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Proportional pressure reducing valve
Proportional pressure reducing valve

PERFORMANCE SPECIFICATIONS EXECUTION L9 (MEASURED AT 40 °C)
Oil viscosity u = 30 mm /s
2
p = f (Q) Pressure volume flow characteristics p = f (n) Pressure adjustment characteristics
red
red
Maximal adjustable pressure Measured at Q = 1 l/min
p [bar] p [%]
400 K0435_1 100 K1005
300 P N red = 280 bar 80
60
200 P N red = 220 bar
P N red = 160 bar 40
100 P N red = 80 bar 20
P N red = 50 bar
0 P N red = 20 bar 0
60 40 20 0 20 40 60 0 20 40 60 80 100 l [%]
A  T Q [l/min] P  A

p = f (Q) Pressure volume flow characteristics Q = f (p) Leakage volume flow characteristic
red L
Minimal adjustable pressure A (1) → T (3) (pressure in P (2) = 350 bar)
*Consumer resistance depending on the system Q [cm /min]
3
p [bar] a: P N red = 160/220/280 bar b: P N red = 20/50/80 bar 1000 K0760_1
40 K0443_1 800
a
30 600
b
20 400
200
10  ∗
0
50
100
0 0 P N red = 20/50/80 bar 150 200 250 300 350 p [bar]
60 40 20 0 20 40 60 P N red = 160/220/280 bar
A  T Q [l/min] P  A

PERFORMANCE SPECIFICATIONS EXECUTION L15 / L17 (MEASURED AT 50 °C)
2
Oil viscosity u = 30 mm /s
p = f (Q) Pressure volume flow characteristics p = f (n) Pressure adjustment characteristics
red red
Maximal adjustable pressure Measured at Q = 1 l/min
p [bar] p [%]
400 K0434 100 K1002
P N = 350 bar
300 80
P N = 275 bar
60
200 P N = 200 bar
40
100 P N = 100 bar 20
P N = 63 bar
0 P N = 20 bar 0
60 40 20 0 20 40 60 0 20 40 60 80 100 l [%]
A  T Q [l/min] P  A

p = f (Q) Pressure volume flow characteristics Q = f (p) Leakage volume flow characteristic
red L
Minimal adjustable pressure A (1) → T (3) (pressure in P (2) = 350 bar)
*Consumer resistance depending on the system Q [cm /min]
3
p [bar] 1000 K0760_2
40 K0443_2 a: P N red = 200/275/350 bar b: P N red = 20/63/100 bar 800
a
30 600
b
20 400
200
10  ∗
0
100
50
0 0 P N red = 20/63/100 bar 150 200 250 300 350 p [bar]
60 40 20 0 20 40 60 P N red = 200/275/350 bar
A  T Q [l/min] P  A

www.wandfluh.com Illustrations are not binding Data subject to change 3/4 Edition: 19 19 2.3-635 E
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