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Float switches provide a low-cost solution for liquid level monitoring. Shock and vibration resistant, the float operates a reed switch via magnets as the liquid level moves the float. Various models offer compatibility with many liquids, temperature ranges, and system pressures.
Float Level Switches
Category Selection
Float level switches provide a low-cost general-purpose solution for single point monitoring of liquid level in a variety of applications. Designed for shock and vibration resistance, ProSense float level switches ensure long and trouble-free service.
- Available in several material constructions for compatibility with many liquid types
- Vertical and horizontal mounting styles offer flexible mounting with a variety of process connections
- Operating temperature ratings up to 482°F
- Suitable for a wide range of system pressure requirements
- Reed switches offer both AC and DC voltage ratings
- Most models are field configurable for N.O. or N.C. operation
For part listings and specifications, go to Shop Now
Vertical Top-Mount Float Level Switches
Newest Additions!
- More ProSense vertical top-mount float level switches
Vertical float switches are mounted at the top or bottom of a tank or vessel and have a float that rises or falls along the stem. Magnets within the float actuate a hermetically sealed reed switch as the float rises and lowers with liquid level.
- Float materials: Polypropylene, Buna-N, 316SS, Kynar, and PTFE
- Stem materials: Polypropylene, PBT, Brass, 316SS, Kynar and PFTE
- 3/8-16 UNC, 1/8" MNPT or 1/4" MNPT mounting threads
- Temperature ranges from -40°F to 482°F (depending on model)
- Pressure ratings up to 500 psig (depending on model)
- Made in the USA
Starting at
$13.00
(FLS-VM-100)
Vertical Suspendible / Submersible Float Level Switch
The FLS-VL-900 submersible liquid level switch is weighted for suspension in non-magnetic tanks and can be used in conjunction with a still pipe. Its materials are suitable for water, hydrocarbons, and certain chemicals.
- Buna-N float with brass stem
- PBT slosh shield for accurate sensing in turbulent conditions
- 20 ft. suspendible cable mounting
- -40°F to 221°F temperature range
- 50 psig max operating pressure
- Made in the USA
Starting at
$121.00
(FLS-VL-900)
55 Gallon Drum Float Level Switches
New!
These high- and/or low-level indication switches are specifically designed for standard 55-gallon drums and mount directly to standard 3/4" NPT bungs.
- Models in 316 stainless steel, or Buna-N float with brass stem
- Single- and dual-float models
- 72" lead wires
- Temperature ranges from -40°F to 302°F (depending on model)
- Pressure ratings up to 250 psig (depending on model)
- Made in the USA
Starting at
$100.00
(FLS-VD-100)
HVAC Condensate Line Float Level Switch
New!
The FLS-VM-800 float switch features a 3/4” PVC pipe fitting process connection and is ideal for use in HVAC condensate lines.
- Polypropylene float with PVC stem
- -40°F to 140°F operating temperature range
- 50 psig max operating pressure
- 24" lead wires
- Made in the USA
Starting at
$19.00
(FLS-VM-800)
Horizontal Side-Mount Float Level Switches
Newest Additions!
- More ProSense horizontal/side-mount float level switches
Horizontal/side-mounted float switches have a fixed housing which is passed through a hole on the side of a vessel or tank. They operate via a hinged float that rises and falls with the liquid level.
- Float materials: Polypropylene, PBT, 316SS, Kynar, Buna-N, and PFTE
- Stem materials: Polypropylene, PBT, 304SS, 316SS, Kynar, and Brass
- Available in a variety of mounting threads
- Temperature ranges from -40°F to 392°F (depending on model)
- Pressure ratings up to 300 psig (depending on model)
- Made in the USA
Starting at
$15.00
(FLS-HS-100)
Float Level Switch Kits
ProSense float level switch kits provide a convenient, field-customizable two-float level switch with a maximum stem length of 36 inches (914.4 mm). The kits are available in brass or 316 stainless steel constructions for compatibility with different liquids. Each kit contains two floats, a 2" NPT pipe plug, cuttable connecting tubes, and compression unions.
- Two SPST switches configurable for N.O. or N.C. operation
- Temperature ranges from -40°F to 392°F (depending on model)
- Pressure ratings up to 200 psig (depending on model)
- Made in the USA
Starting at
$240.00
(FLS-VK-200)
Float Level Tilt Switches
Float level tilt switches provide reliable level detection in open vessels, sumps, and ponds. These switches include a 7-meter cable, a weight, and an EPDM rubber float with a micro-switch that changes state as the float rises or falls +/- 45° from its nominal position.
- Mercury-free SPDT 16A switch output
- Long service life
- Resistant to solvents such as water, acids, alkalis, phosphate esters, ketones, and alcohols
- 32°F to 158°F operating temperature range
- 14.5 psig max operating pressure
Starting at
$39.50
(FLS-HT-100)
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