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Proportional pressure reducing valve Proportional pressure reducing valve
Proportional pressure relief valve

TYPE CODE PERFORMANCE SPECIFICATIONS
2
M D P F A04 - - - / - # Oil viscosity u = 30 mm /s
Pressure reducing valve p = f (Q) Pressure volume flow characteristics p = f (n) Pressure adjustment characteristics
red
red
Direct operated Statically adjusted at nominal pressure Measured at Q = 0 l/min (static)
25 bar execution 25 bar execution
Proportional *Limit of the operating range **Slightly increased hysteresis
p [bar] p [bar]
Flange construction
30 K1145 25 K1147
Mounting interface according to Wandfluh standard, NG4-Mini 20
20 15
Regulation in A and B P/AB in B P/B ∗
in A P/A 10  10
5
Nominal pressure range p 25 bar 25 **
N red 0 0
Nominal voltage U 12 VDC G12 6 4 2 0 2 4 6 0 10 20 30 40 50 60 70 80 90 100 l [%]
N A  T Q [l/min] P  A
24 VDC G24
without coil X5
Slip-on coil Metal housing round W DIMENSIONS
Metal housing square M Actuation on both sides Actuation on A or B side

Connection execution Connector socket EN 175301-803 / ISO 4400 D A B A
Connector socket AMP Junior - Timer J 9.5
Connector Deutsch DT04 - 2P G 5.2 MD= 5.2Nm
6
Sealing material NBR 77.2
FKM (Viton) D1 37 38
W = 32
Manual override Manual override HB4,5
Screw plug HB0
10 70 60 10 50
MD=5Nm MD=30Nm
Design index (subject to change) 205 6.2 17.7 50 57.2 7.3
2.3-825 138.4
GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
A
Designation Proportional pressure reducing valve Working pressure p = 350 bar
max
Construction Direct operated Nominal pressure P N red = 25 bar
Mounting Flange construction range 76.3
Nominal size NG4-Mini according to Wandfluh Minimum adjustable < 0,5 bar 35
standard pressure M =
Actuation Proportional solenoid Volume flow range Q = 0…4 l/min
Ambient temperature -25…+70 °C Leakage oil p = 350 bar 10
sys
Weight 900 kg (1 solenoid) p = 0 bar: < 100 ml/min 14.7 53
red
1300 kg (2 solenoids) p = 25 bar: < 320 ml/min 138.4
red
MTTFd 150 years Hysteresis ≤ 4 % at optimal dither signal
Repeatability ≤ 1 % at optimal dither signal
ELECTRICAL SPECIFICATIONS Fluid Mineral oil, other fluid on request HYDRAULIC CONNECTION PARTS LIST
Viscosity range 12 mm /s…320 mm /s
2
2
Protection class Connection execution D: IP65 Position Article Description
Connection execution J: IP66 Temperature range -25…+70 °C (NBR) 28 10 206.2… W.S37 / 19 x 50
Connection execution G: IP67 and IP69K fluid -20…+70 °C (FKM) 14 260.5… M.S35 / 19 x 50
Relative duty factor 100 % DF Contamination Class 18 / 16 / 13 50 160.2052 O-ring ID 5,28 x 1,78 (NBR)
Standard nominal 12 VDC, 24 VDC efficiency P 160.6052 O-ring ID 5,28 x 1,78 (FKM)
voltage Filtration Required filtration grade ß 6…10 ≥ 75, A B 14 27 60 160.2187 O-ring ID 18,72 x 2,62 (NBR)
Limiting current at I = 1360 mA (U = 12VDC) see data sheet 1.0-50 T T0
G
N
50 °C I = 680 mA (U = 24VDC) 70 154.2700 Knurled nut
G N

Note! Other electrical specifications see data sheet 1.1-173
(slip-on coil W) and 1.1-174 (slip-on coil M)

www.wandfluh.com Illustrations are not binding Data subject to change 2/4 Edition: 22 01 2.3-825 E www.wandfluh.com Illustrations are not binding Data subject to change 3/4 Edition: 22 01 2.3-825 E
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