Manual VLSP

VLSP
13
EN
Setting
1. Turn the setting wheel to desired value, e.g. 5.0.
Sizing
1. Choose the smallest valve size that can
obtain the design flow with some safety
margin, see “q
max
values”. The setting
should be as open as possible.
2. Check that the available DpV is within the
working range 15-400 kPa or 23-400 kPa.
Measuring accuracy
Maximum flow deviation at different settings.
*) Setting (%) of fully open valve.
Shut-off
1. Turn the setting wheel clockwise to X.
0
2
4
6
8
10
12
14
16
18
20
22
24
02040608
0100
[%] *
± %
10 30 50 70 90
q
max
values
1 2 3 4 5 6 7 8 9 10
DN15LF 44 71 97 123 148 170 190 210 227 245
DN15 88 150 200 248 295 340 380 420 450 470
DN20 210 335 460 575 680 780 890 990 1080 11 5 0
DN25 370 610 830 1050 1270 1490 1720 1870 2050 2150
DN32 800 1220 1620 2060 2450 2790 3080 3350 3550 3700
Position
q
max
= l/h at each setting and fully open valve plug.
LF = Low flow