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  #31  
Old 05-17-2009, 09:51 PM
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OLD MAN OLD MAN is offline

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I don't know what copper will stand but our fitters used it on 1500# lines.
They always stretched it and said that made it stronger. I know it bent different.
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  #32  
Old 05-17-2009, 10:31 PM
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Quote:
Originally Posted by randydupree View Post
so,what kind of pressures will the copper withstand?
do you use a flex joint at the compressor?
and is it hard pipe,or roll copper?
Soldered and Brazed Joints

http://www.copper.org/Applications/p...th_table4.html

K copper

http://www.copper.org/Applications/p...h_table3a.html

L copper

http://www.copper.org/Applications/p...h_table3b.html
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Last edited by Paychk; 05-17-2009 at 10:32 PM. Reason: clarity
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  #33  
Old 05-17-2009, 10:35 PM
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Copper hand book:

http://www.copper.org/Applications/p...h/cth_toc.html
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  #34  
Old 05-18-2009, 10:37 AM
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Lu47Dan Lu47Dan is offline
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Quote:
Originally Posted by randydupree View Post
so,what kind of pressures will the copper withstand?
do you use a flex joint at the compressor?
and is it hard pipe,or roll copper?
Randy , I have a chart somewhere on my computer that tells working pressures of various solders , but I can't find it right now . Will continue to look for it . A flex pipe can be used to connect the main to the compressor but it really depends on the compressor installation itself . I have mine hard piped into the compressor . Hard pipe makes for a neater , easier installation then roll copper does .
Paychk , thanks for posting those links .
Dan
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  #35  
Old 05-24-2009, 08:35 AM
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Default Adapters , Male .

Adapters
Adapters are used to connect copper tubing to a threaded device either male threads or female threads . Devices range from a valve to a jet pump for your water well . Anywhere you need to make a connection to a thread .
Male Adapers
Male adapters come in three general types
Regular Male Adapters
These are C X Male NPT in the same nominal size , 1/2" Copper X 1/2" MNPT is one example .
Reducing Male Adapters
These are C X Male NPT also but the C is a smaller nominal size then the pipe thread is , 1/2" Copper X 3/4" MNPT .
Fitting Male Adapters
These are F X Male NPT , the copper end slips into a bell on a copper fitting and run the same nominal size 1/2" Fitting X 1/2" MNPT .
Since there will always be a threaded connection somewhere in the system there will be a need for these .
The female adapters will be explained in my next post as there is not enough space to post all six photos here.
Dan
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  #36  
Old 05-24-2009, 05:33 PM
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Ggg Ggg is offline
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Thank you very much on writing this thread. I have been on the fence between Black Iron Pipe (BIP) and Copper. Right now at Lowes I can get 10' sticks of 1" L Copper cheaper than BIP.
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Last edited by Ggg; 05-24-2009 at 11:41 PM.
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  #37  
Old 05-24-2009, 09:07 PM
kbs2244 kbs2244 is offline
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You have to watch the pricing.
Both copper and steel (“iron pipe’) are commodities that that change cost/price weekly.
If you have a good sized project in the works, and can play a waiting game, don’t be ashamed to “wait and see what happens.”
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  #38  
Old 05-25-2009, 10:40 AM
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Lu47Dan Lu47Dan is offline
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Quote:
Originally Posted by Ggg View Post
Thank you very much on writing this thread. I have been on the fence between Black Iron Pipe (BIP) and Copper. Right now at Lowes I can get 10' sticks of 1" L Copper cheaper than BIP.
Ggg , copper is costing less then BIP. here also . I have been pricing for a friends new shop , he wants black iron pipe and I suggested copper . I gave him a materials list for both with prices . Copper was about 3% cheaper than the steel was . When he asked what would the man hours be on both he was shocked at the difference in the time . We will do it together once the shop is up and weather tight . I had figured two guys at 32 hours apiece to install the steel and one person 40 hours to install the copper . This did not include installing the uni-strut , as that will be installed by the electrician installing the conduit racks for his electrical system . We will mount the mains right to the same strut as the conduit will be .
I also saved him some money by going through an industrial supply house instead of the home stores .
I will be adding more sometime this week after I get a couple things done around here .
Dan
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Turbo torch and B-tank
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  #39  
Old 05-25-2009, 11:49 AM
kbs2244 kbs2244 is offline
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Buy the copper now.
Prices change weekly.
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  #40  
Old 08-28-2009, 11:37 AM
GPowers GPowers is offline
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Default What about Sharkbite connectors

What about using Sharkbite connectors and copper pipe for an air supply system. If you do not have the skill or tools to solder the copper connections Sharkbite would work. They are a little pricey.

They look like the type of push on connectors used in other system such as Garagepak and Rapidair except you use then with standard copper pipe? No need to buy special pipe or tubing. Plus the Sharkbite fittings are available at most hardware stores.

Sharkbite states the push on connectosr are good to 200 PSI. My compressor is rated at 150 PSI so there should be enough head room for safety. Only problem is getting square cuts on the ends of the copper tubing.

Greg Powers
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