
Float Balls with Custom Threads & Fittings
- Customizable threads and fittings available
- 304/316 stainless steel construction
- Pressure-tested for reliable performance
Pressure-Tested Quality Assurance
Marine-Grade Stainless Steel Standards
Electro-magnetic bilge pump float switches use stainless steel float balls with integrated magnets to trigger precise liquid level activation in bilge pumps, sump systems, and industrial tanks. Constructed from durable 304/316 stainless steel, these switches offer custom sizing, threads, and pressure-tested reliability for demanding marine and industrial environments.




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An electro-magnetic float switch uses a magnet embedded inside a stainless steel float ball that rises and falls with liquid level. As the float moves, the internal magnet aligns with a corresponding reed switch or sensor outside the float chamber, triggering an electrical signal that activates or deactivates the bilge pump, alarm, or control system without direct electrical contact with the liquid.
Talk to our experts for custom solutions and tailored guidance.

Magnetic float balls trigger bilge and sump pump activation for reliable liquid level control aboard vessels and equipment.

Provides accurate level monitoring and pump activation in treatment tanks across municipal and industrial wastewater facilities.

Safely monitors corrosive liquid levels in chemical storage and processing tanks using corrosion-resistant stainless floats.

Monitors liquid levels in tanks and vats containing oils, syrups, and process liquids for consistent production control.
Talk to our experts for custom solutions and tailored guidance.
Over two decades of experience engineering reliable stainless steel float balls and magnetic switch components for demanding applications.
Precision magnet installation inside float balls for accurate, repeatable switch activation in bilge pumps and level control systems.
Large stock of common sizes plus custom configurations, ensuring fast turnaround and reliable worldwide delivery.
Share your tank dimensions and switching requirements — we'll respond quickly with sizing, material, and pricing recommendations.
For immediate assistance, feel free to give us a direct call at (416) 805-8132. You can also send us a quick email at richard@castingtechnologies.com.
For immediate assistance, feel free to give us a direct call at (416) 805-8132. You can also send us a quick email at richard@castingtechnologies.com.