Control Functions Of The Valves; Flow Characteristic Curves - Burkert 0250 Manuel D'utilisation

Control functions of the valves

Control function I
A
M
Control function e
M
A B
Control function F
A
M
P

Flow characteristic curves

the flow characteristic curve for the 2-way valve and the distribution characterisitc
1)
for the 3-way valve are shown in the following diagrams.
the inlet pressure is 1.5 bar
Flow characteristic curve (2-way-valve)
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 10
potentiometer
Flow: Kv value water [m³/h], measurement at +20 °c, 1 bar
1)
port.
relative to the total stroke of the potentiometers = 100 %
2 )
pressure quoted in [bar]: over-pressure with regard to atmospheric pressure
3 )
2-way valve for continuous control of the flow rate in outlet
port a,
motor-driven, holds position with no power
P
P
3-way valve for continuous mixing of the incoming flows
a and B to the port p,
motor-driven, holds position with no power
3-way valve for continuous distribution of the incoming flow
B
p to the outlet ports a and B,
motor-driven, holds position with no power
3).
20 30 40
[%]
2)
50 60 70 80
pressure at valve inlet port and free outlet
3 )
90 100
0250 - 9