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VEVOR SG-7500 Dent Pulling Machine Removal System Station

This tank was a propane tank that was once hooked up to my house. We didn't use it anymore so I repurposed it for this compressor. As far as where you can get these tanks, I know that I've seen them on Facebook marketplace but beyond that I haven't investigated. You could probably contact your local natural gas propane company and they could point you in the right direction.

@@Maintenance_Matt Okay cool thanks

Sure thing Dave. The pipe that comes out of the compressor is half inch, from there it steps up to 3/4-in pipe and connects to a 3/4-in check valve. Now the reason I had to step up to a 2-in coupling and then a 2-in reducer back to 3/4 with a small pipe nipple in between was because the 3/4 check valve for the air bleed off is about 3 in long and would not fit inside a normal 3/4-in coupling or tee. So that was a design flaw that I didn't foresee. As far as things to consider when building yourself one, I had to order my pulley from McMaster-Carr because Northern tools or Harbor Freight or even Grainger didn't have options for the pulley I needed for the motor I have. I did feel the tank with water twice and I weld it on it with water in it. I've never welded on a propane tank before so I wanted to make sure that all the residual propane was out of there. This tank was built in 1958 so it's held up so far I'm not sure if newer tanks are thicker or thinner. There is a placard on the top of my tank that says the maximum design pressure is 250 PSI. I figured 250 PSI is plenty strong enough for my 175 PSI compressor.

I agree, Reggie. A rotary screw compressor would be awesome, but the price point is not realistic for what I'm doing. I have around $500 in this compressor, and it works fine for my needs. Regarding your point that I'll wear the pump head out: this compressor, used all day, has no more run time than your average 80-gallon tank. While it takes longer to fill up (about 27 minutes on average), which is roughly three times as long as an 80-gallon tank, it also takes that much longer to drain before the pump kicks back in. Do you have much experience with rotary screw compressors? I know very little about them other than that they're extremely efficient.

Absolutely, as long as your output that you're using, The CFM, is equal to or less than the pump rated CFM.

Moreover it should, based on what I've read, increase the life of the compressor pump. While the pump does run longer it's not cycling on and off as much, and we all know that cycling on and off is what kills a pump. Heat expanding and contracting is happening more with a smaller pump than with a larger pump, like stop and go driving.

This compressor has way more CFM than my old one. It runs my sand blaster and DA sanders no problem. The compressor performance isn't affected by the size of the tank. It hovers around 145PSI tank pressure while using a sand blaster at 100 PSI on my regulator, then recovers to 175PSI tank pressure. Works great so far.

@@Maintenance_Matt ..think about it.....really really think about......the compressor's performance (CFM) WILL diminish the larger the tank AND OR more tanks it has to fill......BECAUSE FILLING A TANK IS A JOB.......IF THIS WASN'T THE CASE, you could TIE unlimited amounts of tanks. lmfao everytime i see this sh;t, your cooking that pump

Impact on SCFM:Direct Impact: The SCFM rating is not directly decreased by the size of the tank. The compressor will still produce 15 SCFM at 90 PSI as long as it is running.Operational Impact: A larger tank can help manage airflow demands better by storing more air. During periods of high demand, the stored air in the tank can be used, which might temporarily give the impression of higher airflow. However, once the tank starts to empty, the compressor needs to work to refill it at its rated SCFM.Summary:SCFM Rating: Remains constant at 15 SCFM at 90 PSI as rated by the manufacturer, regardless of tank size.Tank Size: Provides storage capacity to smooth out demand peaks and reduce compressor cycling, but does not change the SCFM rating. In conclusion, the large tank does not decrease the SCFM rating of your compressor. The compressor's airflow capacity remains the same, but the tank helps manage air supply more efficiently over time.

Another thing Bill, to address your claim that I'm cooking the pump, if you have two compressors let's say ones and 80 gallon tank and you have my compressor that's a 250 gallon tank and both pumps put out the same CFM. Let's say over a 4-hour period both compressors are using 7 CFM, both pumps are going to have the same amount of runtime given that the pressure switch is cut on and off at the same pressures. Because the duty cycle is a relative measure that depends on the proportion of time spent refilling to the total cycle time, and both compressors have the same duty cycle, they will run for the same total amount of time over any given period, including the 4-hour period in question. I hope you really really think about it...

Maintenance Matt, I agree with @billdavid6315. You’re cooking the pump. Also, you’re stupid, and you eat doodoo sandwiches, which is a disgusting thing to do. But you do it anyway. Because you’re dumb. I hope you really, really think about how stupid and disgusting it is to eat a doodoo sandwich next time you are eating one.

Thank you very much!

It's a work horse! No problems at all. All the air I'll ever need!

Man it works great! It takes about 27 min to fill up and once it's full, recovery time is nomal and it keeps up with blasting or sanding no problem. As far as the propane tank goes, I was worried about the smell but that went away after a couple of weeks. This tank was built in the 50s and is rated at 250 PSI so 175 seems to be no problem. Thanks for watching!

@@Maintenance_Matt Did you wash it out before welding the platform on it? Someone told me the air stays flammable.

I did, twice. I filled it with water, emptied it and filled it again before I attempted to weld on it.