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vessel

  1. V

    Advice on external expansion vessel.

    Hi all, The expansion vessel on my Baxi Combi 133he plus has died (water from the schrader valve) and I want to fit an external vessel, teed into return pipe via the filling loop. I'm confident at doing the work as have good DIY skills and plumbing knowledge but my wife is scared that it's a...
    • Vic Rattlehead
    • Thread
    • expansion expansion vessel vessel
    • Replies: 24
    • Forum: Central Heating Forum
  2. D

    Advice needed - expansion vessel charge

    Hi there, was just looking for a bit of advice about my expansion vessel. My have a Suprima condensing boiler with expansion vessel - filling loop. The system loses 1 bar of pressure in 12-14 days. I have checked thoroughly for leaks and can't find anything, even a small one. I thought I would...
  3. S

    Expansion Vessel Size

    Hi I have a Grant 26-36 S Pro boiler fitted with underfloor heating and DHW. The system was fitted about 3 years ago (not by me) and has worked well since then, only issue is topping the system up every now and then. Pressure has never fallen sufficiently to stop the system working I have just...
  4. D

    Re-pressure expansion vessel / glow-worm fuelsaver

    Hi folks, I bled a radiator, then checked the pressure gauge on the expansion vessel and it reads empty. I've no idea how to top it up as I can't find any taps on the pipes or boiler. Does it also need air pumped in? I've attached a photo of the system. If someone could advise what to do I'd be...
  5. K

    Rusting solar expansion vessel

    Hi all, I popped into see a job today with a problematic solar system. 12 evacuated tubes Twin coil cylinder in the loft, along with pump station and expansion vessel. System not circulating but pump running, I checked the expansion vessel and saw it was badly corroded and leaking Goooo...
    • Kev the gas
    • Thread
    • expansion expansion vessel vessel
    • Replies: 6
    • Forum: Central Heating Forum
  6. F

    Pressure Vessel?

    About six years ago I had three new bathrooms (each with a seperate shower cubicle) installed; one has a rain shower which requires higher pressure than a normal shower. Our mains water pressure was terrible so I had a Megaflow cylinder installed and the plumber said that we needed some kind...
  7. R

    Do I need an external expansion vessel for my Vaillant system?

    Hello all I am new to this forum and I do not want to undertake any work myself. I just want my heating system to work more effectively. Apologies for such along first post but I see from reading other posts that giving as much detail as possible seems to lead to very constructive advice. I...
    • retired man
    • Thread
    • expansion expansion vessel system vaillant vessel
    • Replies: 24
    • Forum: Central Heating Forum
  8. I

    Advice on re-filling expansion vessel

    Hi, Last time the tundish started dripping on my pressured system, the plumber re-pressurised the expansion vessel to 3bar as per the label on the tank and all was fine for say 1-2 years before the dripping started again. This was as before, about 10 minutes after the boiler fired up to heat the...
  9. J

    expansion vessel

    hi guys vokera compact combi boiler is it poss to remove and replace expansion vessel without removing boiler from wall as stated in vokera manual cheers john. :cry_smile:
  10. C

    commercial expansion vessel

    Hi I'm a domestic engineer and I'm now moving onto commercial work I have leaks coming from 3 big expansion vessels and I think they are leaking from the top were 1 has a leaking blank end 1 has a quarter turn valve and one has nothing on it. As there is water there at all I believe the...
  11. R

    Pipe size going into expansion vessel on sealed heating system

    Hi all, Ever since I was an apprentice plumber going back 20 or so years when we installed sealed heating systems - We always made sure that 22mm pipe would go into the expansion vessel ie do away with the actual fittings that come with it which were 15 mm and put our own 22mm female to copper...
  12. M

    Expanion vessel has water in, but still functions properly.

    Hi, today i had to remove the expansion vessel on my oil combi boiler inorder to change a auto air vent which is leaking, i took the opertunity to rechardge the expansion vessel so i drained the system then the expansion vessel out (the water side) and discoverd there was still some water in...
  13. T

    Replacing expansion vessel on a unvented hot water only storage system (package type)

    Hi, I have a failed expansion tank (which is full of water and has 0 bar pressure) on my unvented hot water storage system. Currently the pressure relief valve is venting water to the overflow. This diagram matches what I have: I want to try and do the job myself if possible but it seems...
    • thebigred
    • Thread
    • expansion expansion vessel hot water replacing system unvented vessel water
    • Replies: 15
    • Forum: Central Heating Forum
  14. M

    can i change vessel on lpg boiler?

    Evening guys. I've been called by a customer to see if I can repair her boiler. By the symptoms described it sounds like the pressure vessel is knackered. Only thing is the boiler runs on lpg. Probably a stupid question but can I legally change the vessel or am I not allowed to take the...
  15. D

    Digital vessel Gauges

    Can anyone recommend a decent digital expansion vessel gauge? Cant seem to find one anywhere. Iv been using my bike pump this week and its not the most accurate. Thanks
  16. Reg Man

    Which Unvented hot water vessel?

    I am doing my homework on choosing which unvented hot water vessel to use. I know what capacity I require, its now down to choice of manufacturer. These are the following I have looked at: Fabdec Excelsior, Gledhill, Heatrae Sadia Megaflow ECO, Telford Tempest, Vaillant Unistar, Santon Premier...

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