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vessel

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  1. S

    Understanding CH pressure vessel settings

    I have a Valliant regular boiler. Earlier in the year I had several radiators replaced and a pressure vessel fitted in place of the FE tank. The red pointer is set to 0.75 bar and the black pointer is at about the same point. My questions are... Is 0.75 the correct setting? What should the...
  2. I

    Expansion Vessel Vibration

    First post after a lot of browsing and hoping for some insight into an on-going issue. I have a Glenhill unvented cylinder setup on my house. Installed 5 years ago (I’ve lived here for a year). Backstory: The expansion vessel was replaced in November as the last one had started to leak. No...
  3. J

    European / international water heaters, no expansion vessel

    I've seen and heard about this a couple of times. When installing an un-vented water heater some parts of the world seem to fit an expansion valve and just allow it to blow off each time the water is heated. No expansion vessel is fitted on the incoming pipe work, they either fit it to a...
  4. Riley

    Exploded expansion vessel

    From the start I will say this is not installed by me. I was called out last night where an expansion vessel on an unvented cylinder has rusted through and gone pop. Serious flooding etc. Went over and made safe and I’m now trying to source replacement parts. I note that rather than using...
  5. M

    Expansion vessel change on a viessmann 200wv

    hi guys. I’m after some advice on replacing a viessmann expansion vessel if anyone has any? I’ve never worked on one or installed one. I don’t normally do part replacements at all if I’m honest so any help would be appreciated please. Cheers
  6. M

    Pressure vessel pump??

    hi guys. What pumps are most of you using to check/pump expansion vessels? Cheers all
  7. Wetbandit

    Does this expansion vessel need supporting?

    Just noticed this on a job and wondered how dangerous it is if any of you knowledgeable people can tell me if it's supposed to be supported? Cheers wet bandit
  8. R

    Expansion Vessel Combined Boiler

    Got a weird one, no water on on valve and tested integrity using LDF and all fine. Drained down system and left drain off open and pumped to around 1 bar. It’s not holding any pressure but not showing any other of the normal symptoms of a broken membrane. My thoughts are vessel but I’m not...
    • richard978
    • Thread
    • boiler expansion expansion vessel vessel
    • Replies: 4
    • Forum: Boilers
  9. D

    Adding a second Expansion Vessel?

    I was at a job looking at an unrelated issue when the lady mentioned her blow off keeps running outside. Apparently the last plumber replaced expansion vessel(and checked the precharge was 3bar) on the cold feed into the cylinder, 3bar pressure reducing valve and 6bar blow off in the hope to...
  10. M

    Worcester Greenstar Expansion vessel

    Hi, Serviced a boiler today that was over pressurising when heating up, so thought it would be a simple case of drain down and re-pressurise the vessel. tried that and found that the vessel would not take any pressure as if the valve was blocked, I removed the schrader valve but no change...
  11. A

    HE24 Expansion vessel location

    Hi, Can anyone tell me where the expansion vessel is located on an Ideal HE24 boiler, please? I have an issue where the pressure drops when the heating has been on because the water is leaking from the outside pipe and some other threads I've read advise to check for pressure in the vessel but...
  12. MikeJhn

    Flat 12L potable expansion vessel

    I can find lots of the above for Boiler installation, but assume for potable water they would be different internally (lined) due to possible cross contamination to the drinking water, anyone know where I can find one?
  13. D

    Which pump, pressure vessel?

    Im looking to buy a pump pressure vessel (like a garden sprayer) to pump inhibitor into radiators. I’m unsure which one to go for. Has anyone any experience of using one for this purpose and Can anyone recommend a good one please? Dan :)
  14. Inverness

    Vokera linea24 replace expansion vessel?

    hi guys, any one hot experience in replacing the expansion vessel on a vokera linea ? It has to be a striaght swap. Experience and thoughts appreciated.
  15. B

    ** Heatline Monza 28 expansion vessel **

    I had a Heatline Moza 28 boiler fitted around five years ago. It had some pressure issue from very first year. I used to top it up manually. Then last year, it stopped working altogether and boiler engineer had to pump up its expansion vessel. my boiler worked fine for whole year. Now it am...
  16. H

    Expansion Vessel Upside Down?

    Hi, Has this expansion tank been installed upside down? - The cold water expansion tank is install this way as well... Or is there something special about the configuration that I haven't understood? Surely air gets trapped with the expansion tank fitted this way? I still have noise in my...
  17. Steve weightman

    Expansion vessel in a domestic house

    Any reason why this cold water expansion vessel would be found in a domestic house it's massive
  18. J

    Expansion vessel appears ok, but boiler operating pressure at 3 bar.

    Hi. It would appear that the expansion vessel is ok, and yet the boiler pressure is operating and exceeding 3bar. The PRV does leak before 3 bar and I know needs replacing, but what could be causing the high operating pressures. Thanks
    • jrtrrror
    • Thread
    • boiler expansion expansion vessel pressure vessel
    • Replies: 12
    • Forum: Boilers
  19. D

    Unvented Cylinder Expansion Vessel - advice sought

    Hi, I am a homeowner, I had a new unvented cylinder (OSO DC 300) fitted in August, and had a small problem yesterday with the pressure valve dumping water and making a lot of noise. Eventually this was resolved. However, during my conversations with plumbers it appears that I have a red...
    • David C
    • Thread
    • cylinder expansion expansion vessel unvented unvented cylinder vessel
    • Replies: 21
    • Forum: Central Heating Forum
  20. R

    Expansion vessel on a flexi - illegal?

    Saw a photo a customer showed me of what seemed to be a flexi installed on an expansion vessel serving a small electric water heater by someone he found who was cheaper than me. I say 'seemed to be' because I'm not sure from the angle of the photo whether the flexi was attached to the vessel or...
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