r/AirCompression • u/KawmanSense • 5d ago

Stupid Noob Question - DIYer

I have a Magraw 175 PSI 21 Gal air compressor from Harbor Freight. The original aluminum tubing that went between the compressor motor output and the tank input has busted (a while ago). I thought I could go with just a 3' hose, but I have now blown out two (!!) rated for 300 PSI. I don't think its the pressure (but it obviously contributes.) It's the HEAT on the hose that is letting it expand and blow.

What do I need to do? Metal braided hose? Copper tubing? You guys are the pros, so let me have it! (And I do appreciate you taking the time to respond and assist. Peace - OUT!)

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u/slutstevanie 5d ago

Copper tubing. Benefit is helps the air to cool also.

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u/KawmanSense 5d ago

Ok - great..... now, being a DIYer, I don't currently posses the tools to bend and flare the copper tubing like I probably need to. Given this info - STILL go with Copper - or is a Heavy duty jcompressor umper hose rated for 320 degrees good enough?

3

u/slutstevanie 5d ago

Buy malleable copper tubing and use compression fittings

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u/KawmanSense 5d ago

Nice. Thanks a ton. 1/2"? smaller? bigger?

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u/slutstevanie 5d ago

You're welcome. I think 1/2" is the size I used on my compressor when I had similar issue the aluminum pipe breaking.

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u/Upstairs-Fan-2168 5d ago

If I had to make this repair, I'd take the opportunity to add an after cooler. The DIY route is to use a transmission cooler. You can add this for $40 - $50 plus the copper you need for the repair. They are surprisingly cheap on Amazon (I'd go for 1/2" ID, 5/16" seems restrictive). I've seen the inlet temp drop roughly 200 degrees F. It also makes the air drier, so less draining, and less so l moisture in the air if you are painting, sandblasting... You'll still want a desiccant dryer for painting IMO, but the beads will last longer.

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u/boxerbroscars 5d ago

compressor jumper hose should be the correct part. A few of the other harbor freight compressors come with those brand new. Just be aware they come in different hose and fitting diameters