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Mini Plastic Flow Switches

FSW-120 Series

Flow Switch | Plastic | Mini
 | FSW-120 Series

Flow Switch | Plastic | Mini

£81.00 FSW-122

  • Small and Lightweight
  • Plastic and Stainless Steel Construction
  • No Switch-Point Adjustment
Variable Area Flowmeters, Rotameters & Switches - View related products


The FSW-120 Series of compact PPS switches are ideal for use where space is at a premium. Designed for use with water and water based solutions, these switches are suitable for high volume OEM applications. They are ideal for coolant or chemical monitoring in portable equipment and many other applications with space constraints. The switch points are based on water flow, other liquids may require field testing.

Wetted Materials:
    Housing and piston PPS Spring 316 stainless steel O-Ring FKM Other wetted parts epoxy
Maximum Pressure: 17.2 bar (250 psig) at 21°C (70°F)
Operating Temperature: -17 to 107°C (0 to 225°F)
Set Point Accuracy: ±15% maximum
Set Point Differential: 20% maximum
Relay: SPDT 20 VA
Inlet/Outlet Ports: 9/16" -18 UNF-2B thread (NPT adaptors available)
Recommended Filtration: 50 Microns or better
Electrical Termination: 18 AWG, 60 cm long cable
Weight: 140 g
Place Order(Specify Model Number)
Part Number/ Desc.
FSW-121 Star
Availability: 9 weeks
Plastic flow switch 0.38 LPM switch point
FSW-122 Star
Availability: 9 weeks
Plastic flow switch 0.95 LPM switch point
FSW-123 Star
Availability: 1 week
Plastic flow switch 1.9 LPM switch point
FSW-124 Star
Availability: 4 weeks
Plastic flow switch 2.8 LPM switch point
FSW-125 Star
Availability: 1 week
Plastic flow switch 3.8 LPM switch point
FSW-126 Star
Availability: 1 week
Plastic flow switch 5.7 LPM switch point
FSW-120-18 Star
Availability: 9 weeks
9/16"-18 UNF to ¹/8 NPT adaptor
FSW-120-14 Star
Availability: 6 weeks
9/16"-18 UNF to ¹/4 NPT adaptor
All amounts shown in EUR, GBP, or USD
Note: Comes complete with operator’s manual.

Notes: Flow settings are calibrated using water at 21°C on increasing flow, with units in a vertical position. Care should be taken to ensure fluid compatibility with the above listed wetted materials.