Curva caratteristica relativa al grado di apertura della valvola
30
V (l/h)
V (l/h)
1
0
0
0
9
0
0
8
0
0
7
0
0
6
0
0
5
0
0
4
0
0
0
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
1
0
0
G
r
a
d
o
d
i
a
p
e
r
t
u
r
a
(
%
)
1
0
.
5
1
0
D
N
2
5
c
o
n
d
P
=
1
0
0
0
m
b
a
r
9
.
5
D
N
2
0
c
o
n
d
P
=
1
0
0
0
m
b
a
r
D
N
2
5
c
o
n
d
P
=
4
0
0
m
b
a
r
1
.
0
9
D
N
2
0
c
o
n
d
P
=
4
0
0
m
b
a
r
0
.
9
3
0
0
0
.
3
1
0
5
0
0
1
0
0
0
0
9
5
0
0
9
0
0
0
8
5
0
0
7
5
0
0
8
0
0
0
1
0
5
0
0
1
0
.
5
1
0
0
0
0
1
0
1
0
.
5
1
0
9
.
5
9
8
.
5
8
7
.
5
7
0
0
0
9
5
0
0
9
.
5
7
9
0
0
0
9
6
5
0
0
8
5
0
0
8
.
5
6
.
5
6
0
0
0
8
0
0
0
8
6
5
5
0
0
7
0
0
0
7
5
0
0
7
.
5
7
5
.
5
5
0
0
0
6
0
0
0
6
6
5
0
0
6
.
5
5
4
5
0
0
5
5
0
0
5
.
5
4
.
5
4
0
0
0
5
0
0
0
5
4
5
0
0
4
.
5
4
3
5
0
0
4
0
0
0
3
5
0
0
3
.
5
4
3
.
5
3
0
0
0
3
0
0
0
3
3
2
5
0
0
2
5
0
0
2
.
5
2
.
5
2
0
0
0
2
2
0
0
0
1
5
0
0
1
5
0
0
1
0
0
0
1
5
0
0
0
.
5
1
.
5
2
1
0
0
0
0
1
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
1
0
0
1
.
5
5
0
0
0
.
5
8
.
5
8
7
.
5
7
6
.
5
6
5
.
5
5
D
N
1
5
c
o
n
d
P
=
1
0
0
0
m
b
a
r
D
N
1
5
c
o
n
d
P
=
4
0
0
m
b
a
r
0
.
8
0
.
7
0
.
6
0
.
5
0
.
4
4
.
5
V
(
l
/
h
)
V
(
l
/
h
)
V
(
l
/
h
)
V
(
m
3
/
h
)
V
(
m
3
/
h
)
V
(
m
3
/
h
)
2
5
0
0
2
.
5
1
5
0
0
1
.
5
1
0
0
0
1
0
0
0
1
1
2
0
2
0
0
0
2
5
0
0
0
5
0
0
0
.
5
0
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
0
9
0
1
0
0
1
0
0
0
1
.
0
9
0
0
0
.
9
8
0
0
0
.
8
7
0
0
0
.
7
6
0
0
0
.
6
5
0
0
0
.
5
4
0
0
0
.
4
3
0
0
0
.
3
2
0
0
0
.
2
1
0
0
0
.
1
0
0
5
1
0
1
5
2
0
2
5
3
0
1
0
.
5
1
0
9
.
5
9
8
.
5
8
7
.
5
7
6
.
5
6
5
.
5
5
4
.
5
4
3
.
5
3
2
.
5
2
1
.
5
1
0
.
5
6
0
7
0
8
0
9
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
1
0
5
0
0
1
0
0
0
0
9
5
0
0
9
0
0
0
8
5
0
0
8
0
0
0
7
5
0
0
7
0
0
0
6
5
0
0
6
0
0
0
5
5
0
0
5
0
0
0
4
5
0
0
4
0
0
0
3
5
0
0
3
0
0
0
2
5
0
0
2
0
0
0
1
5
0
0
1
0
0
0
5
0
0
0
0
1
0
V (m3/h)
V
(
m
3
/
h
)
V (m3/h)
V (l/h)
1
0
0
0
1
.
0
9
0
0
0
.
9
8
0
0
0
.
8
7
0
0
0
.
7
6
0
0
0
.
6
5
0
0
0
.
5
4
0
0
0
.
4
3
0
0
0
.
3
2
0
0
0
.
2
1
0
0
0
.
1
0
0
5
1
0
1
5
2
0
2
5
3
0
G
r
a
d
o
d
i
a
p
e
r
t
u
r
a
(
%
)
1
9
8
7
6
5
4
3
2
1
V
(
l
/
h
)
V
(
m
3
/
h
)