How to deflate the automatic exhaust valve
The automatic exhaust valve is an important component in the heating system or pipeline equipment. It is used to remove the air in the pipeline and ensure the normal operation of the system. If the exhaust valve fails or requires manual deflation, correct operating procedures are critical. This article will introduce the deflation method of the automatic exhaust valve in detail, and attach relevant data for reference.
1. The function of automatic exhaust valve
Automatic exhaust valves are mainly used in the following scenarios:
| scene | function |
|---|---|
| heating system | Remove air from pipes to prevent air blockage from affecting hot water circulation |
| water supply pipeline | Prevents air accumulation causing unstable water pressure |
| industrial equipment | Ensure fluid delivery efficiency |
2. Steps to deflate the automatic exhaust valve
The following is the specific operation process for manual deflation:
| steps | Operating Instructions |
|---|---|
| 1. Shut down the system | Stop the heating or water system to ensure the pressure drops to a safe range |
| 2. Position the exhaust valve | Find the location of the exhaust valve, usually at the highest point of the pipe |
| 3. Prepare tools | Prepare a screwdriver or special key to open the exhaust valve |
| 4. Deflate slowly | Turn the exhaust valve screw counterclockwise and begin to deflate when you hear a "hissing" sound. |
| 5. Watch the water flow | When the exhaust valve discharges continuous water flow, it means that the air has been exhausted |
| 6. Close the exhaust valve | Tighten the screws clockwise to restore system operation |
3. Common problems and solutions
The following problems may be encountered during the deflation process:
| question | Reason | Solution |
|---|---|---|
| Exhaust valve leaking | The sealing ring is aged or damaged | Replace sealing ring or integral valve |
| Unable to exhaust | Valve clogged or corroded | Clean or replace exhaust valve |
| Continuous exhaust | Abnormal air intake or pressure in the system | Check system tightness |
4. Precautions
1.Safety first:Be sure to make sure the system pressure has been released before deflating to avoid damage caused by high temperature or high pressure.
2.Regular inspection: It is recommended to check the status of the exhaust valve every year before the heating season to prevent failure due to long-term non-use.
3.Professional maintenance: If the problem is not solved after deflating for many times, it is recommended to contact professional maintenance personnel.
4.Accessories to match: When replacing the exhaust valve, you need to choose a product that matches the original model to ensure compatibility.
5. Suggestions for purchasing automatic exhaust valves
If you need to replace the exhaust valve, you can refer to the following purchase criteria:
| parameters | Recommended value |
|---|---|
| Material | Brass or stainless steel, corrosion resistant |
| Temperature resistance range | -10℃~120℃ (applicable to heating system) |
| pressure level | ≥1.0MPa |
| Interface size | Need to match the pipe (commonly 1/2" or 3/4") |
Through the above steps and precautions, you can successfully complete the deflation operation of the automatic exhaust valve. If you encounter complex problems, it is recommended to consult a professional to ensure the security of your system.
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