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vessel

Recent contents Top users
  1. J

    Advice combi boiler plumber says can't fix expansion vessel/access it?

    Hi there, I was wondering if anyone could advise if I should get a different plumber for a 2nd opinion. Basically, my combi boiler is in my attic. It is overpressurised at the moment and the overflow pipe always drips. I had a plumber round, he seemed good and honest and knew the neighbour so...
    • James Croft
    • Thread
    • boiler combi combi boiler expansion expansion vessel plumber vessel
    • Replies: 11
    • Forum: Boilers
  2. A

    Not able to put pressure in vessel

    Had a main water leak lately and fixed it it had been there for a few days and the boiler wasn't working after the repair I tried to pressurize the vessel in the hot press but couldn't pump air in I took out the valve stem and inserted a blunt stick in but it wouldn't go in seems like it's...
  3. R

    Hot Water Tank Expansion Vessel Question

    Am I correct in saying that the capacity of an expansion vessel as written on the appliance data label is the capacity of the water compartment alone and excludes the air compartment capacity? Thanks
    • RayPooley
    • Thread
    • expansion expansion vessel hot water tank vessel water water tank
    • Replies: 18
    • Forum: UK Plumbers Forums
  4. C

    Expansion vessel for potable water for a combi boiler

    Hi,a customer of mine has a combi boiler and they don't have an expansion vessel for the potable hot water supply. I know there's an expansion vessel for the closed-loop central heating circuit but I doubt the combi boiler has one for the potable water. I was thinking to put one in the airing...
    • CLC plumbing
    • Thread
    • boiler combi combi boiler expansion expansion vessel vessel water
    • Replies: 18
    • Forum: Boilers
  5. M

    Pressure gauge showing zero on red expansion vessel

    New to this so please bear with me! The pressure gauge at the bottom of my red expansion tank is showing zero. However my radiators are getting hot and boiler seems to be operating okay. I did bleed a bathroom towel rail yesterday which only had heat at the very bottom. Not a massive amount...
    • Macca4
    • Thread
    • expansion expansion vessel pressure vessel
    • Replies: 2
    • Forum: UK Plumbers Forums
  6. J

    Pressure relief valve and pressure vessel

    Hi, I was just wondering if anyone on here has an answer to a question for me. Why is a pressure relief valve on an unvented electric hot water tank located on the cold water intake rather then the hot water out let? And also does anyone have any ideas why some unvented hot water tanks comes...
  7. N

    Ferolli expansion vessel

    I need a new expansion vessel, problem is I've got a optima 901 and the flue goes up about a foot and then into the back wall and the vessel is at the back, it's one of the round ones, I've got to get a engineer into do it, I'm assuming that they take the flue out and lift it from the back...
  8. C

    Expansion Vessel Pressure

    Hi, Should an expansion vessel pressure match the pressurisation unit? For example, if the pressurisation unit is set at 1.2 bar should the expansion vessel be set at 1.2? Many thanks
  9. K

    No water sound when turning filler tap by expansion vessel.

    Have an Ariston unvented hot water tank in airing cupboard with the red and white expansion vessels and a filler tap. As advised years ago on these forums when I hear that sound that the central heating water needs topping up I usually wait until cold so the gauge goes to zero and top up to 1...
  10. M

    New expansion vessel on water system - is pressure too high?

    Hello all, I'm currently in Ireland and in a small cottage where the plumbing system has me scratching my head a bit. When the place was done up the builders decided that the tank in the loft was no longer needed and put a tank out back in a small extension where ALL (well, except for the cold...
  11. S

    Vaillant Ecotec Plus 832 Expansion Vessel

    Hi Guys, Had a quick question regarding expansion vessel on a Vaillant Ecotec Plus 832. Was servicing the boiler and upon attaching hand pump to vessle after having drained the boiler, returns and flows isolated and drain off on boiler open, the vessle showed 1 bar charge. Was wondering why...
  12. S

    Hi all our boiler has just had a new expansion vessel fitted but pressure is still going to 2.9 bars when using central heating . Is this normal? Than

    Hi All our boiler has just had a new expansion vessel fitted bit the pressure is still rising to 2.9 bars . Is this normal ? Many thanks
    • Sangita
    • Thread
    • boiler central central heating expansion expansion vessel heating pressure vessel
    • Replies: 5
    • Forum: Boilers
  13. C

    What expansion vessel should i order for Boiler

    Hi, Currently have a Potterton Promax Combi 28 HE A boiler and looking to replace expansion vessel due to issues with it. Looking to make sure i get the right part for it Found this part online but it says it will Fit a Promax Combi 28 HE Plus A,Is the HE plus A and my boiler HE A the same...
    • CWilson
    • Thread
    • boiler expansion expansion vessel vessel
    • Replies: 1
    • Forum: Boilers
  14. M

    System boiler kw sizing and expansion vessel

    Hi, After a bit of a saga with my plumber, I need to chose boiler size as soon as possible, the plumber is not going to do any heat loss calculations or do anything to work out accurately so I am on my own. Appreciate this is not what should be doing but after some level of finger in the air...
    • meakinsl
    • Thread
    • boiler expansion expansion vessel system vessel
    • Replies: 16
    • Forum: Boilers
  15. J

    Expansion like vessel

    Currently installing air to water and underfloor.theres this expansion like vessel with two 3/4 iron male threads on top and bottom of it with no bladder on between.its goes before the primary flow hits the cylinder and underfloor manifold.anyone know of its function??we don't do alot of air to...
  16. N

    Expanssion Vessel - water coming out

    Hi, I've got a Ideal Logic 30 - I was cleaning out the trap as it sometimes gets clogged up and tried the pressure on the expansion vessel and only water came out (boiler was switched off but not drained) is this normal or do I need to call out a plumber to change the Expansion Vessel? edit...
  17. M

    Dhw expansion vessel combi boilers

    Most manufacturers ask for a small dhw expansion vessel on combi boiler installs if a water meter is fitted as this stops the expansion of the heated hot water from expanding in to the mains. But if there is a large distance between the boiler and the water meter is one not needed? Like when...
    • Matt0029
    • Thread
    • boilers combi expansion expansion vessel vessel
    • Replies: 3
    • Forum: Boilers
  18. M

    Expansion vessel pre charge

    I have a 35litre central heating expansion vessel that has come with a pre charge of 1.5 bar. Does this sound a little heigh? As the pressure in the system will have to rise above 1.5bar for it or absorb any expansion? Thanks
  19. cr0ft

    Sealed System Additional Expansion Vessel Needed?

    Hi all, As a few of you will know, I'm a bit rusty on the tools now and was wondering how to tell whether an additional expansion vessel is needed. In short: - Have moved into a house with a sealed heating system, system keeps losing pressure but no obvious leaks. It's heated by a Greenstar...
    • cr0ft
    • Thread
    • expansion expansion vessel system vessel
    • Replies: 4
    • Forum: Plumbers Arms
  20. P

    Pressure vessel vales keep failing ?? at a loss.

    Im having problems with a pressurised hot water system. Keep getting leaks every 4-8 months as the pressure valve fails. The first valve failed after approx. 4 years from installation. Since then (another 4 years) Ive replaced the vessel 3 times, its had had vales cores 5 times, and Ive put...
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