KROHNE DA Flap-type EN - 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