I've been trolling through this topic for days trying to find a compressor UNDER 1k to fill a standard large scuba tank. I believe mine is around 77 cu ft. All l need to do is just top it off maybe once or twice a year. I don't shoot that much but it's a pain to go to a scuba shop to have it topped off.
What I've found are the following:
Omega Trail Charger, Umarex, Xisico GR-cs3, Air Venturi Nomad, Benjamin Travler gen 2, and the Yong Heng.
From all of the you tube videos I've seen, the Yong Heng is the only one filling large tanks.
Can someone recommend one ? Thanks, John
I own a YH, and top off a scuba tank regularly. Try to only top off tanks, never going below2800psi. I also feed my YH with nitrogen most of the time except for 1 small scba tank I use for an air source.
Key to a long life for your YH is short run times, good cooling, proper compressor oil and oil level, correct voltage, and following the fill/stop procedures correctly. Use the shortest largest id fill hose you can get(within reason),
without restrictions/restrictor in the hose/fittings of your compressor discharge line. I recommend no more than the standard small filter inline
while filling a tank with any of the cheapy compressors,
if even that. I use just a fine screen filter to keep out debris. Imo much more effective to Filter/dry your air when filling your gun from the cold/cool tank after all the water vapor has condensed in the bottom of the tank. It won't hurt the tank at all, and if you're handy can mod the tank valve so you can invert the tank and purge any water out of your tank more or less using your tank as a condenser or after cooler like the big boy compressors...
While filling gun from the tank use as many inline filters/driers/water separators/restrictors/etc, as you fancy.
Trying to filter/dry while filling the tank from the YH discharge line of super heated air/water vapor is almost impossible to remove with the filters we have available, and all the inline filters/driers/water separators/restrictive fittings hoses/etc, just slow down and over load the small cheap YH.
Break down your tank fill to multiple short sessions with sufficient cooling time intervals also extends compressor life and reduces oil blowby, imo...
YH is a 1.5 cfm pump, iirr its the most powerful, least expensive, of all the ones you listed...
jmo
