12
Know-how makes the difference
B-3500-UK-06-2013-REV. A
An
Company
Normally Open, Enter Above Seat
Size Thread end Orifice
Kv
(m3/h)
Actuator
(mm)
ΔP
(Bar)
Control Pressure
(Bar)
DN10
3/8”
13
3.8
50
0 - 16
≥ 3.0
DN15
1/2”
13
4.7
50
0 - 16
≥ 3.0
DN20
3/4”
18
9.5
50
0 - 12
≥ 3.0
DN25
1”
24
18.1
63
0 - 16
≥ 4.5
DN32
1 1/4”
31
23.1
63
0 - 14
≥ 4.5
DN40
1 1/2”
35
32.9
63
0 - 14
≥ 4.5
DN50
2”
45
52.8
63
0 - 6
≥ 4.5
Suitable for long time valve open demand. Taking off the silencer, the valve can be
changed to a double acting normally open type.
Open
Silencer
Closed
Silencer
DN15
8
6
4
2
12
16
8
4
Bar
0
50
DN10
Control
pressure
Fluid
pressure
Normally open, Enter Above Seat
Bar
DN20
8
6
4
2
12
16
8
4
0
50
DN40
8
6
4
2
12 14 16
8
4
Bar
0
DN32
63
Control
pressure
Fluid
pressure
8
6
4
2
12
16
8
4 6
0
63
DN50
Bar
8
6
4
2
12
16
8
4
0
DN25
63
Values mentioned in the chart are minimum ratings for the control pres-
sure at a given differential pressure - values at or above these ratings
will make the valve close if NO - or open if NC types.
