EN 563 and DIN EN 982.
3) Separate order.