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Thread: TXV Replacement

  1. #14
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    All true except the no mess part.
    Quote Originally Posted by HellGato View Post
    HOT DAM Heat PUTTY

    Completely stops heat transfer down ferrous or non-ferrous pipe
    Easily molds like clay to any shape you need
    Can be used over and over
    Removes quickly and cleanly after each application
    No drip, mess or residue
    Reusable
    Simply stores in a 3/4 lb container



    There is another brand

    GOSS Heat Barrier PUTTY too..

    got it at Fergusons

    Sent from my SM-N910W8 using Tapatalk

  2. #15
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    Thread Starter
    I'll be replacing one on a process chiller soon. It has a 1-1/8" outlet and the outlet is pointed down. Not much room to work a torch either. I'm afraid that wet rags will allow water to drip down onto the braze joint. I might give the Hot Dam a try. I have used a clear jell before, but wet rags does a better job. Thanks for the replies.

  3. #16
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    I am not impressed with the clear gel. Try the Hot Dam.

    Sent from my SM-N910W8 using Tapatalk

  4. #17
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    Wet rag, in bucket of ice water if possible. Have other rags ready to help dissipate heat when finished brazing. Never had a problem.

  5. #18
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    I tried the hot dam, but went back to rags. I cut them into strips and wrap a couple of layers. Point the torch away, get done fast, douse the valve.
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    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
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  6. #19
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    I use Kimwipes - soak them fold into long strips- works much better then an actual rag, as you can wrap a few times and they sort of hold to the part better


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  7. #20
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    My rags are boxes of t-shirt discards from a mill.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

    AOP Forum Rules:







  8. Likes hvacmatt123 liked this post.
  9. #21
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    Always wet rag. On valves and such the cosmetics of the braze is outweighed by the ability to hit it with as much heat for the shortest amount of time possible. But just remember. If you can cheap and get away with new guts or a power head, try that route

  10. #22
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    I've been using Cool Gel for many years now and I have never had any problems with it . The key to its use is to be extremely liberal with it and literally gel the hell out of it . With the advent of Poe oil , I always worry about the wet rag approach .

    The other key is oxy atctelyne. It's a must for these types of jobs.

    One final thing . I usually use Stay Brite # 8 on heat critical components and where the spaces are tight. If you learn how to use it properly , it works wonders !
    The only place you don't want to use it. is places of high stress or vibrations . I also avoid its use on condenser coils.

  11. #23
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    Unless there is no room to do otherwise I Staybrite TXV's in so I can use a smaller torch and lower heat. Yes; I have taken them apart to install - especially larger valves. But well wrapped tightly in strips of nice cloth - like terrycloth - and you can even braze them in safely. Cut narrow strips so you can really mummy-up the valve and soak them wet by pouring water over.

    Use a big tip so you can work fast, point the flame towards the copper and away from the valve, and you'll be fine.

    PHM
    -------


    Quote Originally Posted by hands View Post
    I was just wondering how most of you replace TXV's. If it has a removable power assembly, do you remove it before brazing in the body or do you just wrap up the whole valve with wet rags?
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  12. #24
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    Gel and wet rags. But I think I might try some of that putty - gel is messy and hard to stick exactly where i want it to stay.
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    http://www.theamericanconservative.c...nitys-decline/

  13. #25
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    Well, it looks like I won't be replacing the TXV myself. Sporlan had to make the valve I needed with a two week lead time. The day it's suppose to arrive, I'm being pulled out to work at another job site for two weeks or so. I guess someone else will have the fun of changing it.

  14. #26
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    What is the oddity about the ordered-valve?

    If it's just capacity you can always parallel two smaller valves.

    PHM
    -------



    Quote Originally Posted by hands View Post
    Well, it looks like I won't be replacing the TXV myself. Sporlan had to make the valve I needed with a two week lead time. The day it's suppose to arrive, I'm being pulled out to work at another job site for two weeks or so. I guess someone else will have the fun of changing it.
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

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