The FL-W Series of water flow monitors can be used with flows from 1 gph up to 90 gpm.
These flowmeters utilize the fluid’s movement to actuate a swinging vane (or piston),
which drives the scale pointer and triggers the signal switch.
SPECIFICATIONS: Signal Switch: 3-Wire SPDT, 15 A @ 125 Vac Wetted Parts: 300 Series SS, and Polysulfone and Brass Seals: EPR Brass (vane models), PTFE (piston models) Pressure Drop: 2.2 psi (vane), 2 to 5 psi (piston) Deadband: 7% of max. flow
Model No.
Flow Rate (GPM)
Display Increments
Port Size
Design Type
FL-W01
0 to 1
0.2 GPM
3/4 FNPT
Piston
FL-W02
0 to 2
0.25 GPM
3/4 FNPT
Piston
FL-W05
0 to 5
1 GPM
3/4 FNPT
Piston
FL-W10
0 to 10
2 GPM
3/4 FNPT
Piston
FL-W15
0 to 15
3 GPM
3/4 FNPT
Piston
FL-W20
0 to 20
4 GPM
3/4 FNPT
Piston
FL-W30
0 to 30
5 GPM
1-1/2 FNPT
Vane
FL-W40
0 to 40
5 GPM
1-1/2 FNPT
Vane
FL-W50
0 to 50
10 GPM
1-1/2 FNPT
Vane
FL-W60
0 to 60
10 GPM
1-1/2 FNPT
Vane
FL-W70
0 to 70
10 GPM
2 FNPT
Vane
FL-W80
10 to 80
10 GPM
2 FNPT
Vane
FL-W90
20 to 90
10 GPM
2 FNPT
Vane
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† All dollar amounts on this site are shown in US currency.