Based on the provided reference, if your expansion tank is losing pressure specifically due to an air leak from its valve, you can add air back to the tank.
The method involves using a pump connected to the tank's valve.
Tools for Adding Air
According to the reference, there are two primary tools you can use to add air to your expansion tank if the air leak is from the valve:
- An air compressor pump: This is a quicker method.
- A manual tire pump: This requires more effort but is considered safer.
The reference states that a manual tire pump is preferable because it is less likely to rupture the tank's bladder due to high pressure.
The Process (Based on Reference)
- Identify that the pressure loss is specifically from an air leak originating from the valve. (The reference only provides a method for this specific cause).
- Choose your pump: an air compressor or a manual tire pump.
- Connect the pump to the air valve on the expansion tank.
- Carefully add air using the pump.
Note: The reference focuses solely on the scenario where the leak is from the valve and does not detail the specific pressure levels or steps beyond selecting the tool and connecting it.
For more information on common issues, you can refer to resources like the one provided: How to Fix Common Water Heater Expansion Tank Problems.
