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Thread: Wanted: Boiler insulation

  1. #1
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    Wanted: Boiler insulation

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi,
    Does anyone have any foam insulation material available? Armaflex HT or similar.

  2. #2
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    Re: Wanted: Boiler insulation

    How much are you after?

  3. #3
    Senior Member Lovey's Avatar
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    Re: Wanted: Boiler insulation

    The topic of the Armaflex boiler insulation has been mentioned more than a couple of times now.
    Is this item something that Andy might consider adding to the Beanbay at some stage? 8-)
    Sorry to go a bit OT.

  4. #4
    Senior Member GregWormald's Avatar
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    Re: Wanted: Boiler insulation

    Im currently looking at something for my 2 litre Diadema boiler--but havent found what I want yet.

    Greg

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    Re: Wanted: Boiler insulation

    I have a two group Rancilio so I guess I will need about 1 square m?

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    Re: Wanted: Boiler insulation

    Might have that spare will have to check. ;)

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    Re: Wanted: Boiler insulation

    Thanks moto.

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    Re: Wanted: Boiler insulation

    I have a project in the works so I will get to it this weekend and see how much is left over and I will let you know after the W/e.

  9. #9
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    Re: Wanted: Boiler insulation

    Hey moto coffee,
    did you insulate your boiler on the weekend?

  10. #10
    Senior Member GregWormald's Avatar
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    Re: Wanted: Boiler insulation

    Hi all,

    When I finally had a good look at my boiler, I realised that foam insulation would be difficult as a number of the pipes run quite close (mm) to the boiler, and I really didnt feel like re-routing everything on a brand new machine.

    My local kiln insulation supplier was able to provide some offcuts of spun ceramic insulation (good to 1500C). These were mounted in a pattern of high and low on some aluminium foil insulation and fixed, with some difficulty and no neatness, around the boiler and underneath the existing pipework. I did not insulate either the top of the boiler or the bottom as both have too many connections to make it practical or easy.

    The result was that the pressurestat now cycles on for 4 seconds every 75 or 80 seconds rather than 4 seconds ever 50 seconds. Its not as impressive a change as I was hoping for, but it will have to do. And I guess I really shouldnt have expected better than that--its about a 60% improvement.

    Sorry, no pics--as I said--it is not pretty!

    Greg

    ps--the offcuts cost me $10 and I have lots left--if anyone in Adelaide wants to try it, PM me. The aluminium insulation was also a offcut from my local air-con installer--it was free.

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    Re: Wanted: Boiler insulation

    Sorry Ralph, no go on the weekend, my wife decided to organise a social weekend so the machine was on most of it. Not going to insulate a hot machine. ;D Will have a close look this week and estimate how much I will have left and then I can let you know if I am going to have much left.

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    Re: Wanted: Boiler insulation

    Quote Originally Posted by 25100705350D100F030E06620 link=1245561908/9#9 date=1246313394

    Sorry, no pics--as I said--it is not pretty!

    Greg

    ps--the offcuts cost me $10 and I have lots left--if anyone in Adelaide wants to try it, PM me. The aluminium insulation was also a offcut from my local air-con installer--it was free.
    Hey GW

    could we have a picture of the "product" you are using, or one of the "sandwich" you made. (left overs)

    i am about to rebuild a machine and was going to insulate along the way and looking for ideas.

    I would also be interested in some A / HT as well if any pne has some spare or group buy etc


  13. #13
    Senior Member GregWormald's Avatar
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    Re: Wanted: Boiler insulation

    Hi Maheel,

    If you want to see the product, just go to the wifes (or girlfriends) make-up area and look at a bit of cotton wool. Its exactly the same except made from spun ceramic.

    Its much finer than glass wool, and not quite as itchy--although I recommend rubber gloves.

    The roll I have is about 2-3 inches wide and about the same thick. It separates in layers quite well. I reckon I must have about 10 feet of it, and I have used about 2, separated into layers of about 20-30 mm.

    Greg

  14. #14
    Mal Dimal's Avatar
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    Re: Wanted: Boiler insulation

    Ceramic insulation materials are very hazardous if some of the fibres are inhaled, similar outcomes to those poor buggers who inhaled asbestos fibres. You need to observe stringent personal protection including physical barriers so as to ensure no particles are inhaled either during the installation or afterwards....

    Much better to opt for bio-soluble long strand fibreglass materials for this sort of thing, youd hate for you or your family to become exposed to this stuff...

    Mal.

  15. #15
    Super Moderator Javaphile's Avatar
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    Re: Wanted: Boiler insulation

    Ill second Mals comments. Spun ceramic insulation is certified for use only in fully enclosed/encased/stabilized applications. While its a great insulator it is not your healths friend. :(


    Java "Dont breathe glass!" phile

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    Re: Wanted: Boiler insulation

    I have been toying with the idea of trying some of this Glareshield insulation on my boiler.
    http://www.air-cell.com.au/pages/glareshield.htm
    Just so happens that I have a roll of it lying around for underfloor insulation. Cost is approx $267 a roll.

    Glareshield is mostly polyethylene and some aluminium foil.
    According to the MSDS its boiling point is 145 deg C.
    http://www.air-cell.com.au/pdf/broch...-CELL_MSDS.pdf
    Armaflex HTs is 150 deg C.

    Is 145 deg C enough of a safety margin for installing next to a boiler for say 4 hours a day?

    I tried contacting Air-Cell technical support but havent had a response and suspect they wont answer.
    Thx
    C

  17. #17
    Mal Dimal's Avatar
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    Re: Wanted: Boiler insulation

    Behmor Brazen - $249 - Free Freight
    Hi again mate....

    Unfortunately, youre not comparing apples with apples. The MSDS for your linked material is its actual Melting Point, not its maximum operating temperature which for Armaflex, is 150C as you say. The safe maximum "continuous" operating temperature for the Glareshield is considerably less than its melting point.

    Either try to buy some Armaflex as end pieces from used rolls or maybe knock up a Bio-Soluble Fibreglass blanket to wrap around your Boiler... Very safe and very effective... :)

    Mal.



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