I was wrong about it not listing the material, it does say it's brass, so it is almost certainly leaded brass with a nickel coating neither of which are safe for food.
On Sunday, January 10, 2021 at 7:58:31 PM UTC-5 Brian wrote: > I do not have familiarity with that part in my machine, but i do work with > those kinds of fittings all the time for work and I have a few > observations. > > 1) the part you linked to says its 1/4" tube x 1/8" NPT, but the diagram > lists all of the threaded connections as 1/4" and the tubing as 1/4". The > best way to confirm this would be if you have calipers. measure the outside > diameter of the tube (should be 1/4") then measure the outside diameter of > the threads, if they are NPT Threads > <https://www.engineersedge.com/hardware/taper-pipe-threads.htm> they > should be ~0.54" and tapered with 18 threads per inch. However, every > espresso machine I've worked on (admittedly not that many) uses BSPP/BSPT > Threads > <https://www.ryco.com.au/technical/thread-connector-identification/bspt-bspp-threads/>, > > and 1/4" would be ~0.51" and 19 threads per inch. It is almost certainly > BSPP based on the picture and what I can remember about the brewtus I'm > pretty sure that elbow's threaded side is 1/4" BSPP. NPT and BSPT are > tapered threads meaning if you look at the threads from the side they come > together as they go away from the fitting, BSPP is parallel thread, meaning > the two sides are straight relative to each other. Parallel threaded > fittings almost always have an O-ring or gasket where the threads meet the > base of the fitting as well, which can help to identify them. > > 2) The tubing side is what's called "Push-to-connect"/PTC/John Guest > connection, the diagram shows a compression fitting, either one should work > fine in this application, and I'd go for whatever part you can get readily. > > 3) The part you have in the listing is listed as being for air and water, > and doesn't list what material it is made of, which since these are usually > used for pneumatics, would likely mean it is made of leaded brass, and > nickel coated. This would make it very not food/beverage safe, and I > wouldnt put that thing anywhere near something going in my body. > > You're best bet is to look something up on McMaster-Carr > <https://www.mcmaster.com>, they are an industrial supply house that > carries an absolutely mind boggling assortment of fittings in every > size/shape/connection you can imagine, and is very easy to search and has > some of the best search filters I've ever seen, including material, > connections, fitting type. You can at least use them to narrow down exactly > what you are looking for since almost all of there parts have CAD files, > and dimensional drawings that you can use to verify the part you have. > Here's a few that I think would be a better choice assuming it is actually > 1/4" tube x 1/4" BSPP: > > Stainless steel PTC swivel elbow, this one has "universal" threads meant > to work with NPT, BSPP, NPTF, and BSPT so as long as you can confirm the > size of the connection, you don't really need to know what the threads > are. This one doesn't say its food rated, but all of the materials are food > safe. Only for use with hard plastic tubing, which I am pretty sure the > tubing inside our machines is. > > Stainless Steel compression elbow <https://www.mcmaster.com/5672K321>, > again not listed as food safe, but definitely all food safe materials, > does't swivel, but very sturdy. Make sure to get the matching tube insert > if used with soft tubing. > > Best of luck! > > > > > > On Sunday, January 10, 2021 at 12:56:10 PM UTC-5 Wilson007 wrote: > >> I believe this is #5 on this diagram, but mine seems to be the "upgraded" >> swiveling design. >> [image: Screenshot 2021-01-04 175754.png] >> >> >> [image: PXL_20210104_225511977.jpg] >> >> WLL has the Elbow Replacement Kit, which appears to be similar, but >> they're out of stock, and not responding to support questions: >> https://www.wholelattelove.com/products/expobar-elbow-replacement-kit >> >> Is it this part?: >> https://www.ebay.com/itm/1-4-OD-Tube-to-1-8-NPT-Male-Pneumatic-90-Metal-Elbow-Push-Air-Fitting-3-PCS/254749979007?hash=item3b5048317f:g:L3YAAOSwWl5fiMDs >> >> -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/brewtus/b9f9693a-3213-4f68-a292-8f4453f052b4n%40googlegroups.com.
