Definition and Use of Exhaust Valve

The exhaust valve is an important component in the pipeline system, mainly used to remove air inside the pipeline to prevent gas from interfering with the operation of the system. It can ensure the smooth flow of fluid in the pipeline and avoid pressure fluctuations or pipeline damage caused by gas accumulation.

Working principle of exhaust valve

The working principle of the exhaust valve usually involves a floating element (such as a float). When there is air in the pipeline, the float rises, opens the exhaust channel, and allows air to escape. When the pipeline is filled with water, the float sinks, closes the exhaust channel, and prevents water from flowing out. Some exhaust valves are also equipped with springs or other mechanical devices to ensure that they can maintain a seal even in the absence of water.

Types of exhaust valves

There are many types of exhaust valves, including manual exhaust valves and automatic exhaust valves. Manual exhaust valves require manual operation to control the discharge of air, while automatic exhaust valves can automatically adjust according to the pressure changes inside the system without manual intervention. Automatic exhaust valves can be further divided into low-pressure air valves, high-pressure trace air valves, and combined air valves, each type for different application scenarios and needs.

Considerations when choosing an exhaust valve

When choosing an exhaust valve, the following factors need to be considered:

• Fluid characteristics: Choose the appropriate exhaust valve type according to the medium flowing in the pipeline (such as water, oil, steam, etc.).
• Working conditions: Consider the ambient temperature, pressure range and presence of corrosive substances where the exhaust valve is located.
• Flow requirements: Choose an exhaust valve of appropriate specifications according to the diameter of the pipeline and the expected flow rate.
• Installation location: The exhaust valve is usually installed at a high or low point in the pipeline to effectively remove air.
• Maintenance and durability: Choose an exhaust valve that is easy to maintain and has a long service life.

Latest information

According to the latest search results, QB2 double-port exhaust valve is a commonly used exhaust valve suitable for water and hot water pipelines with a temperature not exceeding 100°C. It can remove gas from the pipeline, reduce resistance and save energy. When the pipeline is under negative pressure, it can quickly and automatically inhale air to prevent the pipeline from rupture. The float is made of stainless steel, has a long service life, and is safe and reliable.

When choosing an exhaust valve, the above factors should be considered and the latest product information and technical requirements should be referred to ensure that the exhaust valve that best suits your specific application needs is selected.