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)

Proportional Directional Valve (BFW/BFWN)


Technical data (Please consult with us when the application needs higher requirement than the parameter shown below)

Installation position Optional, preferably horizontal
Storage temperature range (°C) -20~80
 Ambient temperature range (°C) -20~70 -20~50



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



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.

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