Flow-coefficient, Dimensions — weights, Performance data – Watts 77F-BI User Manual
Page 2: Standard screens
ES-77F-BI 1003
© 2010 Watts
Flow-coefficient:
The flow coefficient (C
v
) 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 C
v
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
in. mm
8 200
6 150
5 125
4 100
3
80
2
1
⁄
2
65
2
1
⁄
4
57
2
50
4000
1000
100
10
Flow
(water)
-
gpm
Strainer
Size
Pressure Drop - psi
0
1
10
Inlet
A
B
C
NPT
Dimensions — Weights
SIze
DImeNSIoNS
weIghT
A
B
C (NPT)
in.
mm
in.
mm
in.
mm
in.
mm
lbs.
kgs.
2
50
8
5
⁄
8
219
5
1
⁄
4
133
1
⁄
2
15
20
9.0
2
1
⁄
2
65
10
1
⁄
4
260
7
178
3
⁄
4
20
32
14.5
3
80
11
5
⁄
8
295
7
11
⁄
16
195
1
25
36
16.3
4
100
14
3
⁄
8
365
9
1
⁄
8
232
1
1
⁄
2
40
61
27.6
6
150
18
5
⁄
8
473
13
330
2
50
160
72.5
8
200
24
3
⁄
8
619
15
5
⁄
16
389
2
50
210
95.2
Dimensions shown are subject to change. Contact Watts for exact dimensions
Performance Data
Table shows flow rates (gpm-water) through 77F-BI at various
pressure drops (psi) using standard screens.
Standard Screens
SIze
oPeNINgS
STANDArD SCreeNS
in.
mm
in.
mm
2 - 3
50-80
0.045
1.143
3
⁄
64
304SS perf.
4 - 8
100-200
0.125
0.317
1
⁄
8
304SS perf.
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Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
A Watts Water Technologies Company