Omega Products FSW-32A User Manual
INDUSTRIAL FLOW SWITCHES
From 0.12 to 70 GPM
Non-Magnetic–Ideal for Rusty Water
FSW-32A
U
Rugged Industrial Design
U
Switch Point Adjustable
Without Removing Unit
from Line
U
15 A SPDT Switch
Directly Controls Pump
U
Easy Screw Terminal
Wiring—No Soldering
U
NPT Threaded to Pipe
Directly In-Line
The FSW-30A flow switch is
supplied with 6 orifices to provide
6 overlapping flow ranges from
0.12 to 8.0 GPM for water. The
FSW-31A is supplied with 3 different
drag discs to provide 3 overlapping
ranges from 6 to 70 GPM for water.
The orifices and drag discs can
be changed while the switch is
in-line, but not while operating.
The FSW-32A operates over the
range of 4 to 8 GPM for water.
FSW-30A shown
with orifices
(6 included), slightly
smaller than actual size.
B
SPECIFICATIONS
Relay Switch: SPDT 15 A @ 125 or
250 Vac; 10,000,000 operations median
Sensitivity (% flow change required
to activate switch): 5% at upper end
of flow range, 25% at lower end of
flow range
Maximum Temperature/Pressure:
300 psig @ 82°C (180°F)
Minimum Temperature: 4°C (40°F)
Wetted Parts: Red brass,
316 SS, phosphor bronze, Noryl
EPDM (and PVC for Models FSW-31A,
32A). Other materials of construction:
Brass body, Noryl cover, stainless
steel and plastic hardware
Pressure Drop: FSW-30A: 1 to 5 psi;
FSW-31A, FSW-32A (4 to 8 GPM
range): 2 to 15 psi; all other ranges
less than 2 psi
Electrical Cable Fitting:
Water resistant for cable diameter
0.250" ±0.025"
Option “D” (dual SPDT relays):
Nominal Differential Flow Between
the Two Relay Actuation Points: 5%
Dimension: 1.43 H x 125.5 mm W
(5.63 x 4.94")
Weight: 1.59 kg (3.5 lb)
To Order Visit omega.com/fsw30 for Pricing and Details
Model No. Flow Range, GPM FNPT Connections
FSW-30A 0.12 to 8 ¹⁄₂
FSW-31A 6 to 70 1
FSW-32A 4 to 8 1
Comes complete with operator’s manual and orifices.
For flow switches supplied with 2 SPDT relays for DPDT action add suffix “-D” to model
number, for additional cost.
Ordering Examples: FSW-30A-D, flow switch with flow range of 0.12 to 8.0 GPM (water) and
2 SPDT relays.
FSW-31A, 1" flow switch for 6 to 70 GPM (water).
B-80
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