3/8 Ball Valve Rubber Internal Parts?

  1. Pollys13

    Pollys13 Member

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    I don't think 3/8 ball valve has rubber parts inside, that could be damaged when removing with butane torch. Just thought I'd ask to be sure:)
    Cheers.
     
  2. 123hotchef Member

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    it has a rubber washer dont it and nylon slider?
     
  3. Pollys13

    Pollys13 Member

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    Is one of this type.
     
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  4. WorkshopChris

    WorkshopChris Forum Supporter

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    Often PTFE seals internally.
     
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  5. Pollys13

    Pollys13 Member

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    Are these likely to have been damaged by using butane torch to get them off
    Do you they make actual PTFE internal seals, is this what you mean? Not PTFE gas tape?
     
  6. WorkshopChris

    WorkshopChris Forum Supporter

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    Yes, the ball often sits in a machined PTFE part to seal its not a metal to metal design.
     
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  7. armalites Member

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    4,344
    Herefordshire
    Personally i would say if you are using heat to get it off then just fit a new one. They cost a few quid
     
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  8. Pollys13

    Pollys13 Member

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    Ah, ok, so even if the valve appears to open and shut correctly. The heat could, would have damaged the seal and wouldn't find that out until I run air through them? If so will do as armalites suggests and buy replacements.
     
  9. brightspark

    brightspark Member

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  10. jimi_boom Member

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    LAncaster
    Most cheap ball valves have soft seals, in something like that they will be PTFE or some sort of Nylon. the spindle seal wont necessarily be a soft seal its likely to be a graphite seal so that static cant build up on the ball itself.
    I used to design valves so in my opinion if you've had to heat it up then its going to be better to replace it, PTFE ball valves are likely to be good to 150 degree but I wouldn't risk it.
     
  11. winchman

    winchman Member

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    Some you can buy kits for but I suspect a new valve wont be much
     
  12. Pollys13

    Pollys13 Member

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  13. Pollys13

    Pollys13 Member

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    Not a lot for full flow, bought several to cover my needs.
     
  14. Pollys13

    Pollys13 Member

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    So if a seal did go because of using heat, how would the ball valve leak?
     
  15. brightspark

    brightspark Member

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    probably just pass air when closed
     
  16. Pollys13

    Pollys13 Member

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    ok
     
  17. graffian

    graffian Seer unto the end of his beard

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    The ones I have taken apart have a pair of O rings sealing the ball.
     
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  18. Pollys13

    Pollys13 Member

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    328
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    Thanks.
     
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