Stainless Steel Double Ball Float Switch | Water Level Sensor
Stainless Steel Double Ball Float Switch | Water Level Sensor
Stainless Steel Double Ball Float Switch – Liquid Water Level Sensor for Tanks & Pools
Keep your tanks, pools, and reservoirs running at the perfect level with this reliable 304 stainless steel double ball float switch. Designed for durability and precision, this water level sensor automatically detects liquid levels and triggers connected pumps or control systems — making it ideal for water tanks, sump pits, pool systems, irrigation setups, and industrial fluid management.
Key Features
- Premium 304 Stainless Steel Construction — Corrosion-resistant and built to last in wet, humid, or mildly corrosive environments.
- Double Ball Design — Two float balls provide enhanced accuracy and reliable level detection, reducing false triggers.
- Wide Temperature Range — Operates effectively from 40°C to 125°C, suitable for both cold-water storage and hot-water systems.
- High Voltage Tolerance — Breakdown voltage of 450V DC (min) and switching voltage of 220V, making it compatible with a wide range of electrical setups.
- CE Certified — Meets European safety and quality standards for electrical components.
- Versatile Application — Perfect for water tanks, swimming pools, aquariums, sump systems, agricultural irrigation, and industrial liquid control.
- Easy DIY Installation — Straightforward wiring and mounting make it a great choice for both professional installers and DIY enthusiasts.
Technical Specifications
- Main Material: 304 Stainless Steel
- Switching Voltage: 220V
- Breakdown Voltage: 450V DC (min)
- Breakdown Current: 1.5A DC (min)
- Resistance Value: 0.1Ω (min)
- Working Temperature: 40°C – 125°C
- Medium Specific Gravity: 0.7 g/cm³
- Working Pressure: < 1.0 MPa
- Electric Load Capacity: 200W (100–265V AC)
- Certification: CE
- Battery Required: No
- Country of Origin: Made in China
How It Works
The float switch uses buoyancy to detect liquid levels. As the liquid rises or falls, the float ball(s) tilt and actuate an internal reed switch, opening or closing the electrical circuit. This signal can then be used to activate or deactivate pumps, alarms, or other control devices — giving you hands-free, automated liquid level management.
Who Is This For?
This float switch is a practical solution for homeowners, farmers, pool technicians, plumbers, and industrial engineers who need dependable, low-maintenance liquid level control. Whether you're automating a rainwater harvesting tank, managing a sump pump, or controlling water flow in a pool system, this sensor delivers consistent performance.
For more information on electrical safety standards for control devices, visit OSHA Electrical Safety Guidelines. For consumer product safety guidance, see the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: What is a double ball float switch used for?
A: A double ball float switch is used to automatically monitor and control liquid levels in tanks, pools, sump pits, and other reservoirs. The two-ball design provides greater accuracy than a single-ball switch, helping to prevent false readings and ensuring your pump or control system activates only when needed.
Q: Is this stainless steel float switch compatible with pool systems?
A: Yes. The 304 stainless steel construction makes this float switch highly resistant to corrosion and suitable for pool water, freshwater tanks, and many other liquid environments. It handles working pressures up to 1.0 MPa and temperatures from 40°C to 125°C.
Q: Does this float switch require a battery or external power source?
A: No battery is required. The float switch is a passive mechanical-electrical device that operates within your existing electrical circuit (100–265V AC, up to 200W load capacity). It simply opens or closes the circuit based on the liquid level detected by the float balls.
Q: How do I install the double ball float switch in my tank?
A: Installation is straightforward — mount the switch at your desired liquid level point on the tank wall or lid, then connect the wires to your pump or controller circuit. Always follow local electrical codes and turn off power before wiring. No special tools are required for most DIY installations.