Page 1035 - Softbound_Edition_19_en

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 characteristic p =f (Q) Pressure volume flow characteristic
Maximal adjustable pressure Minimal adjustable pressure
p [bar] p [bar]
300 K4167 100 K4168
90
250 80
200 p N red = 200 bar 70
60
150 50
100 p N red = 115 bar 40
30
p N red = 80 bar
50 p N red = 20 bar 20
10
0 0
25 20 15 10 5 0 5 10 15 20 25 25 20 15 10 5 0 5 10 15 20 25
A  T Q [l/min] P  A A  T Q [l/min] P  A

p =f (I) Pressure adjustment characteristics
Up to I = 40 % slightly increased hysteresis
G
p [bar]
red
200 K4169 p N red = 200 bar
180
160
140
120 p N red = 115 bar
100
80 p N red = 80 bar
60
40
20 p N red = 20 bar
0
0 10 20 30 40 50 60 70 80 90 100 I [%]

PERFORMANCE SPECIFICATIONS EXECUTION L15 / L17 (MEASURED AT 50 °C)
Oil viscosity u = 30 mm /s
2
p =f (Q) Pressure volume flow characteristic p =f (Q) Pressure volume flow characteristic
Maximal adjustable pressure Minimal adjustable pressure
p [bar] p [bar]
300 K4209 100 K4168
90
250 80
200 p N red = 235 bar 70
60
150 50
100 p N red = 135 bar 40
30
50 p N red = 95 bar 20
10
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
A  T Q [l/min] P  A A  T Q [l/min] P  A

p =f (I) Pressure adjustment characteristics
Up to I = 40 % slightly increased hysteresis
G
p [bar]
red
250 K4210 p N red = 235 bar
225
200
175
150 p N red = 135 bar
125
100 p N red = 95 bar
75
50
25 p N red = 20 bar
0
0 10 20 30 40 50 60 70 80 90 100 I [%]

www.wandfluh.com Illustrations are not binding Data subject to change 3/4 Edition: 21 21 2.3-627 E
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