Well, went out for a session to fill up a new tank today and my failed pressure guage on the yong heng compressor started leaking air… an hour later the McMaster Carr order came in and I replaced that with a 2” Wika guage and high pressure adapter…cool, that ought to be the end of my problems right?
Another 15 minutes later the compressor just isn’t gain any pressure…huh, grab the soapy water, sure enough it had a leak at the last steel high pressure steel tube before the fill line. Dug up my spare gasket oring things and that should fix it. Nope, it also had a leak on the compression fitting on the top of the “high compression piston.” After retightening the lines multiple times no dice. It holds to 2k psi then starts leaking above that.
I've seen this issue with compression fittings before, where they seal once compressing the diameter of the line then fail to reseal after a disassembly.
I am thinking the rubber washers experienced some higher heat and they broke down since the rubber portion looked crumbly. Thinking about replacing those with copper or aluminum washers like you see on some hydraulic fittings
I usually cycle the compressor on for 15-20 minutes and have an equivalent rest/cooldown period. So I didn’t expect this issue. Oh well.
This is what I’m thinking, 3/16 automotive brake line (copper nickel alloy) is rated for 11,909 psi. I already have all the hardware to make flared brake line fittings. I’m thinking about ordering brake component adapters to make the connections and replace these sub-par lines. I’m also thinking a little longer line could be used and some cooling coils added while re-imagining the setup, as long as a person avoids low spots to avoid pooling points for moisture buildup…could be a win-win.
I’m seekin input on whether or not this is an alright idea, or a potential train wreck….as long as I’m staying with hardware safely rated for the pressures we are getting that should work fine right? I like the double flare component to brake lines vs compression fittings. I’m actually pretty surprised they use this style of straight through compression fittings…
Just trying to avoid buying an alkin for 2-3 more years, then I’m going to fill this thing with tannerite and send it to its firey resting place….or give it to some kid just starting out.
This compressor has filled 30 minute scba tanks from empty 4 times, and my new 97cf tank to 2000psi from empty exactly once. In the grande scheme of things it’s seen very little use, I like solving problems and making things better, but not quite this often…
Another 15 minutes later the compressor just isn’t gain any pressure…huh, grab the soapy water, sure enough it had a leak at the last steel high pressure steel tube before the fill line. Dug up my spare gasket oring things and that should fix it. Nope, it also had a leak on the compression fitting on the top of the “high compression piston.” After retightening the lines multiple times no dice. It holds to 2k psi then starts leaking above that.
I've seen this issue with compression fittings before, where they seal once compressing the diameter of the line then fail to reseal after a disassembly.
I am thinking the rubber washers experienced some higher heat and they broke down since the rubber portion looked crumbly. Thinking about replacing those with copper or aluminum washers like you see on some hydraulic fittings
I usually cycle the compressor on for 15-20 minutes and have an equivalent rest/cooldown period. So I didn’t expect this issue. Oh well.
This is what I’m thinking, 3/16 automotive brake line (copper nickel alloy) is rated for 11,909 psi. I already have all the hardware to make flared brake line fittings. I’m thinking about ordering brake component adapters to make the connections and replace these sub-par lines. I’m also thinking a little longer line could be used and some cooling coils added while re-imagining the setup, as long as a person avoids low spots to avoid pooling points for moisture buildup…could be a win-win.
I’m seekin input on whether or not this is an alright idea, or a potential train wreck….as long as I’m staying with hardware safely rated for the pressures we are getting that should work fine right? I like the double flare component to brake lines vs compression fittings. I’m actually pretty surprised they use this style of straight through compression fittings…
Just trying to avoid buying an alkin for 2-3 more years, then I’m going to fill this thing with tannerite and send it to its firey resting place….or give it to some kid just starting out.
This compressor has filled 30 minute scba tanks from empty 4 times, and my new 97cf tank to 2000psi from empty exactly once. In the grande scheme of things it’s seen very little use, I like solving problems and making things better, but not quite this often…
