Compressor for home fills

[lew]

Interesting, Nxt. I've got my eye on that one.

It's only my curiosity asking, but is there any issue with running two water/oil separators in parallel?

[Nxt1playr]

Interesting, Nxt. I've got my eye on that one.

It's only my curiosity asking, but is there any issue with running two water/oil separators in parallel?

I don't see an issue, but by no means am I an expert on the topic. My theory within my answer is that the separation device was ment to allow air passage at those pressures so two should still be able to allow for those pressures.

Now that being said, I think not confirmed, when I switched my hoses out it did SEEM to take slightly longer to fill. I think. My hose from the hand pump is slightly smaller in diameter, not threads, than the one that came with the compressor. I plan on switching back once the filter gets here.

Also side note, more of an opinion, I was really looking at the cheaper one on amazon for a hot minute over this one. Just seemed like the quality was there by leaps and bounds on this one compared to the other no name cheap compressor.

[lew]

@Nxt1playr

Bloody well appreciated on all the info. This one looks like it'll fit the bill.

[Grendel]

I've watched some videos on this compressor by some Pneumatic Rifle buffs and the big concern from them is to not run too long since there isn't a means to water cool the unit. One guy places the compressor on an A/C vent to aid in cooling and says it barely gets warm fill a tank or two at a time. I am seriously considering this compressor I would like to have the ability to charge my own tanks without having to go to a field or dive shop. Right now business hours for both are very inconsistent so tired of wanting to fill a tank (scuba) and the dive shop not being open when website lists business hours.

[Nxt1playr]

I've watched some videos on this compressor by some Pneumatic Rifle buffs and the big concern from them is to not run too long since there isn't a means to water cool the unit. One guy places the compressor on an A/C vent to aid in cooling and says it barely gets warm fill a tank or two at a time. I am seriously considering this compressor I would like to have the ability to charge my own tanks without having to go to a field or dive shop. Right now business hours for both are very inconsistent so tired of wanting to fill a tank (scuba) and the dive shop not being open when website lists business hours.

This is true, I have read this multiple times not to fill back to back and give it roughly 20 mins to cool down. The fan constantly runs when the power is hooked up whether it's on or off for the wall converter and the fan always runs when the compressor power switch is turned on whether it is operating or not.

I am running it indoors in me house where the AC is so it's pulling "non humid" air at around 74 degrees Fahrenheit. When I did my first oops fill without the filter it was outside at probably 80 percent humidity and 95+ degrees outside. I discharged 4500 psi and that regulator froze like I discharged a Co2 tank lol. It's all good now though.

[Big Jim]

I too am quite interested. My closest dive shop is 2-1/2 hours away and charges 15. Then they want an annual external inspection for $40 plus the standard hydro. I've got 6 scuba tanks and about 8 players that would like fills time to time.
Would a larger water bath tank help keep the compressor cool? I was hoping to cascade 3 or 4 scuba tanks together so they fill slow enough not to heat up. That will allow them to fill to 3000 rather than the 2100 that I have been getting from the local field fills. Local being only 90 miles.

[Nxt1playr]

Performed fills #5-7 today. Filled 48/3000 from 900-3000, then a 35/3000 from 1500-3000, then lastly 22/3000 from less than 1000-3000. All right after each other no breaks, took roughly 20 mins, 20 mins, then 10 mins.

Jim
the compressor I am using is not quite designed for large tanks, however I believe this one, link below, may be a good starting point. If not these portables in theory could possibly be used if you make them take breaks while doing a fill.

https://www.amazon.com/Compresor-presi%C3%B3n-tanques-paintball-autom%C3%A1tica/dp/B07SFDXMG4/ref=mp_s_a_1_58?dchild=1&keywords=30mpa+air+compressor&qid=1597201780&sr=8-58

https://www.amazon.com/HPDAVV-Controller-Compressor-Accessories-Operational/dp/B07HKJ4SCP/ref=mp_s_a_1_13?dchild=1&keywords=300+bar+air+compressor&qid=1597201645&sprefix=300+bar&sr=8-13

https://www.amazon.com/dp/B0832MT5JP/ref=dp_cerb_1

[lew]

Performed fills #5-7 today. Filled 48/3000 from 900-3000, then a 35/3000 from 1500-3000, then lastly 22/3000 from less than 1000-3000. All right after each other no breaks, took roughly 20 mins, 20 mins, then 10 mins.

Jim
the compressor I am using is not quite designed for large tanks, however I believe this one, link below, may be a good starting point. If not these portables in theory could possibly be used if you make them take breaks while doing a fill.

https://www.amazon.com/Compresor-pre...201780&sr=8-58

https://www.amazon.com/HPDAVV-Contro...00+bar&sr=8-13

https://www.amazon.com/dp/B0832MT5JP/ref=dp_cerb_1

While I'm not Jim, I'm going to look into these as well as the one you're using at a later date when the booze isn't the one with all the good ideas. So, preemptively, thanks for the links.

Regarding larger tank filling, is the only issue compressor run time- thus heat generated- or is there something I'm not considering limiting them from filling bulk tanks? If that is indeed the case, filling a bulk tank using a few spaced-out run intervals to allow for cooling should add to the "lesser" units' capability.

[Nxt1playr]

Did not understand the first paragraph.

Second I believe that is correct. I am under the understanding that it is such a large amount of space the time it would take could overheat and burn out the unit. It is listed somewhere in the manual that you should only fill up to a 68 cu tank which I say BS.

[lew]

I hope that's B.S. cuz I only have one 68 c.i. tank. The others are 77 and 90.

[Nxt1playr]

I have a big scuba tank I can try to fill I will just have to figure out a way to do it.

[Grendel]

I've thought about this somewhat and a relatively easy way to do this is with an outlet timer or even a WiFi/VPA Smart outlet. You could set it for 20 min on then 20 min off and have it [compressor] setting on an A/C register to aid in cooling. This all assuming 20 min off is sufficient time for the compressor to cool down to ambient [you would know better then me how long it takes to cool down]

Another way would be use something like an Arduino and one or two thermocouples to monitor actual temperature to cut on/off based on actual compressor cylinder temperature. You could even use a pressure sensor on the fill line and integrate that also into the controls.

I'd experiment with the first option and if I could get it to work reliably then go through the effort to use a programmable controller with temperature input sensors.

[Nxt1playr]

I love those ideas

[JonM]

If this compressor is anything like the Yong Heng, you need to bleed the air before shutting it off or else you run the risk of killing the pump. Having it on a timer would just cycle the power on and off without relieving pressure in between cycles.

[Nxt1playr]

Since it has been brought up multiple times now, and I'm thinking about it. The tanks I have self filled now and in the past with a hand pump have really never warmed up from the compression. I believe that it is due, hypothesis, to being compressed at small intervals, about 25-50 psi per pump, instead of a big dump and transfer from a large tank. Another factor that is probably walking in tandem with this is the fact of how long it takes to fill causes the heat of any to be relatively small and not compound on itself.

[William the Third]

I am running it indoors in me house where the AC is so it's pulling "non humid" air at around 74 degrees Fahrenheit. When I did my first oops fill without the filter it was outside at probably 80 percent humidity and 95+ degrees outside. I discharged 4500 psi and that regulator froze like I discharged a Co2 tank lol. It's all good now though.

In all fairness, the reg would still have froze like that if you were to rapidly discharged 4,500 PSI of pure nitrogen.

[Nxt1playr]

New update: ran the compressor basically non stop Sunday. I was filling 13cu tanks to 3000 psi for about 10 fills, with about 5-10 mins between each two fills, then switched to 1200-1500 psi fills and did at least 20-30 fills back to back for the rest of the night, (working on tank regulators). Monday I did the same 1500psi or less fills for at least 15 fills non stop. Never got hot, only warm, and doing the 1500psi fills barely generated heat. No problems to report.

[lew]

Yeah, baby. I can hardly wait to pick one up.