How to exhaust the automatic exhaust valve
The automatic exhaust valve is a device used to remove air from the pipeline system and is widely used in heating, water supply, air conditioning and other systems. Its main function is to automatically discharge the air in the pipeline to ensure the normal operation of the system. This article will introduce in detail the working principle of the automatic exhaust valve, the exhaust method and the solutions to common problems.
1. Working principle of automatic exhaust valve
The automatic exhaust valve senses the amount of air in the pipeline through a float or spring mechanism. When the air accumulates to a certain amount, the valve automatically opens to exhaust. After the exhaust is completed, the valve automatically closes to prevent liquid leakage.
2. Exhaust method of automatic exhaust valve
The following are common venting steps for automatic vent valves:
| steps | Operating Instructions |
|---|---|
| 1 | Check whether the exhaust valve is installed correctly and make sure the valve is open. |
| 2 | Slowly open the system water or heating valve to allow water to enter the pipe. |
| 3 | Observe the exhaust valve to see if there is gas being discharged. There is usually a "hissing" sound. |
| 4 | Wait for the exhaust to be completed and the valve to automatically close, then check whether the system pressure is normal. |
3. Common problems and solutions
The following are the problems and solutions that may be encountered during the use of automatic exhaust valves:
| question | Reason | solution |
|---|---|---|
| Exhaust valve does not exhaust | The valve is clogged or the float is stuck | Disassemble, clean or replace valve |
| Exhaust valve leaking | The sealing ring is aged or damaged | Replace seal or entire valve |
| Exhaust valve opens frequently | Too much air or unstable pressure in the system | Check system tightness and adjust pressure |
4. How to choose automatic exhaust valve
When selecting an automatic exhaust valve, consider the following factors:
| factors | Description |
|---|---|
| Material | Stainless steel, brass and other corrosion-resistant materials |
| pressure range | Choose the appropriate model based on system pressure |
| temperature range | Suitable for high or low temperature environments |
| Installation method | Vertical or horizontal installation, choice based on piping design |
5. Maintenance of automatic exhaust valve
Regular maintenance of the automatic exhaust valve can extend its service life. The specific maintenance methods are as follows:
| maintenance items | operating frequency |
|---|---|
| Clean the valve | Once every 6 months |
| Check the sealing ring | once a year |
| Test exhaust function | Quarterly |
6. Summary
Automatic vent valves are an essential component in piping systems, and proper use and maintenance ensure the system operates efficiently. Through the introduction of this article, you should have a deeper understanding of the exhaust methods, common problems and solutions of automatic exhaust valves. If you encounter other problems during use, it is recommended to consult professional technicians.
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