In any water supply system—whether residential, commercial, or industrial—maintaining consistent water pressure is essential for safety, efficiency, and performance. When the water pressure is too low, flow becomes unstable, affecting equipment and user comfort. When it's too high, pipes, fittings, and pumps can suffer serious damage. To maintain the perfect balance, the pressure switch is the key control component.
A pressure switch for water supply systems automatically turns a water pump on or off based on preset pressure levels. This ensures that the system always operates within a safe and efficient range. Choosing the right pressure switch is crucial not only for system protection but also for energy savings and reliable operation over time.
A pressure switch detects the pressure level inside a tank or pipeline. When the water pressure drops below a defined “cut-in” level, the switch activates the pump to increase pressure. Once the system reaches the upper “cut-out” threshold, the switch turns the pump off. This automatic cycling keeps pressure stable and prevents pumps from running continuously or overheating.
Lefoo, a global manufacturer of pressure control solutions, designs reliable and durable pressure switches that deliver consistent performance in diverse water systems. Their models—such as the Lefoo LF42 and LF19—are known for precise calibration, robust construction, and long service life.
Selecting a suitable pressure switch directly impacts system efficiency and longevity. An undersized switch may fail to handle high pressure, while an oversized one could cause pressure fluctuations or excessive cycling. The wrong configuration can also waste energy or lead to premature pump failure.
A well-matched switch, on the other hand, ensures that the pump operates only when necessary, reducing wear and extending equipment lifespan. For households, this means steady water flow and quiet operation. For industrial or agricultural systems, it means stable water delivery and lower maintenance costs.
Pressure Range
The first consideration is the system's operating pressure. Most water supply systems function between 1.4 and 5.5 bar (20–80 psi). Choose a switch that supports the specific pressure range required for your application. Lefoo provides customizable settings to ensure accurate control for different pump types and capacities.
Electrical Ratings
Check the switch's voltage and current capacity to ensure compatibility with your pump motor. Lefoo pressure switches are available in multiple configurations suitable for both single-phase and three-phase systems.
Environmental Conditions
For outdoor or harsh environments, choose switches with protective housings and corrosion-resistant materials. Lefoo's waterproof and dustproof designs guarantee reliability even in humid or dusty surroundings.
Type of Application
Residential: For home water systems, compact switches like the LF19 provide simple and efficient control.
Commercial: Systems that handle larger water volumes benefit from adjustable switches with higher accuracy.
Industrial/Agricultural: Heavy-duty switches designed for continuous operation and frequent cycling, like the LF42, are ideal.
Adjustability and Calibration
Adjustable Lefoo pressure switches allow users to fine-tune the cut-in and cut-out settings for optimal performance. Proper calibration ensures that pumps neither overwork nor underperform.
In modern water supply systems, automation is essential for maintaining consistent performance and energy efficiency. Lefoo integrates advanced engineering into its pressure switches, ensuring accurate response and seamless pump control. These devices form the heart of automatic pressure control systems, eliminating the need for manual supervision.
For example, in a booster pump system, a Lefoo pressure switch automatically starts the pump when demand increases—such as when multiple faucets are open—and stops it when the system pressure is restored. This process optimizes energy use, minimizes wear, and guarantees steady water delivery at all times.
Precision Control: Maintains stable system pressure, protecting pumps and pipes from damage.
Energy Efficiency: Prevents unnecessary pump operation, saving power and extending component lifespan.
Reliability: Manufactured with high-quality materials, Lefoo switches withstand long-term mechanical and electrical stress.
Easy Installation: Designed for plug-and-play integration with various pump systems.
Safety and Compliance: Meets international quality standards for electrical and mechanical performance.
With these benefits, Lefoo pressure switches have become a trusted solution in domestic, agricultural, and industrial water management systems worldwide.
Lefoo has been developing pressure control technology for decades, serving a wide range of industries including HVAC, water treatment, and fluid control. Each Lefoo pressure switch is tested for accuracy, durability, and safety before leaving the factory. This commitment to quality ensures that customers receive products capable of delivering long-term reliability and performance.
From simple mechanical switches to advanced digital controllers, Lefoo provides comprehensive pressure management solutions that adapt to modern automation needs. Their expertise and continuous innovation make them a preferred partner for global manufacturers and system integrators.
Whether you're managing a small residential setup or an industrial water distribution system, Lefoo provides the technology you can depend on for accurate pressure control and consistent water supply.
Log in 
English 
