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A friend gave me his old craftsman direct drive air compressor after he upgraded. I was checking it out and found a leak in the thread of the plug where the check valve is... Not on the check valve thread itself. I tried getting the plug out so I could add some Teflon, but that plug isn't...

Guess I found it. Looks like it is described by Boyle's law. pV=k. Pretty simple math. So in this case 155 * 20 = 3100. Divide that by the reference psi of 135 and you get 22.96 gallons. So compressor 1 holds more energy.

So this isn't a typical compare this and that compressor post. I hope it hasn't been covered. I searched but found nothing. Let's say we have two air compressors: 1. 25 gallon rated at 135psi 2. 20 gallon rated at 155psi The tank on compressor 2 is smaller, but contains a lot more air...

Not sure what it says on a receipt, but here is what it says online. RETURN POLICY If for any reason you are not satisfied with any item purchased, you may return the product within 90 days for a full refund or replacement, whichever you prefer. Shipping and handling are non-refundable...

I have a similar one I bought second hand. I think it has been used a ton. The pump has issues. Past 110 psi it struggles. I was going to throw a valve plate on it, but grainger tech support suggested I check the rings first. To do that pull the dipstick and put seal the hole with your...