Re: Chinese high pressure compressors
Posted: Sat Nov 18, 2017 2:21 pm
Well - as mentioned, my 4.5l bottle is less than a year old. It's rated for 300Bar (not sure what the tested saftey parameters are but I am guessing it's way above 300Bar.)
I keep an eye on all the guages whilst the pump is working and I will not exceed 300Bar. There are folks I have read about who have let it run past 300Bar and the saftey blow out disc kicks in and ruptures. I have stripped out my safety disc holder etc and made sure I've got one fitted (I've been supplied with 10 spare ones.) I have a second stage moisture filter on the line with silica in between two filter elements. At the last top up, the 2nd filter element on the end stage 'felt dry', I squeezed it in a white bit of tissue paper and I could not detect any moisture or oil. Hardly scientific, I know but even 'breathing air' from a dive shop isn't 100% free of moisture and I am told that this will vary from shop to shop depending on when last they changed out their filters and how saturated they were at the time...etc...etc..
I am not providing refilling to anyone nor advocating anyone should rush out and buy one. I am an ex fitter / machinist and am used to working on mining equipment and machinery (in a Gold mine in South Africa quite some years ago), so I guess for me I am probably willing to take more of a risk than the average individual.
I also priced up a spare con rod, piston and piston rings and incl delivery, its about £50.
Agreed - I doubt it will last 5 years but with spares cheap and available, it might be viable - who knows.
My closest dive shop is a pain in the arse to get to and deal with. If this wasn't the case, then I highly doubt I would have gone ahead with this idea.
Anyone can piss on my chips - each to his own!
I keep an eye on all the guages whilst the pump is working and I will not exceed 300Bar. There are folks I have read about who have let it run past 300Bar and the saftey blow out disc kicks in and ruptures. I have stripped out my safety disc holder etc and made sure I've got one fitted (I've been supplied with 10 spare ones.) I have a second stage moisture filter on the line with silica in between two filter elements. At the last top up, the 2nd filter element on the end stage 'felt dry', I squeezed it in a white bit of tissue paper and I could not detect any moisture or oil. Hardly scientific, I know but even 'breathing air' from a dive shop isn't 100% free of moisture and I am told that this will vary from shop to shop depending on when last they changed out their filters and how saturated they were at the time...etc...etc..
I am not providing refilling to anyone nor advocating anyone should rush out and buy one. I am an ex fitter / machinist and am used to working on mining equipment and machinery (in a Gold mine in South Africa quite some years ago), so I guess for me I am probably willing to take more of a risk than the average individual.
I also priced up a spare con rod, piston and piston rings and incl delivery, its about £50.
Agreed - I doubt it will last 5 years but with spares cheap and available, it might be viable - who knows.
My closest dive shop is a pain in the arse to get to and deal with. If this wasn't the case, then I highly doubt I would have gone ahead with this idea.
Anyone can piss on my chips - each to his own!