Capacity – Watts LF909 User Manual
Page 3
*
SIZE (DN)
DIMENSIONS
WEIghT
A
As
B C D E Es L P
QT QT-S
in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs. lbs.
kgs.
3
⁄
4
" 14
3
⁄
8
365 18
1
⁄
16
459 8
3
⁄
4
222 4 102 4
3
⁄
4
121 6
3
⁄
4
171 10
3
⁄
16
259 7
5
⁄
16
186 3
7
⁄
8
98 14 6.4 15.6 7.1
1" 15
3
⁄
8
391 19
5
⁄
8
498 8
3
⁄
4
222 4 102 4
3
⁄
4
121 7 178 11 279 7
5
⁄
16
186 3
7
⁄
8
98 15 6.8 17.5 7.9
1
1
⁄
4
"M1 18
1
⁄
2
470 23
7
⁄
16
595 11
5
⁄
8
295 5
1
⁄
2
140 6
1
⁄
2
165 7
1
⁄
2
191 12
3
⁄
16
310 10
3
⁄
8
264 5
1
⁄
4
133 40 18.1 42.8 19.4
1
1
⁄
2
"M1 19 483 24
3
⁄
8
619 11
5
⁄
8
295 5
1
⁄
2
140 6
1
⁄
2
165 7
1
⁄
2
191 12
5
⁄
8
321 10
3
⁄
8
264 5
1
⁄
4
133 40 18.1 44.0 20.0
2"M1 19
1
⁄
2
495 25
15
⁄
16
659 11
5
⁄
8
295 5
1
⁄
2
140 6
1
⁄
2
165 7
3
⁄
4
197 13
15
⁄
16
354 10
3
⁄
8
264 5
1
⁄
4
133 40 18.1 47.4 21.5
Subscript ‘S’ = strainer model
Capacity
As compiled from documented Foundation for Cross-Connection Control and Hydraulic Research of the University of Southern
California lab tests.
◊Typical maximum system flow rate (7.5 feet/sec.)
kPa psi
110
16
83
12
55
8
28
4
0 5 10 15 20 25 30 35
gpm
0 19 38 57 76 95 114
133
lpm
5
7.5 10
15
20 fps
1.5
2.3 3.0
4.6
6.1 mps
*
0
5 10 15 20 25 30 35 40 45 50 55 60
gpm
0
19 38
57 76
95 114 133 152 171 190 209 228
lpm
5
7.5 10
15
20
fps
1.5 2.3 3.0
4.6
6.1
mps
*
0 10 20 30 40 50 60 70 80 90 100
gpm
0 38 76 114 152 190 228 266 304 342 380
lpm
5 7.5 10
15
20
fps
1.5 2.3 3.0
4.6
6.1
mps
*
0 10 20 30 40 50 60 70 80 90
100
gpm
0 38 76 114 152 190 228 266 304 342 380
lpm
5 7.5 10
15
fps
1.5 2.3 3.0
4.6
mps
3
⁄
4
" (20mm)
1" (25mm)
1
1
⁄
4
" (32mm)
1
1
⁄
2
" (40mm)
kPa psi
138 20
103 15
69 10
35 5
kPa psi
138 20
103 15
69 10
35 5
kPa psi
138 20
103 15
69 10
35 5
*
0
25
50
75
100
125
150 175 200 gpm
95 190 285 380 475 570 665 760
lpm
5 7.5 10
15
fps
1.5 2.3 3.0
4.6
mps
2" (50mm)
kPa psi
138 20
103
15
69 10
35
5
LF909QT, LF909QT-S
◊
◊
◊
◊
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