
Straight Rod Stainless Steel Float Level Switch(Single Ball)
304/316 stainless steel float level switch
High-temperature and corrosion-resistant
Compact, lightweight, and durable
Magnetic reed switch with ring magnet
Thickened rubber sealing for waterproofing
Two high-temp braided wires (120°C)

Application
- Water purifiers and drinking machines
- Water heaters and solar water systems
- Air conditioners and humidifiers
- Coffee machines and small refrigerators
- Anti-dry protection systems for heating equipment
- Automotive liquid systems
- Industrial liquid level control
- Agricultural water equipment
- Household appliances requiring water level monitoring
Description
The straight rod stainless steel float level switch is a high-temperature, corrosion-resistant small float valve designed for precise water level control. Featuring a magnetic reed switch and ring magnet, it provides accurate switching without an external power source. Its compact, lightweight design and simple working principle ensure reliable performance for both household and industrial applications. The thickened sealing gasket and laser-welded seamless construction guarantee strong waterproof performance and long service life.
Features
- 304/316 stainless steel construction for high durability and corrosion resistance
- High-temperature resistant, acid-resistant, and alkali-resistant braided wires
- Resistant to oils and various chemical media
- Thickened sealing structure with rubber gasket for strong waterproofing
- Magnetic reed switch ensures precise on/off operation without external power
- Ring magnet enhances control accuracy
- Compact, lightweight, and reliable for various environments
- OKI reed switch provides longer service life
Technical Details
Product Type:
Float Level Switch
Product Model:
ES4510 ES6010 ES7510 ES10010 ES12010 ES15010 ES18010 ES20010 ES25010 ES30010 ES35010 ES40010 ES45010 ES50010 ES55010 ES60010 ES70010 ES75010 ES80010 ES90010 ES100010
Type:
Straight Rod Stainless Steel Float Level Switch(Single Ball)
Size:
See attached drawing
Operating Temperature:
-30°C to +120°C
Max Contact Rating:
10VA (1A1) / 50VA (2A1)
Max Switching Voltage:
100V AC/DC (1A1) / 220V AC/DC (2A1)
Max Switching Current:
0.5A (1A1) / 1.5A (2A1)
Max Breakdown Voltage:
110V AC/DC (1A1) / 300V AC/DC (2A1)
Max Contact Resistance:
100mΩ (1A1 / 2A1)
Float Ball Material:
SU304/316 Stainless Steel
Float Body Material:
SU304/316 Stainless Steel
Cable:
Two high-temperature braided wires, resistant to acids, alkalis, oils
Accessories
What is the difference between single ball and double ball models?
Single Ball: Uses one float for basic water level control, suitable for simpler systems and smaller tanks. Double Ball: Uses two floats for more precise water level monitoring, often in systems requiring dual-level detection. It also uses four 30CMPVC wires for added durability and flexibility.
What materials are used in these float switches?
Both models are made of 316 stainless steel (SU304 for standard series) for the float and body, ensuring corrosion resistance and long service life. Single Ball: uses two high-temperature braided wires for durability and heat resistance. Double Ball: uses four PVC wires for flexibility, wear resistance, and long-term use.
Can they be used in high-temperature applications?
Yes, single ball switches have two high-temperature braided wires rated for 120°C, while double ball switches use four 30CMPVC wires rated for 80°C. The switches themselves operate safely in environments from -30°C to +120°C.
Are these switches suitable for corrosive liquids or oils?
Yes, the stainless steel construction, PVC or silicone-insulated wires, and thickened sealing gaskets make both models resistant to acids, alkalis, oils, and various chemical media.
How does the magnetic reed switch work?
The magnetic reed switch is controlled by a ring magnet inside the float. It provides accurate on/off control without requiring an external power source. OKI reed switches are used for higher reliability and longer operational life.
How easy is installation?
Both single and double ball models are straight-rod designs, allowing vertical or top mounting inside tanks or containers. The compact design makes them suitable for narrow or space-limited tanks and devices.
What types of applications are suitable?
Water purifiers, drinking machines, and small household appliances Water heaters, solar water systems, and coffee machines Air conditioners, humidifiers, and small refrigerators Automotive liquid systems, industrial liquid control, and agricultural irrigation equipment Anti-dry protection systems for heating equipment
How long is the service life?
The stainless steel construction, reinforced wires, thickened sealing gaskets, and magnetic reed switch provide long-lasting, stable performance.



















