Air compressor unloader line compression fittings?

[LinuxMercedes]

One of the fittings on my air compressor's unloader line leaks, and I want to replace it. I'm not quite sure what to look for, or what to replace it with. Tried calling the local hardware store and they didn't know what I was talking about, so I figured I'd ask you guys.

 

[MacMcMacmac]

It's probably a 1/4" Swagelock, the brand name of type of compression fitting. There are other brands as well but compression fitting is the type. If you have a plastic line, you will need a plastic compression ferrule with a metal liner that goes up inside the unloader line.

 

[G_P]

Post a picture of the fitting in question. They are almost always compression fittings but might be a flare fitting.
They are not specific unloader fittings. They are just general plumbing fittings.

 

[LinuxMercedes]

Thanks guys! I ended up going to the hardware store and finding what I was looking for.

Now that I've fixed that, I realize that the fittings on the main pump line are also leaking...