106
TECHNICAL DATA
-40
-20
0
20
40
60
80
100
120
140
°C
16
14
12
10
8
6
4
2
0
W
orking pr
es
sur
e
Working temperature
bar
PRESSURE VARIATION
ACCORDING TO
TEMPERATURE
For water and harmless fluids to
which the material is classified as
CHEMICALLY RESISTANT. In other
cases, a reduction of the nominal
PN pressure is required
(25 years with safety factor).
The information in this leaflet is provided in good faith. No liability will be accepted concerning technical data that is not directly covered by recognised
international standards. FIP reserves the right to carry out any modification. Products must be installed and maintained by qualified personnel.
PRESSURE DROP
GRAPH
Pr
es
sur
e dr
op
Flow Rate
bar
1
10
100
1000
10000
l/min
1
0.1
0.01
0.001
DN 15
DN 10
DN 20 DN 25DN 32DN 40 DN 50
K
V
100 FLOW
COEFFICIENT
The K
v
100 flow coe
ffi
cient is the
Q flow rate of litres per minute of
water at a temperature of 20°C that
will generate
'
p= 1 bar pressure
drop at a certain valve position.
The K
v
100 values shown in the
table are calculated with the valve
completely open.
DN
10
15
20
25
32
40
50
K
v
100 l/min
80
200
385
770
1100
1750
3400
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