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Thread: Modding Supplies

  1. #1
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    Modding Supplies

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi,

    A quick one. Where does everyone get their copper pipes, rubber hoses, adapters, and other misc items used for modding their machines or repairs?

    Thanks

  2. #2
    Senior Member Dragunov21's Avatar
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    Quote Originally Posted by soccerstuie View Post
    Hi,

    A quick one. Where does everyone get their copper pipes, rubber hoses, adapters, and other misc items used for modding their machines or repairs?

    Thanks
    Bit of an open ended question; what are you specifically after?

    Fittings can be had cheaply on eBay, along with electronic parts.

    Hose can be had from well, hose suppliers (like purple pig) or from automotive stores if you're liking for certain types.

    Copper tubing you might try plumbing/ac supply places or, if you only need a little, you could try eBay or asking a fridgie if they had any scraps they'd let go for beer money.

  3. #3
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    Where would one get needle valves that were suitable for coffee machine applications?

  4. #4
    Senior Member Dragunov21's Avatar
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    Get on ebay, search "needle valves".

    Getting that kind of equipment locally will be substantially more expensive, especially if you don't know exactly what you're looking for initially.

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    Quote Originally Posted by Dragunov21 View Post
    Get on ebay, search "needle valves".
    Hi Dragunov21,
    Thanks. I have done that. Most are from China.

    Local ones are from automotive suppliers (probably also from China). Who knows what the lead content etc. etc. might be?!
    I would be curious to locate a food-safe needle valve supplier. Any ideas?

    Paolo

  6. #6
    Senior Member Dragunov21's Avatar
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    Search for "needle valve stainless" then (most brass contains lead, irrespective of origin). If you are dead set on food-grade, you'll probably want to go to a local gas plumbing place and ask them to advise you.

    You know that "China" isn't synonymous with "lead poisoning", yeah?

    What is the purpose of the valve? as far as I know food-safety takes into account a bunch of factors that may not be relevant to your end-use, including reactivity with substances that you may not need to worry about and smoothness of surfaces to prevent old product collecting (which isn't an issue if you're talking about water/steam taps)

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    Quote Originally Posted by Dragunov21 View Post
    You know that "China" isn't synonymous with "lead poisoning", yeah?
    Yes...well aware of that. The lack of disclosure of material, contents etc. is a potential minefield that I would prefer not to walk over in a food application.

    I am considering using a needle valve to meter introduced cold water into a hot water line.

  8. #8
    Senior Member Dragunov21's Avatar
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    If it's a cold water line I personally wouldn't be at all concerned about lead, but that's just my personal position and if it's for a customer that all goes out the window.

    Local food/dairy/plumbing industry suppliers will be the go, but you'll pay heavily for it.

    If you do find anything I'd be interested in hearing about it in case I ever need them...

    *EDIT* There are a few Parker instro valves on eBay at the moment in 316 Stainless.

    For example, searching "Parker 4M4Z-V4LK-SS Needle Valve 1/4" MNPT x 1/4" OD Tube 316 Stainless Steel" will give you something that might be suitable.

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    Thanks for the tip Dragunov21.... I have sent a message to an Australian supplier "NEEDLE VALVE 316 Stainless 1/4NPT-- BRAND NEW --- Marine Chemical Food" and am awaiting advice on max. temp. rating and physical dimensions.

    Cheers,
    Paolo

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    Can anyone clear up for me which would be the best way to go with a needle valve that has NPT ends....like they all seem to (NPT being National Pipe Thread...which is a tapered thread).

    I have had a look at the Coffeeparts "Fittings" section and noticed that there are no NPT fittings, only BSP (British Standard Pipe) fittings.....which are NOT tapered.


    There must be a reason why coffee machine do not have NPT fittings. Can anyone tell me what that reason might be?

    Is best practice simply a matter of getting the appropriate NPT to BSP adaptor for each end...or avoid NPT threads altogether?

    Paolo

  11. #11
    Senior Member Dragunov21's Avatar
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    https://www.ralstoninst.com/news/sto...nd-bspt-seals/

    Adapters should be available (just check before purchasing a valve)

  12. #12
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    Quote Originally Posted by Dragunov21 View Post
    https://www.ralstoninst.com/news/sto...nd-bspt-seals/

    Adapters should be available (just check before purchasing a valve)
    Interesting. Thanks again.

    I still wonder...."There must be a reason why coffee machine do not have NPT fittings. Can anyone tell me what that reason might be?"

    Maybe it's because USA (the home of the NPT) doesn't make too many coffee machines....would be really interested to find out what Slayer and Synesso use.

  13. #13
    Member Magyar0300's Avatar
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    Sometimes machines are made turn out well, copied extensively then standardised so that the parts are readily available or interchangeable and as most espresso machines are made in Europe I assume the BST type fittings were used.

  14. #14
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    Behmor Brazen - $249 - Free Freight
    American machines are a mix of NPT and BSP. They use whatever is available, and often these are italian origin (synesso and slayer use a faema style steam valve and Parker solenoids). Fasteners on the other hand are almost universally imperial. BSP is industry standard in Italy, presumably as the tooling at the foundries making fittings etc. was already BSP - it's been around for an awful long time.

    BSP and NPT are loosely interchangeable for espresso machine purposes, they have the same approximate threadform with (an infuriatingly) slightly different thread angle and pitch. If you use a brass BSP backnut on an NPT male fitting it will thread on OK, it only gets problematic when the fittings have to seal on the thread, or at much higher pressures than found in espresso machines.
    Paolo and Dragunov21 like this.



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