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Thread: threads on MAV and O2-injection

  1. #1
    RBW Member NewRebiKai is an unknown quantity at this point NewRebiKai's Avatar
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    KISS Classic #112

    threads on MAV and O2-injection

    Hello everybody,

    I want to change the fittings on my CK #112 from swagelok to milflex hoses.

    Now I have to know which kind of thrreads are in the old style MAV??

    Also I don´t know, which thread is in the KISS head for the O2 injection.

    Thanks for your response

    Kai

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    RBW Member edenfeldt will become famous soon enough edenfeldt will become famous soon enough edenfeldt will become famous soon enough edenfeldt's Avatar
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    Re: threads on MAV and O2-injection

    Hi.

    The treads are 7/16-20 male and female. I have solved the problem by changing to swagelocks push on connections instead.

    Here is some pics:





    Swagelok push-on 7/16-20 female, 7/16-20 male to 1/8 NPT male.

    Part.nr

    SS-PB4-TA4
    SS-400-NFSET

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    Re: threads on MAV and O2-injection

    Kai,
    The head port/fitting threading is 1/8"npt. It's the same on the stainless MAV. To change to Miflex hoses, you need to get the new plastic MAV with the scuba fittings.
    Best
    Philippe

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    Re: threads on MAV and O2-injection

    I have the Mk2 flat sided MAV on CK101 and tried to find out if there were any adapters to take UNF hoses but drew a blank.

    I think the MAV has 1/16"NPT threads although someone said they were 1/8". I am not even sure if there is enough space between the holes to take UNF hoses. I should check since I now have both.

    The Jetsam kit includes a new adapter for the head (I think it's M&J Omniswivel) to take a UNF Scuba hose.

  5. #5
    RBW Member billyf is an unknown quantity at this point billyf's Avatar
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    Re: threads on MAV and O2-injection

    The Head is a 1/8 NPT
    The Ports on the MAV are also 1/8 NPT
    You can get the 3/8-24 to 1/8-NPT elbow from jetsam and you’ll need two 9/16-18 to 1/8-NPT adapters for your MAV you can find these at golemgear.com
    From Jetsam “ELBOW 90 Degree on scr head $50.00 CDN”
    The adapters from golemgear are $12.50 USD each
    http://golemgear.com/p-455-18-npt-male-to-916-18-male-adapter.aspx
    you might want a LP swivel for the reg because the SS hoses use an elbow which will be removed.

  6. #6
    RBW Member NewRebiKai is an unknown quantity at this point NewRebiKai's Avatar
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    KISS Classic #112

    Re: threads on MAV and O2-injection

    Thanks, now I can start
    ...I love this forum...
    ...There is no easier way to get good answers...

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