Compression fittings copper pipe on my compressor

[motofool33]

So I've noticed that my new hydraulic hose from my compressor to my tank is getting quite hot and it's starting to swell under pressure. Pics attached

So what I want to do is make a copper line with compression fittings and local available copper line.

I'm going to make a new line from 2nd stage head and in here I plan to put in a intercooler/after cooler before the tank.

So as I understand it to use 1/2 pipe I need to use 5/8 compression fittings. I went to home depot today and they had very limited stock of these fittings only had 5/8 comp to 1/2npt. One side I have 3/4" compressor head. The check valve is 1/2npt.

So where do you guys get your fittings I started looking at grainger. Just wanted to make sure I'm supposed to use a 5/8 compression fitting on 1/2 npt npt copper tube.

And for the copper I'm looking for the flexible L or M but homedepot only had rigid straight pipe in stock any help here is appreciated also.


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[remedialmofo]

So I've noticed that my new hydraulic hose from my compressor to my tank is getting quite hot and it's starting to swell under pressure. Pics attached

So what I want to do is make a copper line with compression fittings and local available copper line.

I'm going to make a new line from 2nd stage head and in here I plan to put in a intercooler/after cooler before the tank.

So as I understand it to use 1/2 pipe I need to use 5/8 compression fittings. I went to home depot today and they had very limited stock of these fittings only had 5/8 comp to 1/2npt. One side I have 3/4" compressor head. The check valve is 1/2 npt.

So where do you guys get your fittings I started looking at grainger. Just wanted to make sure I'm supposed to use a 5/8 compression fitting on 1/2 npt npt copper tube.

And for the copper I'm looking for the flexible L or M but homedepot only had rigid straight pipe in stock any help here is appreciated also.
View attachment 474740

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Nice pump, I like those old IR T30's. Home Depot is always a wash for me when searching for anything other than 1/8" NPT brass fittings. Common copper pipe has an OD 1/8" larger than nominal size. So 1/2" type L,M, or K is 5/8" OD

3/8" type K,L,M and also 1/2" ACR ( refrigeration tube) are both 1/2" actual OD

I usually have better luck at the wholesale plumbing shops we have in our area.

Why not go 3/4" MPT to 1/2" sweat from that black street elbow or flare it up there on top then and use an adapter coming from the black street. Also copper tube or pipe isn't NPT it isn't anything but OD and ID until it gets threads someway.

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[stage20]

you need to go to your local hydraulic shop. they will have, or should, a huge selection of pipe(tubing) and fittings that should meet your needs much cheaper than grainger, IMO.

 

[motofool33]

Nice pump, I like those old IR T30's. Home Depot is always a wash for me when searching for anything other than 1/8" NPT brass fittings. Common copper pipe has an OD 1/8" larger than nominal size. So 1/2" type L,M, or K is 5/8" OD

3/8" type K,L,M and also 1/2" ACR ( refrigeration tube) are both 1/2" actual OD

I usually have better luck at the wholesale plumbing shops we have in our area.

Why not ditch that black street elbow and thread in a copper adapter. 3/4" NPT to 1/2" sweat or flare it up there on top then. Also copper tube or pipe isn't NPT it isn't anything but OD and ID until it gets threads someway.

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never soldered/sweat copper before so ive been looking at compression fittings even if it costs more.

like these http://www.grainger.com/product/PARKER-90Deg-Male-Elbow-11G298?s_pp=false&=

 

[motofool33]

you need to go to your local hydraulic shop. they will have, or should, a huge selection of pipe(tubing) and fittings that should meet your needs much cheaper than grainger, IMO.

normally i would agree with you but after it took 11 different shops to find the 1/8" compression fitting i needed for the unloader line. im not looking to spend days driving around.

hydraulic shops in houston only do hydraulic and no other types of fittings.

 

[remedialmofo]

never soldered/sweat copper before so ive been looking at compression fittings even if it costs more.

like these http://www.grainger.com/product/PARKER-90Deg-Male-Elbow-11G298?s_pp=false&=

Ahhhh gotcha you should give it a go on your next project. I love sweating copper and I'm certain you would too. You can anneal that rigid copper tube and end up with bendy tube

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[94EG8]

That doesn't look like great hose. A hydraulic shop can make you something better that will work fine.

 

[gorilla]

Compression fittings are meant to be used on soft copper tubing not on copper pipe. The copper pipe sold at your local big store cannot be bent. Not sure how you can do what you want without soldering the pipe. I'm not sure that rigid copper pipe is a good choice to connect to a vibrating compressor. I'm reasonably sure that McMaster can supply both the fittings and copper tube you need.

 

[motofool33]

Compression fittings are meant to be used on soft copper tubing not on copper pipe. The copper pipe sold at your local big store cannot be bent. Not sure how you can do what you want without soldering the pipe. I'm not sure that rigid copper pipe is a good choice to connect to a vibrating compressor. I'm reasonably sure that McMaster can supply both the fittings and copper tube you need.

im looking to use soft copper, i found this at grainger from what i read its what im looking for http://www.grainger.com/product/MUELLER-INDUSTRIES-Type-L-2LKN1?s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/2LKN1_AS01?$smthumb$

am i correct? ill be calling a few plumbing places today to see what i can find.

 

[bigredmf]

Compression fittings are meant to be used on soft copper tubing not on copper pipe. The copper pipe sold at your local big store cannot be bent. Not sure how you can do what you want without soldering the pipe. I'm not sure that rigid copper pipe is a good choice to connect to a vibrating compressor. I'm reasonably sure that McMaster can supply both the fittings and copper tube you need.

You can bend rigid copper with the correct bender.

Also you can use compression fittings on it.

You would be better off with a Teflon or Corrugated metal hose because of vibration!

Red


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[jeepntxj]

You're in Houston? There is a Parker store by the Fastenal on 610N. Hydradyne, I think? Tell them what you're trying to do and they'll fix you up.

 

[motofool33]

You're in Houston? There is a Parker store by the Fastenal on 610N. Hydradyne, I think? Tell them what you're trying to do and they'll fix you up.

Thx I'll check it out

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[DC73]

And for the copper I'm looking for the flexible L or M but homedepot only had rigid straight pipe in stock any help here is appreciated also.

HD and Lowes both carry the soft copper in coils. If they tell you they don't have it, I wouldn't believe them. If I remember correctly, my HD stocks the soft copper coils in a different location from the copper pipe.

http://www.homedepot.com/p/Cerro-1-...-Type-L-Coil-5-8-in-OD-PCLE-500L010/203654558

DC

 

[motofool33]

Thats good to know i dont think ill even need 10ft worth

 

[bobemmerich]

My local HD has it where the fittings fittings and valves are. Due to vibration, I would think you'd want something with some "give" or flex to it.

 

[motofool33]

My local HD has it where the fittings fittings and valves are. Due to vibration, I would think you'd want something with some "give" or flex to it.

Tried the flex thing cost me 77$ for a hose that is gonna fail. Now it's time for something that will take the heat.

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[gdh33]

I second the idea of a hydraulic shop making you a hose or the Parker store. With the vibrations, temperature and pressure you will want a somewhat flexible hose/pipe that can take the heat. Just need to tell them what size you are going from 3/4 male NPT to what ever your check valve/tank is.

 

[motofool33]

I second the idea of a hydraulic shop making you a hose or the Parker store. With the vibrations, temperature and pressure you will want a somewhat flexible hose/pipe that can take the heat. Just need to tell them what size you are going from 3/4 male NPT to what ever your check valve/tank is.

Already did that this hose is 2 weeks old

See how it's swelling and changing color under the heat.



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[motofool33]

This is the cooler I'm putting on Hayden Automotive 1260 Heavy Duty Oil Cooler https://www.amazon.com/dp/B000HEADJ2/?tag=atomicindus08-20

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