Watts FS10-F - Manual (Page 2)

Flow Rates
Flow rates required to actuate No. FS10-F 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.
To be in compliance with ANSI/UL 346 the units are standardly
set and sealed at the factory to operate between
4 and 10 GPM – FPS .648 and 1.62.
Dimensions Location
Paddle must be free to move. Waterflow indicator can be
installed in a reducing tee, standard tee or welded fitting.
It should be installed in horizontal or vertical section of a pipe
where there is a straight run of at least 5 pipe diameters on
each side.
FLOW
3 1 ⁄
16
”
(78mm)
3 1 ⁄
16
”
(78mm)
3 1 ⁄
4
”
(83mm)
1 7 ⁄
8
” (48mm)
2 1 ⁄
8
”
(54mm)
7 ⁄
8
”
(22mm)
1 7 ⁄
8
”
(48mm)
HEX
7 ⁄
8
” (22mm)
Dia. Electrical
Knock-outs
1” (25mm)
Pipe Thread
3 ⁄
4
” (20mm)
1 1 ⁄
2
”
ES-FS10-F 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