Wholesale Automatic Air Release Valve Single Port Type WCB Material PN16 - China Suppliers & Factory Manufacturers, Factory

Type: Flange Type

Series: QB1-10/16

Size: DN40-DN300/2–12

Pressure Rating: PN6/PN10/PN16/PN25

Design Standard: BS/API/DIN/JIS

Service: OEM & ODM

Introducing our high-quality single port air release valve, designed for efficient performance. This valve features a single large exhaust outlet that allows for rapid and substantial air release during the initial stages of water injection. It also provides micro continuous exhaust during operation, effectively eliminating air resistance. With automatic sealing once the water level reaches its full point, it ensures no dripping or leakage, making it a reliable solution for various applications.

Application Scenarios

This flange single port exhaust valve is ideal for high point air release in municipal water supply systems, fire protection, heating and ventilation, high-rise water supply, and long-distance water transmission pipelines. As a leading manufacturer in China, we are committed to providing top-notch solutions to meet the needs of our customers. Connect with us for premium products from trusted suppliers in the industry.

Product Description

Valve Type: Exhaust valve Structure: Single port
Standard: BS/API/DIN/JIS Workmanship: Investment casting
Sealing direction: Single-directional Sealing grade: Zero leakage
Temperature: -20°C < T < 120°C Operation: Self-starting
Single port air exhaust valve ductile iron PN16
Characteristics
The single port air vent valve is fully automatic operation, no manual operation, low resistance, no impact on pipeline flow, simple maintenance, not easy to jam.
Characteristics
Advantages
1
Simple Structure and Low Failure Rate
There is only floating ball + sealing nozzle inside, without complex mechanism.
It is not easy to jam and block, and the clean water system is basically maintenance free.
2
Wide Application Scope and Strong Universality
Municipal water supply, fire protection, heating and ventilation, irrigation and industrial circulating water can be used.
The caliber is complete, and the common specifications of DN25~DN100 are complete.
Easy installation and maintenance.
3
Vertical Installation
During maintenance, only the front valve needs to be closed, and the whole pipeline does not need to be disassembled.
4
Cost-Effective
It is cheaper than the compound exhaust valve and more durable than the small caliber screw valve.
Low cost for long-term use, suitable for batch use in projects.
Packing
📦 Standard export wooden case packaging
Packing
Frequently Asked Questions
Q What is a single port air exhaust valve and how does it work?
A single port air exhaust valve is a fully automatic device used to release trapped air from pipelines. It operates via a floating ball mechanism — when air accumulates, the ball drops, opening the port to release the air; when water rises, the ball floats up and seals the port automatically, requiring no manual intervention.
Q What materials and standards does this air exhaust valve comply with?
This single port air exhaust valve is made from ductile iron and manufactured using investment casting. It complies with multiple international standards including BS, API, DIN, and JIS, making it suitable for a wide range of global applications.
Q What is the operating temperature range of this valve?
The single port air exhaust valve is designed for operating temperatures between -20°C and 120°C, making it suitable for a wide variety of environments including cold climates and moderate-heat industrial applications.
Q What pipeline systems is this air exhaust valve suitable for?
This valve is highly versatile and suitable for municipal water supply systems, fire protection pipelines, heating and ventilation systems, agricultural irrigation networks, and industrial circulating water systems. Available sizes range from DN25 to DN100.
Q How is the single port air exhaust valve installed and maintained?
The valve is installed vertically on the pipeline. Maintenance is simple — only the front valve needs to be closed during servicing, so the entire pipeline does not need to be dismantled. Its straightforward internal structure means it is virtually maintenance-free in clean water systems.
Q How is the product packaged for export?
All single port air exhaust valves are packaged in standard export wooden cases, ensuring safe and secure transportation for international shipments. This packaging method meets common export requirements and protects the product during transit.

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