Has anyone ever used two compressors at the same time to fill a tank? I have two yong Hengs that won't sell so I was thinking of making a station to run them together through a tee to fill tanks. See any problems?
2 Yong Hengs are better than one?
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I was going to do the same thing, running my every day YH and my backup $199 YH clone on a T with one way valves on each end to more quickly fill my SCBA tanks up to about 250 BAR than finishing them off to 4500 PSI with just my GX CS4. I am thinking of having a one way Quick Connector with a check valve on either end of the T so I can just leave the T in place to be able to quickly remove one or both or swap them out for the CS4.
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I have two but not for filling. One is a backup just in case.
My auto shutoff one had something come apart inside of it, lucky I have a spare piston, so I am using my old spare, which I rebuilt many moons ago. Works great.
I'm contemplating taking the broke 1 down to a machine shop and have them machine the crank and piston rod so I can put a roller or needle bearing in it. Super smooth.
My auto shutoff one had something come apart inside of it, lucky I have a spare piston, so I am using my old spare, which I rebuilt many moons ago. Works great.
I'm contemplating taking the broke 1 down to a machine shop and have them machine the crank and piston rod so I can put a roller or needle bearing in it. Super smooth.
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Maybe they will cancel each other out from Destructive Interference?
I am able to run both of mine on a single 30 amp circuit as long as I don't start them both at the same time, but I won't. I will use a heavy welding extension cord to bring power in from another circuit for running them at the same time continuously.
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I think it can work - with one way valves as already recommended - but I don't fully understand the need. My YH fills my 45 minute SCBA tank from around 3200 psi to 300 bar in 15-20 minutes. I guess 8-10 would be better but wouldn't be hugely different.
I also don't understand using a much smaller compressor to get to 300 bar. My YH slows down above 4000 psi but it only takes 2-3 minutes, certainly less than 5, to lift the tank pressure from 4000 to 300 bar.
If your YH is much slower than this, maybe it needs an O-ring or a fitting or two tightened - it could be because you have a leak. Mine got slow and struggled at higher pressure but when I changed the O-ring next to the reed valve it went back to performing as described above. It's noisy but works well.
I also don't understand using a much smaller compressor to get to 300 bar. My YH slows down above 4000 psi but it only takes 2-3 minutes, certainly less than 5, to lift the tank pressure from 4000 to 300 bar.
If your YH is much slower than this, maybe it needs an O-ring or a fitting or two tightened - it could be because you have a leak. Mine got slow and struggled at higher pressure but when I changed the O-ring next to the reed valve it went back to performing as described above. It's noisy but works well.
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Where is this located? "O-ring next to the reed valve" All I have done is put new O-rings in the high pressure piston and clean the two circular sheet metal reed valves in the head. Is that the what you meant by the "reed valve" ?
My original Yong Hang has quite a few hours on it and I rebuilt the high pressure piston and cleaned the internal valves., but they both struggle too much to get past 4000 psi. The GX CS4 works much better and faster to hit 310 bar/4557 PSI from 4000 psi. There are no leaks on either of the Yong Heng setups that I could find with soapy water. Neither one of my Yong Heng style machines ever did well past 4000 PSI, even when new. The needle just sat there, so I quit trying.
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My yh will fill hubens to 5000 easily but only gets my scba to 4000 and then not much happens. Can you be more specific about which o ring you replaced, where is it?
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I think a regular machine shop would charge you enough to buy another compressor. If you could find a retired guy with a small mill, that might be affordable. Setting a bearing with race is some very precise work.
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The O ring that was my problem is next to the green cardboard gasket at the top of the first stage cylinder.
The only gauge I watch is the one on the fill set for the SCBA tank. The gauge on the YH bounces all over the place and doesn't give me any useful information.
The only gauge I watch is the one on the fill set for the SCBA tank. The gauge on the YH bounces all over the place and doesn't give me any useful information.
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