Flow rates, Dimensions – Watts FS10-C User Manual
Page 2
Flow Rates
FLOW RATES Required to Actuate the No. FS10C or FS20
Flow Switch in Horizontal Pipe. Flow rates in U.S. gallons per
minute (GPM). Velocity in feet per second (FPS). *Equipped
with extended paddle trimmed to pipe size.
3
1
⁄
16
"
(78mm)
3
1
⁄
4
"
(83mm)
1
7
⁄
8
"
(48mm)
3
1
⁄
2
"
(89mm)
3
1
⁄
16
"
(78mm)
7
⁄
8
"
(22mm)
1
7
⁄
8
" (48mm)
HEX
7
⁄
8
" (22mm)
Dia. Electrical
Knock-outs
1" (25mm)
Pipe Thread
1
1
⁄
2
” (40mm)
Dimensions
ES-FS10C 0921
© 2009 Watts
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
A Watts Water Technologies Company
PIPE SIZE IN WHICH
FLOW SWITCH INSTALLED
1"
(25mm)
1
1
⁄
4
"
(32mm)
1
1
⁄
2
"
(40mm)
2"
(50mm)
2
1
⁄
2
"
(65mm)
3"
(80mm)
*4"
(100mm)
*5"
(125mm)
*6"
(150mm)
FACTORY OR
MINIMUM
FLOW SETTING
ACTIVATION
FLOW
GPM
5.2
7.9
10.0
13.2
20.9
30.0
39.0
58.0
79.0
FPS
2.01
1.74
1.62
1.29
.92
1.30
1.0
.94
.88
DEACTIVATION
NO FLOW
GPM
2.0
3.2
5.3
8.1
9.9
12.0
19.0
29.0
39.6
FPS
.77
.71
.86
.79
.44
.52
.50
.47
.44
MAXIMUM
FLOW SETTING
ACTIVATION
FLOW
GPM
11.5
18.0
18.0
34.1
53.9
52.0
73.5
115.0
166.0
FPS
4.44
3.98
2.91
3.33
2.38
2.26
1.86
1.85
1.84
DEACTIVATION
NO FLOW
GPM
8.5
14.6
15.1
29.2
44.4
46.1
64.0
92.0
123.0
FPS
3.28
3.23
2.44
2.85
1.96
2.00
1.67
1.48
1.37
*Flow rates for these sizes are calculated.
3
⁄
4
"
(20mm)