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Old 01-17-2014, 06:35 PM   #551
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Originally Posted by Bensiff View Post
Good point with the machining. So here is what I'm talking about, see that ring of rust? Obviously it needs hit with some BKF to clean out but that groove would not be there if it was sanitary.


Attachment 172667


As far as them being machined. The left part is from glacier tanks, you can see the machining. The right came from stout tanks. Looks cast then polished like you said.



Attachment 172668
Just a heads up incase you dont like the double picture posting

http://www.homebrewtalk.com/f39/thos...iphone-454165/


Cant wait to see the whole thing put together. You 2 have some amazing and inspiring builds going on here
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Old 01-17-2014, 09:24 PM   #552
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Originally Posted by kickflip_mj
That's exactly what I'm talking about! Thank you for posting pictures. In the future if like to get a away from these threaded electric ball valves. But in the mean time, I don't want to spend the coin until something cheaper hits the market. For a few months there I was working on sanitary electric ball valves. I was making progress but the costs seemed unreasonable for a homebrewer. Not only that I spent around $500 on RD that didn't end anywhere. now that I just mentioned this, I think I figured out how to fix a problem. Hmm what if I came up with a solution and just posted it for free so that anyone can create a valve without my added costs?
I haven't seen a close up of the ball valves you are using. Could you have a local welder drill out some end caps and then weld them on? If the ball valves are fps you would need to have them turned smooth too though.
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Old 01-17-2014, 09:31 PM   #553
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Originally Posted by Bensiff View Post
I haven't seen a close up of the ball valves you are using. Could you have a local welder drill out some end caps and then weld them on? If the ball valves are fps you would need to have them turned smooth too though.


Thats exactly what I was thinking about doing. What do you think it will cost to have a machine shop lathe the threads out of a stainless 1/2 ball valve? Hmm maybe I should buy a small lathe and give it a go

 
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Old 01-17-2014, 10:35 PM   #554
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Hmmmm.......I don't THINK, that any of those "tri clover" fittings are cast.

The "polished" vs. "machined" look is probably from the polished one going into a "vibratory" de-burring / polishing machine after manufacturing.

I could be mistaken.............I was once.
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Old 01-18-2014, 03:35 AM   #555
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Originally Posted by kickflip_mj
Thats exactly what I was thinking about doing. What do you think it will cost to have a machine shop lathe the threads out of a stainless 1/2 ball valve? Hmm maybe I should buy a small lathe and give it a go
That I couldn't tell you. I do want to find a welder to tack some TC fittings to my counter flow though. If you want to buy a lathe, I'd recommend looking into the HF mini lathe, I've come close to buying one many times. Also http://www.mini-lathe.com is an excellent resource to get started.
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Old 01-18-2014, 05:42 PM   #556
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Originally Posted by kickflip_mj View Post
Thats exactly what I was thinking about doing. What do you think it will cost to have a machine shop lathe the threads out of a stainless 1/2 ball valve? Hmm maybe I should buy a small lathe and give it a go
It has been a long time since I was in a metal shop but I think using a milling machine would be easier than a lathe. But any competent machine shop should be able to knock that out pretty easily.
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Old 01-18-2014, 05:51 PM   #557
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Quote:
Originally Posted by Stealthcruiser View Post
Hmmmm.......I don't THINK, that any of those "tri clover" fittings are cast.

The "polished" vs. "machined" look is probably from the polished one going into a "vibratory" de-burring / polishing machine after manufacturing.

I could be mistaken.............I was once.
I guess this makes twice. Still, an enviable record.

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Old 01-18-2014, 08:33 PM   #558
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Originally Posted by Bensiff View Post
That I couldn't tell you. I do want to find a welder to tack some TC fittings to my counter flow though. If you want to buy a lathe, I'd recommend looking into the HF mini lathe, I've come close to buying one many times. Also http://www.mini-lathe.com is an excellent resource to get started.

Just drill out the TC end caps and solder them on like I did, it was super easy! Click image for larger version

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Old 01-19-2014, 05:08 AM   #559
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Originally Posted by kickflip_mj View Post
Thats exactly what I was thinking about doing. What do you think it will cost to have a machine shop lathe the threads out of a stainless 1/2 ball valve? Hmm maybe I should buy a small lathe and give it a go
I recently used a pro welder down here in the bay area (mtn view) and he has a machine shop next door that has worked with him from time to time. The weld was 20 and the machining was 30. I had a TC 2" cap drilled out and had a 1/2" Tee , where i had the shop take out the threads one one side of the T, then put that end into the cap then had it welded (this is the base to my pressure fermenting in sankes btw) The finished product looked like a thing of beauty... I should take a pic and post it. I did feel like I was paying too much for that but you get what you pay for and as an hourly rate it aint that bad...imho

 
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Old 01-19-2014, 03:04 PM   #560
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Originally Posted by kickflip_mj View Post
Just drill out the TC end caps and solder them on like I did, it was super easy!
that might be what I end up doing...I suppose stainless to stainless is no more difficult than soldering stainless to copper. Right now I have some of those screw on TC fittings but the goal is to not have any threads because I'm lazy and hate cleaning them

 
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