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expansion

  1. Ashley Bacon

    Water coming out of expansion pipe

    My rads wernt heating up. I checked for air lock and balanced. Quarter turn upstairs and all open down on lock shield. Central heating pump wilo gold 50 was noisy. I took a wild guess the pump wasn't circulating well. Purchased a wilo yonos which I was told is the direct replacement. Installed...
  2. Rob Foster

    Expansion Vessel - Not sure abouts its purpose

    Can somebody please explain the function of the expansion vessel on my heating. Is it to absorb the increased volume of water when its hot or/and to be a reservoir of water to top up the heating system when there are small drips Many thanks
  3. Scott_D

    Expansion vessel - not ugly

    Looking for a small additional expansion vessel for a heating system to go next to a combi as there are a few big column rads in the house. Ideally not something ugly :confused: so the standard red type is out. I have seen some online pictures of a compact almost like a squashed football but no...
  4. N

    Expansion vessel connector / pressure valve replacement

    Hi all. I need to replace a expansion vessel as it's leaking and and the same time I would like to relocate it within the same cupboard. I have done a fair bit of plumbing work over the years (good standard DIY'er) so the job itself looks manageable but I have a couple of questions. BTW, I plan...
  5. Scott_D

    Expansion vessel hose popped off

    The hose to the expansion vessel popped off on this logic+ combi I was fitting today. Been under pressure for a week. Fired up for an hour today then put into max to commission and it flooded the boiler. Ideal are coming out Thursday.
  6. Riley

    Expansion Vessel Siting

    Not strictly a gas issue here but need some advice in conjunction with an old Worcester 24i combi. Exp vessel has failed and will not hold a charge. Intend to fit an external vessel however the only accessible pipework is a pipe with an AAV on it in what was the old airing cupboard. Now I know...
  7. D

    Cordless expansion vessel pump

    Hi, I've been looking at cordless inflator for recharging ex. vessels. Does anyone use one and can recommend or advise to stay away from any particular ones? I'm keen to get something better than the foot pump I use at the min, but don't wanna chuck £100 at something that's useless. Thanks
  8. JLS

    Expansion vessel sizing question (because it's driving me mad)

    Hi all, I wonder if someone can explain something to me when it comes to expansion vessel sizing. On the basis of about 4% expansion at 100degrees one would think that for a 200l closed system an 8l expansion vessel would be sufficient, with a bit of a safety factor say 10l. Worcester...
  9. T

    Do I need an additional expansion vessel

    Before I call a plumber ......... My boiler (Gloworm 18sxi) slowly loses pressure and I'm having to regularly top it up. There are no obvious leaks anywhere and no discharge from the PRV as far as I can tell. Just reading through the manual for the boiler, it says that it has an internal 8...
  10. P

    Unvented expansion vessel pressure

    Plumbed the property back in 2004 and was back again to move both vessels to make space for a coat rack. No issues in 14 years apart from the big frost in 09/10 splitting a copper run to the ensuite shower and nearly flooding the property. Does anyone know the pressure...
  11. MrYates

    Glow worm Ultracom 30sxi expansion vessel replacement.

    After reading about problems and relating them to my situation it seemed that the expansion vessel could be faulty. I depressed the schrader valve inner. After a brief and insignificant exhalation, I gave it a pump. There was a gurgling bubbling noise from the EV. On re-testing for pressure...
  12. S

    Told boiler needs a new expansion vessel along with pressure relief valve - how much should this be?

    Hi We have a vaillant turbo max 824e rs combi boiler that has been serviced and we've been told that the boiler is found to be gas safe but is in need of a new expansion vessel along with a pressure relief valve. How much should be expected to pay for this (Coventry)? I have only one quote...
  13. Bogart

    Gunge in expansion tank.

    Had a quick loook in the CH feed and expansion tank as have been meaning to flush out the sysytem and refresh the inhibitor. Put in fair bit of Fernox F3 few weeks ago and due to one thing or another it is still in there.Anyway on looking into the tank saw a sort of clear coloured gunge sitting...
  14. F

    Megaflo Air Bubble not taking expansion

    I noticed today that the pressure gauge on my incoming water supply was showing over 5 bar and creeping up fairly rapidly until it went past 6 (that's the max it goes to) and continued. The Megaflo pressure reducing valve should be 3 bar, and this is normally what the gauge shows. The only thing...
  15. P

    Hot water pouring into the central heating expansion cistern

    Homeowner here trying to solve central heating problems. Just realized hot water pouring into the central heating expansion cistern from CH supply pipe vent, am I right in thinking that essentially the boiler is producing more hot water than it knows what do with and this is causing some to go...
  16. M

    Replacing expansion vessel on...

    A vailliant turbomax plus. This one has the flue that exits the back of the boiler. Is it easy to take this off the wall and put back together? Cheers
  17. M

    Dripping valve on domestic expansion vessel 4 year old system

    I'm hoping someone can please help as I'm struggling to find a solution I've a 4 year old house and the system was fitted as new. It has a large water tank and an expansion vessel however every morning I'm woken up to the sound of water dripping through this fitting as shown below. This value...
  18. M

    Expansion tank boiling - PLEASE HELP!

    I moved into a 1980's house a few weeks ago. The house has a Ideal Heat 30 boiler in kitchen with cylinder in airing cupboard and tanks in loft. Under boiler there are 3 motorized valves, 2 for heating and 1 for HW. The 2 heating valves are wired together into stat (as there arent seperate zones...
  19. K

    Fill and expansion wrong way around causing air ingress?

    I am receiving conflicting advice on whether the fill and expansion pipes on our new system are the wrong way around and the cause of air noise at the pump weeks after installation as well as the magnaclean keep gaining air. We frequently get air bubbling noise in the pump even after repeated...
  20. B

    Expansion tank - charging and system pressure

    Hi all. This is my first post, and I'm a homeowner and not a heating engineer or plumber, so apologies if my knowledge is a bit off. To give a bit of history we had a problem with water hammer in our pipes so had a pressure reducing valve fitted under the kitchen sink. The local water company...

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