Flow-coefficient, Standard screens, Dimensions — weights – Watts 97FB-CIB User Manual
Page 2: Performance data
Flow-coefficient
The flow coefficient (Cv) is the number of gallons per minute
of water flowing through a given size restriction at a pressure
drop of one psi. To obtain the Cv factor for a given size
strainer, read capacity at intersection with the one (1)
psi pressure drop.
Conversions:
For gpm to lpm, multiply by 3.8
For psi to bar, multiply by .069
Standard Screens
SIze
OpeNINgS
StaNdard SCreeNS
in.
mm
in.
mm
2 - 3
50-80
0.045
1.143
3
⁄
64
" 304SS perf.
4 - 12
100-300
0.125
0.317
1
⁄
8
" 304SS perf.
in. mm
12 300
10 250
8
200
6
150
5
125
4
100
3
80
2
1
⁄
2
65
2
50
10000
1000
100
10
0.1
1
10
Liquid
Flow
(Water)
-
gpm
Strainer
Size
pressure drop - psi
Consult Watts for information and availability of flanged basket strainers
manufactured of cast bronze, cast or fabricated steel (UL/FM) and stainless steel.
Also available are threaded and socket weld
1
⁄
2
" - 2"(15-50mm) cast steel
basket strainers.
a
B
C
e
(Npt)
Inlet
Bolted Cover
d
remOvaL
SIze
dImeNSIONS
CLearaNCe
WeIghtS
A
B
C
D
E (NPT)
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
lbs.
kgs.
2
50
8
1
⁄
8
206
8
3
⁄
8
213
5
127
5
3
⁄
8
137
1
25
22
9.9
2
1
⁄
2
65
8
3
⁄
4
222
9
5
⁄
8
244
5
5
⁄
16
135
6
5
⁄
16
160
1
25
31
14.0
3
80
9
7
⁄
8
251
11
1
⁄
4
286
6
1
⁄
2
165
8
203
1
25
42
19.0
4
100
11
1
⁄
2
292
13
1
⁄
2
343
8
203
9
5
⁄
16
237
1
25
70
31.7
5
125
13
1
⁄
8
333
14
5
⁄
8
371
8
203
10
1
⁄
4
260
1
25
90
40.8
6
150
14
7
⁄
8
378
15
5
⁄
8
397
8
5
⁄
8
219
11
1
⁄
8
283
1
1
⁄
4
32
124
56.2
8
200
18
11
⁄
16
475
21
533
11
3
⁄
4
298
15
9
⁄
16
395
3
⁄
4
20
270
122.4
10
250
20
1
⁄
8
511
24
1
⁄
2
622
13
3
⁄
4
349
18
457
3
⁄
4
20
384
174.1
12
300
26
1
⁄
4
667
29
3
⁄
4
756
16
3
⁄
8
416
23
1
⁄
4
591
1
25
670
303.9
Dimensions — Weights
Dimensions shown are subject to change. Contact Watts for exact dimensions when required.
Performance Data
Table shows flows (gpm-water) at various pressure drops (psi)
using standard screens.
ES-97FB-CI 0934
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A Watts Water Technologies Company