KROHNE DA Flap-type EN User Manual
Page 7
3 Flow
table
Reference conditions: Water
at 20°C
The turn-down range amounts to 10 : 1
The specified pressure losses apply for water and air at the maximum flow rate.
Nominal size
Flow Water
DN Inch
m3/h
US
GPH
25
1
6 - 12
1585 - 3170
32
1 1/4"
8 - 15
2113 - 3962
40
1 1/2"
6 - 25
1585 - 6604
50
2"
5 - 30
1320 - 7925
65
2 1/2"
20 - 80
5283 - 21133
80
3"
40 - 80
10566 - 21133
100
4"
40 - 120
10566 - 31700
125
5"
65 - 150
17171 - 39625
150
6"
80 - 225
21133 - 59438
200
8"
150 - 350
39625 - 92460
250
10"
150 - 350
39625 - 92460
300
12"
250 - 750
66043 - 198129
4 Materials
Ring
Corrosion protection for steel version
Steel
Stainless steel 1.4571
PVC
(up to DN300)
PP
(up to DN300)
PVDF
(up to DN300)
Epoxy, stove enamelled, colour: blue, RAL 5017
Scale casing
Aluminium, painted
Pointer
Aluminium, painted
Scale
Aluminium, coated
Pane
Float glass