Capacity – Watts 757NDCDA User Manual
Page 3
Capacity
Series 757DCDA, 757NDCDA flow curves as tested by Underwriters Laboratory per UL 1469, 1996.
Flow characteristics collected using butterfly shutoff valves
* = Rated flow ** = UL Rated flow
Horizontal
Vertical
N - Pattern
kPa psi
96 14
83 12
69 10
55
8
41
6
28
4
14
2
0 0
0 50 100 150 200 250 300 350
gpm
0 190 380 570 760 950 1140
1330
lpm
7.5 15
fps
2.3 4.6
mps
kPa psi
83 12
69 10
55
8
41
6
28
4
14
2
0 0
kPa psi
83 12
69 10
55
8
41
6
28
4
14
2
0 0
0
100
200
300
400
500 gpm
0
380
760
1140
1520
1900 lpm
7.5 15
fps
2.3 4.6 mps
2
1
⁄
2
" (65mm)
3" (80mm)
**
*
0
300
600
900
1200
1500 gpm
0
1140
2280
3420
4560
5700 lpm
7.5
15 fps
2.3
4.6 mps
6" (150mm)
0
100
200
300
400
500
600
700
800 gpm
0
380
760 1140 1520 1900 2280 2660 3040 lpm
7.5 15
fps
2.3 4.6
mps
4" (100mm)
kPa psi
83 12
69 10
55
8
41
6
28
4
14
2
0 0
0
500 1000 1500 2000 2500 3000
3500
gpm
0 1900 3800 5700 7600 9500 11400 13300 lpm
7.5
fps
2.3
mps
10" (250mm)
**
**
**
**
kPa psi
83 12
69 10
55
8
41
6
28
4
14
2
0 0
0
500
1000
1500
2000
2500 gpm
0
1900
3800
5700
7600
9500 lpm
7.5
15 fps
2.3
4.6 mps
8" (200mm)
**
*
*
*
*
*
kPa psi
165 24
138 20
110 16
83 12
55
8
28
4
0 0
N
V
H
H
N
V
N
V
H
N
V
H
N
H
V
N
H
V