How to recharge pressure tank?

[Andeh]

I'm having a release of water down the discharge pipe/tundish, and as it's fresh water it's not from the heating circuit. The heating circuit suffered identical failure modes and glycol water release down tundish, a few months ago, due to a rusted through pressure tank. Replacing the tank with a recharged one resolved that issue.

 

With it now reoccurring with fresh water it has me thinking my pressure tank has failed.

 

I tried the nipple on the top, and pressing down on it didn't release any air... So I'm assuming it needs to be recharge.

 

 I've tried two bike pumps, but neither seem to work, I don't think they are pushing the pin down on the nipple... But the fact they manage it on a bike has me unsure? 

 

Is there a knack or technique I'm missing here? 

 

 

[Nickfromwales]

16 minutes ago, Andeh said:

I'm having a release of water down the discharge pipe/tundish, and as it's fresh water it's not from the heating circuit. The heating circuit suffered identical failure modes and glycol water release down tundish, a few months ago, due to a rusted through pressure tank. Replacing the tank with a recharged one resolved that issue.

 

With it now reoccurring with fresh water it has me thinking my pressure tank has failed.

 

I tried the nipple on the top, and pressing down on it didn't release any air... So I'm assuming it needs to be recharge.

 

 I've tried two bike pumps, but neither seem to work, I don't think they are pushing the pin down on the nipple... But the fact they manage it on a bike has me unsure? 

 

Is there a knack or technique I'm missing here? 

 

 

Probably failed, so it won’t hold the pressure your putting in. 
 

Are you 100% sure you’re getting air into it? 

 

I assume you know the cold mains needs to be off and at least one hot tap open to do this?

[Andeh]

29 minutes ago, Nickfromwales said:

Are you 100% sure you’re getting air into it? 

 

I assume you know the cold mains needs to be off and at least one hot tap open to do this?

 

 

Erm...... 🙃

 

Let me come back to you tomorrow once I've got home and tried it again. Thanks! 

[JohnMo]

2 hours ago, Andeh said:

glycol water

Watch this, lots of reasons to dump the glycol - plus are you managing it's condition and any acidity build up.

https://youtu.be/gHHrQzoX7C0?si=GtEdv9g732mCe_xK