Design Patent Certificate
Iron shell switch (this parameter can be customized)
Switch action pressure: ON: -60 ± 5Pa
Maximum allowable pressure: 1000Pa
Using medium: air
Air tightness: 1000 ± 50Pa

How It Works
A diaphragm or piston is used by a pressure switch air compressor to detect pressure changes. When the pressure in the system drops below a certain level, such as 30 PSI, electrical contacts are closed to start the motor. When the desired pressure is attained, the circuit is broken to turn off the motor. The instrument keeps the house safe from carbon monoxide poisoning by only allowing the furnace to ignite when there is sufficient ventilation. There are variations of gas heater and air conditioner pressure switches which operate on the same principle to prevent problems of blocked airflow or low refrigerant pressure.
Key Applications
HVAC Systems: Air conditioner pressure switches first of all help keep the compressor from overheating, they do so by turning off the units when the refrigerant pressure drops to a low point.
Air compressors: Tank pressure control to avoid over-pressurization and keep the machine running effectively.
Gas Appliances: Gas furnace and gas heater pressure switches are indispensable for ensuring that your heating system has safe airflow and thus avoiding backdrafting or incomplete combustion.
Installation & Maintenance Tips
Compatibility: Make sure you get a switch with the right pressure range for your equipment, for instance, 100–150 PSI for compressors. Check the fittings for corrosion or leaks.
Troubleshooting: If the switch doesn’t work, first test it with a multimeter to see if it’s the switch that’s broken. The diaphragm could be damaged, the vent could be blocked, or something like that. Check the flue pipes for any blockages if you are having issues with the gas furnace pressure switch.
Safety Checks: Ensure that the vents of the gas heater pressure switch are clear of any obstruction and regularly check the accuracy of the air conditioner pressure switches.
Choosing the Right Switch
When deciding, consider these factors:
Accuracy & Environment: The temperature, humidity, or corrosive conditions of your application should be the deciding factors when choosing switches.
Adjustability: Those that have adjustable features let you control precisely cut-in and cut-out pressures. So they are great for customization of pressure switch air compressors.
Repair And Inspection
Set the multimeter to the buzzer setting. Connect the red and black probes to the Air Pressure Switch respectively. Blow air into the positive pressure vent. A buzzer sound will indicate that the internal switch is activated. The reading should be less than 1Ω for normal operation.
Set the multimeter to the 200V DC voltage setting. Connect the red and black probes to the Air Pressure Switch respectively. Turn on the boiler and the hot water tap. The fan should start running. If the voltage drops from 24V to 0V, the air pressure switch is good; otherwise, it is faulty.
[The rated voltage/current of components varies depending on the product series. Please refer to the component nameplate for data.]
Company Introduction
The manufacturing of electrical components is the expertise of Foshan Shunde Nianxun Electric Appliance CO., LTD. We have a major edge in the market for parts for gas water heaters, boilers, and other similar items thanks to years of industry experience and technology accumulation. We are a firm to watch in the electrical component industry because of our broad market coverage, strong manufacturing capabilities, and stable product structure.
Our factory has steadily grown to occupy 1000 square meters since its founding in 2008. Our team of about fifty highly skilled and creative professionals allows us to react swiftly to market demands. Our team offers tailored solutions for our clients and has extensive professional expertise and business experience. With our extensive experience in producing auxiliary products including centrifugal fans, air pressure switches, and stainless steel exhaust pipes, as well as the fact that our goods are sold to over 36 nations globally, we have some sway over the electrical component market.
Company Development
Leveraging an 18-year experience in the industry, the firm has gained extensive market expertise in the field of accessories for gas water heaters and wall-hung boilers. Starting from scratch, it has grown to become a big-name manufacturer of professional accessories. The range of its products comprises the key components for the wall-hung boiler and the gas water heater industries, and their reliability and quality have been proven in the market time and time again.
Besides being sold on the domestic market, our products are also shipped through international trade channels where we serve customers like international commercial equipment suppliers and household appliance manufacturers.
Production Capacity
Equipped with the latest production workshops, assembly lines, and quality testing apparatus from hardware and injection molding to electronic assembly, the company allows for vertical or integrated manufacturing.
We specialize in the design, manufacture, and supply of commercial thermal energy equipment and home appliances parts such as pressure switches and wall-hung boilers fans. We have a background in international trading and exporting, and a considerable degree of technological innovation potential.
Through its advanced machining, stamping, molding, and laser cutting capabilities, the company facilitates independent product R&D and customized production (OEM/ODM).
Technology Upgrade
Such enterprises usually acquire ISO 9001 quality management system certification in order to satisfy the needs of local and foreign customers, and their products meet international safety and environmental standards like CE, CB, and RoHS. The firm puts a great deal of emphasis on technological research and development and strict processes, having a skilled R&D team that can offer tailor-made solutions to the customers' requirements.
Intellectual Property: Several patent certificates, including utility model patents such as "A Device for Testing Wind Pressure Switches," serve as evidence of the company's solid technical know-how in product testing and quality control.
The air pressure switch system has gone through a technological upgrade that has improved its internal parts and working methods as well as its control systems. The device structure will see a major change due to this alteration which will lead to higher product expenses. The minor price increase, however, will yield a better reliability and stability which is what we appreciate most.
Service
Our company gives top priority to product quality through our technical support services before sales and our complete after-sales service system. Our company emphasizes building long-term strategic partnerships and offering customized product solutions. Our manufacturing solutions start with product design and prototyping and continue through mass production and logistics export to deliver complete services to our clients.


Design Patent Certificate


A Commercial Kitchen Fan


A Commercial Kitchen Fan Housing


Air Pressure Switch Performance Detection Device


A Device For Testing Air Pressure Switch


Authoritative Certification


CCC Certification


Transfer Leisheng ODM Report
The air pressure switch is a device in the safety protection measures of the wall-mounted boiler. When the fan stops unexpectedly or the exhaust volume is insufficient due to channel blockage, the air pressure switch will automatically disconnect, thereby ensuring the safe operation of the wall-mounted boiler.
The boiler centrifugal fan is responsible for discharging the exhaust gas generated by the boiler's working combustion state to the outside, while absorbing the required fresh air to provide power for exhaust and ensure the normal operation of the boiler.
When purchasing, pay attention to the brand, quality, performance parameters and after-sales service of the product. At the same time, we can ensure that the quality and performance of the product are more reliable.
We select suitable accessories for you according to the model and power of the wall-mounted boiler to ensure its compatibility and adaptability. In addition, timely technical support and maintenance services are also provided.
You can put forward specific parameter requirements according to your own needs, and we will do our best to customize exclusive products for you.
Yes, if you have an authorized trademark, we can also carry out OEM production to meet your brand expansion needs.
All products provide up to two years of after-sales protection. We will provide you with professional and efficient services to solve any problems you encounter during product use.
We strictly adhere to international trade regulations (such as EU CE, US FCC, and Middle East SASO certifications). We provide product compliance documentation and assist customers with customs clearance, tax, and other issues to ensure smooth order delivery.


Delivery in Time


Cargo Supply Capacity

It is produced with advanced design concepts, fully automated production equipment and advanced testing equipment.

The international fully automated industrial production line has top-notch equipment production capacity.

Master the pre-sales product technology and after-sales solutions of the product.

Welcome to join our brand and become a member of our team.

Establish after-sales service centers around the world, covering the whole country.

We are at your service 24 hours a day, anytime, anywhere, whenever you need us.