1 Inch Thread Stainless Steel Float Level Switch with Waterproof Sealed Head(single ball)
Waterproof sealed-head float level switch
Excellent waterproof and dustproof performance
Anti-oxidation sealed cable outlet structure
1-inch threaded stainless steel installation
Stable reed switch with reliable operation
Suitable for industrial liquid level control
Application
Industrial water tanks and storage tanks
Pump and water level control systems
Water treatment equipment
Industrial automation systems
Cooling and circulation systems
Liquid level alarm systems
Machinery requiring waterproof electrical protection
Outdoor or humid industrial environments
Chemical and liquid storage equipment
Description
The 1-inch thread stainless steel float level switch with waterproof sealed head is a reed switch type liquid level controller designed for reliable liquid level monitoring in industrial and commercial environments. Compared with ordinary cable outlet structures, the waterproof sealed-head design provides better waterproof, dustproof, oxidation-resistant, and sealing performance, making it more suitable for humid or harsh working conditions.
The integrated sealed cable outlet structure effectively protects internal electrical connections from moisture, oil vapor, dust, and corrosion, helping improve long-term operational stability and service life. The compact threaded installation design allows easy installation and stable mounting in tanks, water systems, and automation equipment.
Made of high-quality stainless steel with imported reed switch components and laser welding technology, the product offers excellent corrosion resistance, stable switching performance, and reliable liquid level detection. It is widely used in water tanks, industrial automation systems, pumps, and liquid control equipment requiring durable waterproof protection.
Features
- Waterproof sealed-head structure with excellent sealing performance
- Dustproof and anti-oxidation cable outlet design
- 1-inch threaded mounting for stable installation
- High-quality stainless steel construction with corrosion resistance
- Imported reed switch with stable and reliable performance
- Laser welding technology for durable leak-proof sealing
- Suitable for humid and industrial working environments
- Stable liquid level detection with long service life
Technical Details
Product Type:
Float Level Switch
Product Model:
Material:
Stainless Steel (304/316 Optional)
Size:
See attached drawing
Type:
1 Inch Thread Stainless Steel Float Level Switch with Waterproof Sealed Head
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)
Thread Size:
1 Inch
Installation Type:
Threaded Mounting
Switch Type:
Imported Reed Switch
Protection Level:
IP65 or Higher
Cable Outlet Type:
Waterproof Sealed Head Structure
Accessories
What is a waterproof sealed head float level switch used for?
This float level switch is mainly used for liquid level detection and automatic control in industrial tanks, reservoirs, water treatment systems, chemical containers, and pump control equipment. It is commonly used for: Pump control Overflow protection Dry-run protection High/low level alarm Automatic liquid level monitoring The waterproof sealed head design provides better cable protection and sealing performance in humid or outdoor environments.
What is the advantage of the waterproof sealed head design?
The waterproof sealed head design provides: Better waterproof protection Improved cable sealing Reduced moisture penetration Better long-term reliability Suitable for humid and industrial environments It is especially suitable for outdoor equipment, water treatment systems, and high-humidity applications.
Is it normally open (NO) or normally closed (NC)?
It supports both Normally Open (NO) and Normally Closed (NC), depending on the float orientation. The switching logic can be changed by reversing the float by 180°. Lower-Open Type (Default) ① When the liquid level rises, the float moves away from the reed switch position, and the switch turns OFF. ② When the liquid level falls, the float returns to the reed switch position, and the switch turns ON. Upper-Open Type ① When the liquid level rises, the float returns to the reed switch position, and the switch turns ON. ② When the liquid level falls, the float moves away from the reed switch position, and the switch turns OFF. Note The factory default is usually the lower-open type, but users can adjust it according to control requirements.
Can the float switch directly control pumps or solenoid valves?
No — not recommended for direct load switching. The internal reed switch is designed for low-current signal applications and should not directly control inductive or high-power loads such as pumps or solenoid valves. Recommended solution: Control signal → relay or PLC input Pump or valve → relay / contactor / motor starter → load ⚠ In low-power applications (such as small DC pumps or low-current valves), direct switching may only be possible if the load is within the switch rated specifications. Direct connection may reduce service life or damage the reed contacts.
What are the advantages of the 1-inch thread design?
Compared with smaller thread models, the 1-inch thread structure provides: Stronger installation stability Better sealing performance Higher mechanical strength More suitable for industrial tanks Easier installation in large equipment
What liquids are suitable for this float switch?
Suitable for: Water Oil Cooling liquid Industrial liquids Chemical liquids compatible with stainless steel Not recommended for: Heavy sludge Liquids with large debris Highly viscous media
Can rod length and cable length be customized?
Yes. Customization options include: Rod length Float quantity Cable length Thread size Wire specification OEM / ODM production
What should buyers confirm before ordering?
Buyers should confirm: Liquid type Working temperature Working pressure Installation direction Thread size Rod length Cable length NO / NC logic Voltage/current requirements Quantity and customization requirements
When should the single-ball model be selected?
Choose the single-ball model if: Only one switching point is required Installation space is limited High sensitivity is needed Compact equipment design is preferred
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Floats are available in 1–4 pieces (optional,or more), and the rod length can be customized.
Notes:Float switches cannot directly control solenoid valves, high-power relays, AC contactors, etc. A small relay HH45P is required for transition.
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