These stainless steel magnetic float balls are essential accessories for magnetic float level switches and liquid level sensors. They are widely used in:

• Water tanks, oil tanks, and fuel storage systems
• Industrial liquid level control (e.g., pumps, boilers, chemical processing)
• Wastewater treatment, sewage systems, and sump pumps
• Food & beverage, pharmaceutical, and corrosive liquid environments (especially 316 grade)
• High-temperature or high-pressure applications requiring reliable buoyancy and magnetic triggering of reed switches Suitable for detecting and controlling liquid levels in open or pressurized containers with media such as water, oil, acids/alkalis (with proper material selection), and other non-ferromagnetic liquids.

Recommended minimum liquid density: ≈0.9 g/cm³ (or higher) for optimal floating performance. Not ideal for densities below 0.85 g/cm³.

The stainless steel magnetic float ball is a core component used in liquid level switches and sensors, designed to provide reliable and accurate level detection in a wide range of industrial and commercial applications.

Manufactured from high-quality stainless steel, the float ball offers excellent corrosion resistance, mechanical strength, and long-term durability, making it suitable for use in water, oil, and chemical media. The built-in magnetic element enables precise actuation of reed switches as the liquid level rises or falls, ensuring stable and repeatable switching performance.

With a simple yet highly effective design, the float moves freely along the liquid surface, triggering electrical signals without direct electrical contact with the medium. This non-contact magnetic operation enhances safety, prevents leakage, and allows reliable use even in harsh environments such as high temperature, pressure, or corrosive conditions.

The float ball is compatible with various float level switches and can be widely used in water tanks, sumps, pipelines, and liquid control systems. It plays a key role in applications such as pump control, level monitoring, overflow protection, and automated fluid management.

Designed for easy installation and long service life, this magnetic float ball is an essential accessory for ensuring stable and efficient liquid level control in industrial systems.

Key benefits include:

• High-Quality Materials — 304 or 316 stainless steel construction for excellent anti-rust and anti-corrosion performance
• Built-in Strong Magnet — Ensures precise and reliable triggering of magnetic reed switches in level sensors
• High Temperature Resistance — Suitable for elevated temperature liquids (exact rating depends on switch assembly)
• Two Shape Options — Cylindrical for compact installations; Spherical for better buoyancy and stability in turbulent conditions
• Multiple Sizes Available — Wide range to fit various tank openings, stem diameters, and application needs
• Customizable — Special dimensions, tolerances, or non-magnetic variants (e.g., ESB-20020027 without magnet) available upon request
• Durable & Low Maintenance — Resistant to deformation, long service life in industrial environments
• Hot-Selling Models — Popular sizes like ESB-38269.5 and ESB-403515 for versatile compatibility

Compatible Media

• Water, oils, fuels, mild chemicals, wastewater
• Avoid media with ferromagnetic particles (e.g., iron filings) that may stick to the magnet

Operating Principle The float contains a permanent magnet. As the liquid level changes, the float moves along a guide tube/stem, causing the internal magnet to activate (close/open) a reed switch at set points for level detection/control.

Customization Available for non-standard sizes, different hole diameters, wall thickness, magnet strength, or special finishes. Contact support for bulk orders, samples, or drawings.

This float ball is a key component — pair it with compatible magnetic reed level switches for complete liquid level monitoring solutions.