Jump to content

Replacement accumulator


Featured Posts

I need to replace the pressure vessel in my water system. I have a red expansion vessel and a white accumulator which appears to have failed. Do I have to replace like for like, or can I replace my white one with a red, which seem cheaper. I know the white ones are for potable water, but does it really make any difference?

Link to comment
Share on other sites

I don’t think the colour is important but what is important is that it’s designed for potable water, not for central heating.

 

If you fit one that is designed for central heating coolant (which has antifreeze/corrosion inhibitor in it) then in the presence of ordinary water it will corrode fairly quickly.

Link to comment
Share on other sites

Just now, nicknorman said:

I don’t think the colour is important but what is important is that it’s designed for potable water, not for central heating.

 

If you fit one that is designed for central heating coolant (which has antifreeze/corrosion inhibitor in it) then in the presence of ordinary water it will corrode fairly quickly.

Wow, that was quick! I felt sure that there would be a reason something like that. Thanks!

Link to comment
Share on other sites

Take a champagne bottle, a balloon a tee piece and a tube of Araldite, Drink the champagne.  Poke the balloon into the bottle with the neck sticking out. Blow up the balloon and tie a knot in it's neck and poke it down into the bottle. Araldite the tee piece into the bottle neck. For big systems use a magnum bottle. Install. :closedeyes:

Link to comment
Share on other sites

3 minutes ago, bizzard said:

Take a champagne bottle, a balloon a tee piece and a tube of Araldite, Drink the champagne.  Poke the balloon into the bottle with the neck sticking out. Blow up the balloon and tie a knot in it's neck and poke it down into the bottle. Araldite the tee piece into the bottle neck. For big systems use a magnum bottle. Install. :closedeyes:

I like that plan as far as drinking the champagne. After that , I don't think I'd really care about doing the rest!

Link to comment
Share on other sites

On 26/11/2020 at 17:32, monkeyhanger said:

I need to replace the pressure vessel in my water system. I have a red expansion vessel and a white accumulator which appears to have failed. Do I have to replace like for like, or can I replace my white one with a red, which seem cheaper. I know the white ones are for potable water, but does it really make any difference?

I don't need to replace the pressure vessel after all. It seems to have lost most of its air for some reason. I repressurised it and after a few days, it seems to holding its pressure. Problem sorted!  Thank you everyone for your help. Now I just need to empty the champers bottle, so that I have a spare just in case.

Link to comment
Share on other sites

8 hours ago, monkeyhanger said:

I don't need to replace the pressure vessel after all. It seems to have lost most of its air for some reason. I repressurised it and after a few days, it seems to holding its pressure. Problem sorted!  Thank you everyone for your help. Now I just need to empty the champers bottle, so that I have a spare just in case.

You did check its holding pressure with the taps open and the pump off didn't you

Link to comment
Share on other sites

18 hours ago, monkeyhanger said:

I don't need to replace the pressure vessel after all. It seems to have lost most of its air for some reason. I repressurised it and after a few days, it seems to holding its pressure. Problem sorted!  Thank you everyone for your help. Now I just need to empty the champers bottle, so that I have a spare just in case.

One weak spot with these things is the Schraeder (car tyre-type) valve. I nearly replaced the pressure vessel on our house heating system until I realised it was the valve that was leaking. A new valve costing pence (well actually u found one lurking in the garage) fixed the problem and save me a packet.

 

To put it crudely, spit on the end of the valve and check for the formation of any bubbles. If it’s leaking, unscrew and replace.

  • Greenie 1
Link to comment
Share on other sites

29 minutes ago, nicknorman said:

One weak spot with these things is the Schraeder (car tyre-type) valve. I nearly replaced the pressure vessel on our house heating system until I realised it was the valve that was leaking. A new valve costing pence (well actually u found one lurking in the garage) fixed the problem and save me a packet.

 

To put it crudely, spit on the end of the valve and check for the formation of any bubbles. If it’s leaking, unscrew and replace.

I thought the cap was suppose to seal them

Link to comment
Share on other sites

4 minutes ago, ditchcrawler said:

I thought the cap was suppose to seal them

The old metal caps with a rubber washer were good, but not seen those for years.  That said, they were only to stop tires going soft between the monthly checks we had to do back then, I don’t think they would maintain pressure for a few years.......

Link to comment
Share on other sites

46 minutes ago, Chewbacka said:

The old metal caps with a rubber washer were good, but not seen those for years.  That said, they were only to stop tires going soft between the monthly checks we had to do back then, I don’t think they would maintain pressure for a few years.......

image.png.c7095675cb55d0ff43222ad4f8864656.png

Link to comment
Share on other sites

On 28/11/2020 at 23:10, ditchcrawler said:

You did check its holding pressure with the taps open and the pump off didn't you

Pump off, not sure if the taps were open. I left it a couple of days. I assume you are saying that with the taps closed, any leakage would be held in the system.

Link to comment
Share on other sites

On 29/11/2020 at 09:47, nicknorman said:

One weak spot with these things is the Schraeder (car tyre-type) valve. I nearly replaced the pressure vessel on our house heating system until I realised it was the valve that was leaking. A new valve costing pence (well actually u found one lurking in the garage) fixed the problem and save me a packet.

 

To put it crudely, spit on the end of the valve and check for the formation of any bubbles. If it’s leaking, unscrew and replace.

 

Crude ???

That was high tech when I started motoring.

Link to comment
Share on other sites

36 minutes ago, monkeyhanger said:

Pump off, not sure if the taps were open. I left it a couple of days. I assume you are saying that with the taps closed, any leakage would be held in the system.

You need to have pump off and taps open, otherwise you are measuring the water pressure not the inflation pressure of the vessel.

Link to comment
Share on other sites

1 hour ago, monkeyhanger said:

Pump off, not sure if the taps were open. I left it a couple of days. I assume you are saying that with the taps closed, any leakage would be held in the system.

If you don't depressurise the water side you have no idea of the precharge pressure 

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.