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

CERTIFICATES SYMBOL PERFORMANCE SPECIFICATIONS EXECUTION L9 (MEASURED AT 40 °C)
2
Surface Mining Standard M248 Oil viscosity u = 30 mm /s
-25 °C Electronic (A) 1 p =f (Q) Pressure volume flow characteristic p =f (Q) Pressure volume flow characteristic
to… Maximal adjustable pressure Minimal adjustable pressure
ATEX x x x x p [bar] p [bar]
IECEx x x x x 300 K4167 100 K4168
(P) 2 (T) 3 90
CCC x x x x 250 80
EAC x x x x 200 p N red = 200 bar 70
60
150 50
Australia x x x 100 p N red = 115 bar 40
30
MA x x x 50 p N red = 80 bar 20
10
UL / CSA x x 0 p N red = 20 bar 0
25 20 15 10 5 0 5 10 15 20 25 25 20 15 10 5 0 5 10 15 20 25
The certificates can be found on www.wandfluh.com A  T Q [l/min] P  A A  T Q [l/min] P  A

GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS p =f (I) Pressure adjustment characteristics
Up to I = 40 % slightly increased hysteresis
Designation Proportional pressure reducing valve Working pressure p = 350 bar G
max
Construction Direct operated by means of pilot spool Nominal pressure Ausführung L9 p [bar]
red
Mounting Screw-in cartridge construction range p = 20 bar, 80 bar, 115 bar, 200 bar 200 K4169 p N red = 200 bar
180
N
Nominal size M22 x 1,5 according to ISO 7789 Ausführung L15 / 17 160
140
Actuation Proportional solenoid p = 20 bar, 95 bar, 135 bar, 235 bar 120 p N red = 115 bar
N
100
Ambient temperature Operation as T6 Minimum adjustable < 1 bar 80 p N red = 80 bar
-25…+40 °C (L9) pressure 60
40
Operation as T4 Volume flow range See characteristic 20 0 p N red = 20 bar
-25…+70 °C (L9) Leakage oil at p = 350 bar 0 10 20 30 40 50 60 70 80 90 100 I [%]
sys
-25…+70 °C (L15 / L17) < 30 ml/min for p N red = 20, 80 (95), 115
Weight 1,95 kg (135) bar
MTTFd 150 years < 50 ml/min for p N red = 200 (235) bar PERFORMANCE SPECIFICATIONS EXECUTION L15 / L17 (MEASURED AT 50 °C)
Hysteresis ≤ 5 % at optimal dither signal Oil viscosity u = 30 mm /s
2
Repeatability ≤ 2 % at optimal dither signal
Fluid Mineral oil, other fluid on request p =f (Q) Pressure volume flow characteristic p =f (Q) Pressure volume flow characteristic
Minimal adjustable pressure
Maximal adjustable pressure
Viscosity range 12 mm /s…320 mm /s
2
2
ELECTRICAL SPECIFICATIONS Temperature range Operation as T6 p [bar] p [bar]
K4209
K4168
fluid NBR -25…+40 °C (L9) 300 100
Protection class IP65 / 66 / 67 FKM -20…+40 °C (L9) 250 90
80
Relative duty factor 100 % DF Operation as T4 200 p N red = 235 bar 70
60
Voltage tolerance ± 10 % with regard to nominal voltage NBR -25…+70 °C (L9 or L15 / L17) 150 50
40
Standard nominal 12 VDC, 24 VDC FKM -20…+70 °C (L15 / L17) 100 p N red = 135 bar 30
p N red = 95 bar
20
voltage FKM -20…+70 °C (L9) 50 0 p N red = 20 bar 10 0
Limiting current at… °C L9, 40 °C Contamination Class 18 / 16 / 13 25 20 15 10 5 0 5 10 15 20 25 25 20 15 10 5 0 5 10 15 20 25
I = 625 mA (12 VDC) efficiency A  T Q [l/min] P  A A  T Q [l/min] P  A
G
I = 305 mA (24 VDC) Filtration Required filtration grade ß 6…10 ≥ 75,
G
L15 / 17, 50 °C see data sheet 1.0-50
I = 950 mA (12 VDC) p =f (I) Pressure adjustment characteristics
G
I = 450 mA (24 VDC) Up to I = 40 % slightly increased hysteresis
G
G
L15 / 17, 70 °C p [bar]
I = 910 mA (12 VDC) ACTUATION 250 red K4210 p N red = 235 bar
G
I = 420 mA (24 VDC) Actuation Proportional solenoid, wet pin push 225
G 200
Standard nominal 9 W, 15 W, 17 W type, pressure tight 175
power Execution MKY45 / 18x60 (data sheet 1.1-183) 150 p N red = 135 bar
125
Temperature class Nominal power 9 W: T1…T6 MKU45 / 18x60 (data sheet 1.1-184) 100 p N red = 95 bar
75
Nominal power 15 W / 17 W: T1…T4 Connection Cable gland for cable Ø 6,5…14 mm 50 p N red = 20 bar
25
0
Note! Other electrical specifications see data sheet 1.1-183 Attention! The UL execution is always supplied without cable 0 10 20 30 40 50 60 70 80 90 100 I [%]
and 1.1-184 gland
www.wandfluh.com Illustrations are not binding Data subject to change 2/4 Edition: 21 21 2.3-627 E www.wandfluh.com Illustrations are not binding Data subject to change 3/4 Edition: 21 21 2.3-627 E
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