Manual TRV25

VG5000 Series_11 2009 5
10
8 6 4
3 2 1
100 80 60 40 30 20 1000 400 200
Pressure drop Δ
p
, in kPa (1 kPa = 10 mbar = 100 mmWK)
10
8
6
4
3
2
1
0,8
0,6
0,4
0,3
0,2
0,1
0,08
0,06
0,04
Fl
o
w
Q,
in m³
/
h
0,03
0,02
Kvs
0,4
0,25
2,5
5,5
1
1,45
1,6
5
3,5
4
½"
¾"
1"
3,2
0,63
Maintenance and Service
Description Code Number
Packing Nut with integral o-ring
VG5000-1
Valve Selection
The valve size for water applications can be defined
using the diagrams below, where the intersection of
the pressure drop over the completely open valve and
the flow has to stay within the white area.
Kv
s
selection diagram in SI units,
full seat