Float Switches

  • Quick Deliveries
  • Unlimited Lengths
  • Brass, Stainless, Teflon, PVC, Buna, Nylon, Kynar Polypropylene
Float Switches Float switches are used to trip high/low level alarms, engage relays, control or start/stop pumps, open/close valves etc. They are a simple, inexpensive way to provide independent or redundant setpoints for emergency shut-down or backup.

Float Switch Specifications

Accuracy/Repeatability+/- 0.1 inch; 0.030 inch
Switch TypeSingle and Multi-Point Magnetically Actuated Reed: SPST N.O. or N.C. (std.); Optional SPDT
Wattage50W (std); 100W & Higher Optional (Consult Factory)
Mountings1/8" thru 2" NPT or ANSI Flanged; Top, Side (Horizontal or 90º EL) or Bottom; Adjustable Location Optional
Electrical ConnectionConduit Connection 1/2" NPT with Pig-tail Leads (std.)
Maximum LengthUnlimited
Stem/Float MaterialsPlated Brass, Stainless Steel 316, Buna, PVC, Polypropylene, Nylon, Teflon, Kynar
Wiring22 AWG SPST; SPDT with Individual or Common Lead Wiring; Color Coded, as Applicable
Voltages0 to 240 VAC/DC
TemperatureTo 300F* (Up to 550F Optional)
PressureTo 900 PSI*
Minimum S.G.From 0.30*
EnclosuresGeneral Purpose, Weatherproof, Watertight, Explosion Proof
Intrinsically SafeOptional - Requires Barrier (Consult Factory)
Other OptionsCombination Float & Temperature Switch (Up to 100º in 5º increments +/- 3ºC)
Slosh Shield
*Limitations Vary Depending on Materials, Temperature and Pressure.

Float Switches Diagram Float switches are often furnished with Level Alert Alarm Systems to provide an audible, visual and relay output response to high/low and other alarm conditions. These microprocessor based alarm systems are expandable and may be activated by: Continuity, AC or DC Voltages, and Current Loops. (See Uehling Bulletin 492P98).

Level Alert Alarm Systems may be optionally provided in convenient factory-assembled NEMA 12 Oil Tight, NEMA 4X Watertight and NEMA 7 Explosion Proof enclosures.
Bulletin FL498


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