Data Sheet for Product

4
Siemens
N4211en
Smart Infrastructure
2021-12-13
Ball valve characteristic curve
Through-port
Flow rate k
v
/ k
vs
0,8
0,6
0,4
0,2
0
1
0 20 40 60 80 90°
4211D03a
Rotational angle
Flow characteristics
0…100 %
-> A ─ AB equal percentage, n
gl
= 3.9 per VDI / VDE 2173
3-port
Flow rate k
v
/ k
vs
0,8
0,6
0,4
0,2
0
1
0 20 40 60 80 90°
4211D02a
Rotational angle
Through-port
0…100 %
-> A ─ AB equal percentage, n
gl
= 3.9 per VDI / VDE 2173
Bypass
0…100 %
-> B ─ AB linear, k
vs
greater than 70 % of A ─ AB