Product Line
Float Switches & Liquid Level Sensors
Multi-directional, standard, or fully custom liquid level sensors and float switches. Available in vertical, horizontal, multi-level, and submersible configurations in stainless steel and a wide range of plastic materials. Custom molded OEM designs at production quantities with short lead times.
Featured Product
Vertical Float Switch
Custom Liquid Level Sensor
SMD Fluid Controls produces float switches and liquid level sensors to OEM specifications across a wide range of industries. Standard designs are available for immediate delivery. Custom designs can be produced in virtually any configuration — material selection includes stainless steel (303, 304, 316L), polypropylene, PVDF, Kynar, nylon, and other engineering plastics. Combination level and temperature sensors available.
Styles
Vertical · Horizontal · Multi-level
Materials
Stainless Steel · PVDF · PP · Nylon
Options
Submersible · Level + Temp combo
Markets
Industrial · Marine · HVAC · Food
Industries Served
Where our float switches are used
Industrial & HVAC
Tank level control, cooling systems, boiler level
Marine & Water Treatment
Bilge pumps, freshwater tanks, wastewater treatment
Food & Beverage
Ingredient tanks, CIP systems, dispensing equipment
Oil & Gas
Fuel storage, oil separators, offshore equipment
Sump & Drainage
Sump pump control, underground tanks, sewage
Process & Automation
Process vessels, multi-stage pump control
Chemical Processing
Corrosive chemical tanks, reagent vessels
Medical & Lab
Reagent reservoir, waste vessels, lab equipment
Choosing the Right Sensor
Which float switch is right for your application?
Mounting orientation, number of switch points, and environment drive most float switch selection decisions. Contact our engineering team for custom OEM configurations.
If you need
Top or bottom tank mounting
Start with
Vertical Float Switch
Activates as level rises or falls past the set point. Single or multi-level, stainless or plastic.
If you need
Side-mount or restricted vertical space
Start with
Horizontal Float Switch
Float swings horizontally on level change. Compact profile for tight installations.
If you need
Multiple switch points in one assembly
Start with
Multi-Level Sensor
2, 3, or 4 switch points in one cable assembly. Eliminates multiple sensor installations.
If you need
Continuous immersion or submersible installation
Start with
Submersible Float Switch
IP68 sealed for continuous immersion in sumps, underground tanks, and sewage systems.
Float Switch & Level Sensor Models
| Model / Family | Orientation | Technology | Key Specs | Applications | ||
|---|---|---|---|---|---|---|
 | FH — Horizontal Float Switches | Horizontal / Side-mount | Magnetic reed switch | Compact profile, stainless and engineering plastics, single switch point, custom cable lengths | Sump pumps, reservoirs, chemical tanks, food processing, space-limited installations | View Product |
 | FS — Vertical Float Switches | Vertical / Top or bottom mount | Magnetic reed switch | Single or multi-level, stainless steel (303/304/316L) and plastics (PP, PVDF, Kynar, Nylon), SPST/SPDT, custom cable | Tank high/low alarm, sump pump control, HVAC, industrial tanks, boiler level | View Product |
 | FL50 — Ultrasonic Liquid Level Sensor | Top-mount, non-contact | Ultrasonic point level | Models: FL50-NY01, FL50-PP01. Dimensions: 2.48 × 0.68 × 2.48 in. Weight: 0.29 lbs. Price from $185 (1–9 units), $175.75 (10+) | Non-contact point level sensing for tanks, vessels, reservoirs, industrial & medical | View Product |
 | FM — Multi-Level Float Switches | Vertical, multi-point | Multiple reed switches on single stem | 2, 3, or 4 switch points in one cable assembly, configurable spacing, fully custom OEM design | Boiler level control, multi-stage pump control, industrial process, water treatment | View Product |
| Level + Temperature Combo | Vertical | Reed switch + NTC/PT100 | Level and temperature sensing in one unit, NTC or PT100 thermistor, reduces installation cost and hardware count | HVAC cooling circuits, engine coolant, industrial process tanks, food & beverage | View Product |
 | Custom Level Sensors | Any configuration | Custom OEM | Material: SS 303/304/316L, PP, PVDF, Kynar, Nylon. Any float size, stem length, switching temp, cable, connector | Any OEM application — submersible, marine, aggressive chemicals, extreme temperatures | View Product |