The UQK-61 Heavy Duty Float Switch is designed for dependable liquid level monitoring and pump control in tanks, pits, sewage systems and industrial wastewater applications. It uses a floating ball and internal contact mechanism to detect liquid level changes, then sends a switch signal for pump start/stop control, high-level alarm, low-level protection or automatic drainage.
For buyers who need a simple, durable and cost-effective level control solution, the UQK-61 series offers practical options from single-point to multi-point level control, making it suitable for both open tanks and industrial liquid handling systems.
Why Choose the UQK-61 Float Level Switch?
In real industrial use, a float switch must do more than “turn on and off.” It needs to keep working in humid, dirty and demanding environments. The UQK-61 is built for applications where stable liquid level control matters, especially in sewage, wastewater, water tanks and pump systems.
It is commonly used to:
- Control sewage pumps and drainage pumps
- Detect high or low liquid level in tanks
- Prevent pump dry running
- Trigger overflow alarms
- Support automatic filling or emptying systems
- Monitor industrial wastewater, sanitary sewage and process water
Key Features
Heavy Duty Design for Industrial Use
The UQK-61 float switch is suitable for demanding water and wastewater environments. Its floating ball design works with the rise and fall of the liquid level, helping users achieve stable pump control without complicated electronic settings.
Single-Point to Multi-Point Control Options
The UQK-61 series can be supplied in different control configurations, including:
- UQK-611: single-point level control
- UQK-612: two-point level control
- UQK-613: three-point level control
- UQK-614: four-point level control
This allows the switch to be used for simple level alarm systems or more complete pump start/stop control.
NO or NC Contact Output
The contact output can be configured as normally open or normally closed, depending on the control logic of the pump, alarm or control cabinet. This gives engineers and installers more flexibility when integrating the switch into existing systems.
Suitable for Sewage and Wastewater Applications
Compared with many small plastic float switches, the UQK-61 is better suited for heavier working conditions, including sewage pits, industrial wastewater tanks and drainage systems. It is often used where floating debris or unstable water levels may appear.
Easy Installation and Adjustment
The level control point can be adjusted by changing the clamping position or cable length, depending on the selected model. This makes it easier to match different tank depths and liquid level requirements.
Low Maintenance Operation
The structure is simple and practical. There is no need for complicated calibration during normal use, which helps reduce maintenance time for pump rooms, tank systems and wastewater facilities.
Typical Specifications
| Item | UQK-61 Heavy Duty Float Switch |
| Product Type | Magnetic float level switch / float level controller |
| Model Options | UQK-611, UQK-612, UQK-613, UQK-614 |
| Control Points | Single-point, two-point, three-point, four-point |
| Contact Type | Normally open or normally closed |
| Common Contact Rating | 220VAC 1A / 220VDC 1A, depending on configuration |
| Contact Output | Reed switch contact or micro switch contact |
| Typical Adjustable Range | 0.3m–10m, depending on model and installation |
| Medium Temperature | ABS version: approx. -10°C to +80°C; stainless steel version may support higher temperature |
| Main Accessories | Cable, suspension wire, heavy weight, clamp holder, junction box |
| Applications | Sewage, wastewater, water tank, drainage pump, industrial liquid level control |
Note: Technical data may vary by material, contact type and production batch. Final specifications should be confirmed before ordering.

Applications
Sewage Pump Control
The UQK-61 heavy duty float switch can be used in sewage pits and wastewater collection tanks to start or stop pumps automatically. When the liquid level reaches the set point, the switch sends a contact signal to the control system.
Industrial Wastewater Tanks
For factories, workshops and process water systems, the UQK-61 helps monitor liquid levels and reduce the risk of overflow, dry running or manual operation errors.
Water Tank Level Control
It can also be used in water storage tanks, drainage tanks and open containers where reliable high/low level detection is required.
High and Low Level Alarm
With the right control cabinet or alarm device, the UQK-61 can be used to trigger warning signals when liquid levels are too high or too low.
Pump Protection
By detecting low liquid level conditions, the float switch can help protect pumps from dry running and reduce unnecessary equipment damage.


How the UQK-61 Float Switch Works
The float moves with the liquid level. When the liquid reaches the preset height, the internal contact changes status and sends an electrical signal. This signal can be used to control a pump, valve, alarm or relay.
In simple terms:
- Liquid level rises or falls.
- The float moves with the liquid.
- The internal contact changes state.
- The control system receives the signal.
- Pump, alarm or valve action is triggered.
This simple working principle makes the UQK-61 a practical choice for many industrial level control systems.
Available Models
UQK-611 Single-Point Float Switch
Suitable for simple level detection or alarm control. It is often used where only one level point needs to be monitored.
UQK-612 Two-Point Float Switch
Suitable for high and low level control, such as pump start and stop control in tanks or sewage pits.
UQK-613 Three-Point Float Switch
Used when additional alarm or intermediate level control is required.
UQK-614 Four-Point Float Switch
Suitable for more complete liquid level control systems where multiple control points are needed.
Product Advantages
- Reliable solution for liquid level control
- Suitable for sewage, wastewater and tank applications
- Single-point to four-point control options
- Normally open or normally closed contact available
- Easy installation and level adjustment
- Simple structure with low maintenance needs
- Works with pumps, alarms, relays and control cabinets
- OEM and bulk supply available for industrial projects
Ordering Information
When sending an inquiry, please provide:
- Required model: UQK-611 / UQK-612 / UQK-613 / UQK-614
- Number of control points
- Tank depth or required control range
- Liquid type: water, sewage, wastewater, chemical liquid, etc.
- Working temperature
- Contact type: NO or NC
- Cable length requirement
- Quantity and destination country
This helps us recommend a suitable configuration and provide an accurate quotation.
FAQ
What is the UQK-61 float switch used for?
The UQK-61 float switch is used for liquid level control in tanks, sewage pits, wastewater systems and pump control applications. It can send a switch signal for pump start/stop, overflow alarm or low-level protection.
Can the UQK-61 be used for sewage?
Yes. The UQK-61 series is commonly used for sewage and wastewater level control. For heavy sewage or liquids with many floating solids, the correct model and installation method should be selected.
What is the difference between UQK-611 and UQK-614?
UQK-611 is a single-point float switch, while UQK-614 is a four-point float switch. The right model depends on how many liquid level points you need to control.
Does it support normally open and normally closed contact?
Yes. The UQK-61 float level switch can be supplied with normally open or normally closed contact output, depending on your control requirements.
Can you customize the cable length?
Yes. Cable length and accessories can usually be supplied according to project requirements. Please confirm the working condition before ordering.
Call to Action
Looking for a reliable UQK-61 heavy duty float switch for sewage, wastewater or tank level control?
Contact us with your tank size, liquid type and control requirements. Our team can help you choose the right model and provide a fast quotation for your project.