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Thermal expansion tank lifespan

  • 06-10-2018 9:23am
    #1
    jeffk
    Registered Users, Registered Users 2 Posts: 5,879 ✭✭✭


    Got one put in as part of solution of issues with heating two years ago and said in two years or so need to change it

    Pricing around and been told E170(minus some bottle of fluid that is meant to help circulation) to supply and fit one

    Does it only last two years? I see six years on quick google

    Is that around the average price?

    Thanks


Comments

  • #2
    agusta
    Closed Accounts Posts: 1,590 ✭✭✭agusta


    can you post a picture,how do you know its not working..,


  • #3
    jeffk
    Registered Users, Registered Users 2 Posts: 5,879 ✭✭✭jeffk


    agusta wrote: »
    can you post a picture,how do you know its not working..,

    o6i5v9.jpg

    Its working, but the installer said after two years you need to change it, another installer wants to put some safety value on it


  • #4
    John.G
    Registered Users, Registered Users 2 Posts: 3,623 ✭✭✭John.G


    jeffk wrote: »
    o6i5v9.jpg

    Its working, but the installer said after two years you need to change it, another installer wants to put some safety value on it

    From relation,s experience, you can expect => 6 years, you can do a very easy basic test yourself by removing the plastic end cap and pressing in (briefly) the
    schrader valve with your finger nail, if air comes out its more than likely that its ok, if water comes out then it needs renewal, if no air or no water, then the system must be drained down and the vessel must be pre pressurised to ~ 1.0 to 1.5 Bar. If no air or water, or if water comes out you may find that the boiler safety valve has also been lifting and discharging water as there is no place for the expansion to go to.


  • #5
    jeffk
    Registered Users, Registered Users 2 Posts: 5,879 ✭✭✭jeffk


    John.G wrote: »
    From relation,s experience, you can expect => 6 years, you can do a very easy basic test yourself by removing the plastic end cap and pressing in (briefly) the
    schrader valve with your finger nail, if air comes out its more than likely that its ok, if water comes out then it needs renewal, if no air or no water, then the system must be drained down and the vessel must be pre pressurised to ~ 1.0 to 1.5 Bar. If no air or water, or if water comes out you may find that the boiler safety valve has also been lifting and discharging water as there is no place for the expansion to go to.

    That's great thanks, I'll check and see


  • #6
    agusta
    Closed Accounts Posts: 1,590 ✭✭✭agusta


    It does not need to be changed.When your getting the boiler serviced annually,the pressure in the vessel can be tested.any yes they normally last alot longer than 6 years


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