Pressure switches for pumps — buy PacsEngineering equipment online
PacsEngineering pressure switches are reliable devices designed for monitoring and automatic control of pressure in water supply, heating, and ventilation systems.
They ensure safe and stable pump operation, prevent failures, and protect equipment from overloads and dry-run conditions.
What is a pressure switch and how does it work
A pressure switch (pressostat) is an electromechanical device that reacts to changes in liquid or air pressure in the system.
Its main function is to turn the pump on or off when preset pressure limits are reached.
Operating principle:
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When pressure increases, the membrane compresses, closing or opening the electrical contacts.
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When pressure decreases, the contacts switch back, and the pump restarts automatically.
This mechanism maintains optimal system pressure, ensures stable water supply, and protects the pump from dry-run operation.
Applications of PacsEngineering pressure switches
PacsEngineering pressostats are widely used in:
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Domestic and industrial pumping stations
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Heating and water supply systems
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Gas boilers and compressors
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Ventilation and smoke-extraction automation
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Firefighting and industrial installations
In gas boilers, air (draft) pressure switches monitor fan operation and combustion gas removal, ensuring safe and efficient boiler performance.
Main functions of a pressure switch:
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Pressure monitoring and automatic pump start/stop
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Dry-run protection — switches off the pump when no water is detected
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Motor and system protection from overheating and wear
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Airflow and draft control in boilers
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Fault signaling and safety alerts
Types of pressure switches for pumps
1. Mechanical pressure switches
Simple and durable devices based on a membrane and micro-switch mechanism.
Ideal for domestic pumps and pump stations.
Advantages:
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Affordable price
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Easy setup and calibration
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Stable operation under voltage fluctuations
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Long service life
2. Electronic pressure switches
Modern models with digital control and dry-run protection.
They provide more precise pressure regulation and can be integrated into automated systems.
Advantages:
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High regulation accuracy
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Digital display for real-time monitoring
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Automatic restart function
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Overload and voltage protection
3. Air and draft pressure switches
Used in gas boilers to monitor airflow and exhaust gas removal.
They block gas supply if no air pressure or draft is detected, ensuring complete operational safety.
How to choose a pressure switch for your pump
When selecting the right model, consider:
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Operating pressure range — must match pump specifications
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Medium type — water, air, or exhaust gases
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Connection type — threaded or flanged
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Number of micro-switch contacts — single or double circuit
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Switching pressure value — measured in Pa or mbar
PacsEngineering tip: choose a pressure switch with a slight pressure reserve to extend fan life and improve system efficiency.
Advantages of PacsEngineering pressure switches:
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Certified quality and reliable automation
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Resistance to temperature and humidity fluctuations
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High accuracy and sensitivity
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Compatibility with pumps and boilers from all major brands
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Compact size and easy installation
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Warranty and technical support
On the PacsEngineering website, you can buy pressure switches for pumps — including mechanical, electronic, and pneumatic models suitable for pumping stations, heating systems, and gas boilers.
We offer fast delivery, professional consultation, and quality assurance from the PacsEngineering brand.
PacsEngineering — reliable automation for stable and efficient system operation!