Automatic Exhaust Valve for Air Systems

The Automatic Exhaust Valve for Air Systems is a crucial core component designed for fluid circulation systems, dedicated to automatically discharging accumulated air, gas and other non-condensable gases in pipelines without manual intervention. By effectively eliminating gas accumulation, it solves common problems such as air resistance, pipeline corrosion, pump cavitation and uneven temperature,

•Product Model：AEV-15、AEV-20、AEV-25
•Product Material：Brass Alloy、Stainless Steel
• MOQ 100pcs (negotiable for bulk order)
•Delivery Time：Sample orders: 3-7 working days after payment confirmation

Product category:

Brass valve Categories

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Product Details

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Product Formation

The Automatic Exhaust Valve for Air Systems is a core component designed for fluid circulation systems, dedicated to automatically discharging air, gas and other non-condensable gases accumulated in pipelines without manual intervention. In air conditioning, heating, water supply and industrial fluid systems, the accumulation of gas will easily cause air resistance, pipeline corrosion, pump cavitation, uneven temperature and other problems, which seriously affect the operation efficiency and service life of the system.

Adopting advanced float-type or diaphragm-type mechanical structure, our automatic exhaust valve can quickly sense the gas accumulation in the system. When gas gathers at the top of the valve body, the float drops to open the exhaust port, and the gas is discharged efficiently; after the gas is exhausted, the liquid level rises, the float resets, and the exhaust port is automatically closed to prevent liquid leakage. The valve body is made of high-quality brass, stainless steel and other corrosion-resistant materials, with precise structure and reliable performance, which can adapt to harsh working environments and realize long-term stable operation of the system.

With the characteristics of high automation, high exhaust efficiency and low maintenance cost, this product is an essential key component to improve the energy efficiency of the system, reduce operating noise and extend the service life of equipment, and is widely recognized in the global market.

KEY WORDS：Automatic Exhaust Valve for Air Systems、Automatic Air Release Valve、HVAC Exhaust Valve、Pipeline Air Exhaust Valve、Brass Automatic Exhaust Valve、

Stainless Steel Air Release Valve

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Product Features

1. Full Automatic Intelligent Exhaust

Adopt high-sensitivity float or diaphragm mechanism, which can automatically detect the gas accumulation in the system and complete the exhaust and closing actions without manual operation. It realizes 24-hour unattended operation, reduces labor cost and avoids human error.

2. Efficient Exhaust & Zero Leakage

Optimized exhaust port design, large exhaust capacity, can quickly discharge a large amount of gas during system water injection, and can also continuously discharge trace gas during operation. After exhaust, the sealing surface fits closely, and the EPDM/VITON sealing ring ensures zero liquid leakage, which is safe and reliable.

3. Corrosion Resistance & Long Service Life

Valve body and bonnet are made of CW617N brass alloy or 304/316 stainless steel; internal float, valve stem, spring and filter screen are all stainless steel, which can effectively resist oxidation and corrosion of media such as water and ethylene glycol solution, and the service life is more than 5 years.

4. Anti-clogging Design

Built-in high-precision stainless steel filter screen, which can filter impurities such as iron filings and hemp threads in the system, prevent the exhaust port from being blocked and affect the sealing performance. The filter screen is detachable and easy to clean and maintain.

5. Wide Adaptability

It is suitable for media such as water and ethylene glycol solution (maximum 60% concentration), and the applicable temperature range is -20℃~120℃, which can meet the working requirements of heating, air conditioning, industrial pipelines and other different systems. The nominal pressure is up to 16bar, and it is compatible with various working pressures.

6. Easy Installation & Maintenance

Standard thread connection (G1/4", G1/2", G3/4", etc.), which can be directly installed at the highest point of the pipeline or the gas gathering part. It is recommended to install a stop valve at the inlet for easy maintenance without shutting down the whole system.

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Product Parameter

Parameter Item	Specification
Product Model	AEV-15, AEV-20, AEV-25
Nominal Diameter	DN10, DN15, DN20, DN25
Nominal Pressure	PN16 (1.6MPa / 16bar)
Maximum Exhaust Pressure	6bar
Applicable Temperature	-20℃ ~ 120℃
Applicable Medium	Water, Ethylene Glycol Solution (≤60%)
Valve Body Material	Brass (CW617N), 304/316 Stainless Steel
Internal Parts Material	Float: Stainless Steel; Valve Stem: Stainless Steel; Spring: Stainless Steel; Filter Screen: Stainless Steel
Sealing Material	EPDM, VITON
Connection Mode	Female Thread (G1/4", G1/2", G3/4", G1")
Working Principle	Float Type / Diaphragm Type
Executive Standard	GB/T8464-2008, ISO 9001
Weight	0.8kg (DN15), 1.2kg (DN20), 3.0kg (DN25)

Application Scenarios

1.HVAC System：Widely used in central air conditioning cooling water system, chilled water system and air handling unit. It is installed at the highest point of the pipeline to discharge the air accumulated in the system, avoid uneven cooling and heating caused by air resistance, and improve the heat exchange efficiency of the air conditioner.

2.Heating System：Suitable for central heating system, floor radiant heating system, radiator heating system and solar water heating system. It solves the problems of uneven heating, coldness of radiators and noise of circulating pumps caused by air accumulation, and reduces energy consumption.

3.Industrial Pipeline System：Applied to chemical, pharmaceutical, food processing, papermaking, mining and other industrial fields. It is used in liquid conveying pipelines, cooling circulation systems and hydraulic systems to discharge gas, prevent pump cavitation and pipeline corrosion, and ensure the stable operation of production processes.

4.Water Supply & Drainage System：Installed in urban water supply pipelines, high-rise building water supply systems and water treatment equipment (such as water tanks, water pumps). It discharges the air in the pipeline to ensure the smooth flow of water, avoid water hammer phenomenon and protect water supply equipment.

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FAQ

Q: Can you accept sample order?

A: Yes, we accept samples with little and reasonable charge.But need customer pay sample fees and transport fees first.

Q: What is your payment terms?
A: Payment supports T/T, L/C, etc.

Q: How can l get my order?
A: We will send you the goods by UPS,DHL,FedEx,Oversea Shipment or other forwarder, all with tracking number.

Q: Why choose us?
A： With over 15 years of experience in the fire protection industry, our company has professional technical personnel and many well-known partners in the domestic market. We offer favorable prices and guarantee quality, having passed multiple certifications!

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With more than 15 years of experience serving clients, we have developed extensive expertise and in-depth industry knowledge, enabling us to deliver reliable and effective solutions tailored to your requirements.
We provide professional technical support and customized service offerings. Our committed technical team is available to assist you with product consultation, installation guidance, and comprehensive after-sales support whenever necessary.
At Sheng Feng Fire, our professionals are dedicated to helping you select the most suitable products based on your specific needs.
Please do not hesitate to contact us for further information！

1.HVAC System