Gas bottle compressor

[KMpuggy]

Im sure this has been asked many times. Ive had a look around, but most of the info is turning a gas bottle into a receiver tank.

My old second-hand 50l compressor has given up the ghost, well the tank has had it, its got a crack/pin hole near the top where the motor bracket weld is, and anytime id drain water it was always a rusty colour, tbh, i should've ditched it ages ago. Monies tight at the mo, ive been looking at some of them cheaper 100l compressors, (wolf/SGS) but from what ive read they're Chinesium crap and the tanks are quite thin, and a clarke/sealey are a bit out of my price range, im also a bit wary of buying second hand. Ive stripped everything off my old compressor and have been thinking of adding it all to a 47kg gas bottle, in pretty much in the same layout as the old one. Cut the bungs off the old one, drill some holes, add some brackets and weld them into basically the same places, and then attach motor and pipes.

I will obviously drain and fill it with water a few times, leave it a while to get rid of any fumes. The main question i have is it safe to weld onto a tank, structure wise?

Any help would be much appreciated.

Thanks

 

[frank horton]

propane bottle are also pretty thin......
I would spend my last dollars getting an old cast iron compressor.....it will still be working and have a heavy old tank.....
Never heard of an old tank exploding, they just get holes.....so no worries there...
also on the plus side they are normally quiet to use.....
also look at some with the a vertical tank, they take up less room....they are not as common as the reg comp style....

 

[gordon stephenson]

Butane/propane bottles etc are typically around 3mm thick.

 

[Seadog]

This is on FB at the moment. Romford

 

[maroon]

according to google propane tanks have a 35bar burst pressure, so i'd half that. you would need to regulate the holding pressure setting on the blow off valve and starter. you may need to run lower than your current receiver tank.
some new coupling fittings, weld those onto it. i wouldn't start patchwork quilting bits off your old tank.

 

[not done it yet]

Last time I wanted a receiver I bought a good 50l tank for about two quid (OK, it may have been as much as a fiver - but probably not). Far cheaper than destroying a perfectly good propane bottle, as I see it.

 

[brightspark]

Last time I wanted a receiver I bought a good 50l tank for about two quid (OK, it may have been as much as a fiver - but probably not). Far cheaper than destroying a perfectly good propane bottle, as I see it.

i have a 47 kg bottle going down the tip when i can be bothered free to good home calor cant be arsed so why should i bother giving it back

 

[tom2207]

according to google propane tanks have a 35bar burst pressure, so i'd half that. you would need to regulate the holding pressure setting on the blow off valve and starter. you may need to run lower than your current receiver tank.
some new coupling fittings, weld those onto it. i wouldn't start patchwork quilting bits off your old tank.

35 bar is a lot more than a compressor will ever need ,,, 8 or 9 bar max say 110 psi working so if they were tested it would only be a 35% over ,,,
usually by the time the tanks done ,, so is the compressor . Maybe time for a new one , although the one listed in the pics would have my attention ,, separate compressor and motor changes the game big time.

 

[cheb]

You could stand the propane tank upside down and use a tee piece where the valve fits. Feed in one side and output the other. Water traps and the like can be in the system where they suit best.

 

[maroon]

35 bar is a lot more than a compressor will ever need ,,, 8 or 9 bar max say 110 psi working so if they were tested it would only be a 35% over ,,,
usually by the time the tanks done ,, so is the compressor . Maybe time for a new one , although the one listed in the pics would have my attention ,, separate compressor and motor changes the game big time.

sometimes that depends on the nut or bolt you're trying to get off.

 

[MoreWellie]

You could stand the propane tank upside down

I wouldn't do that, any water in the tank is going to instantly come out in your airline

 

[W.olly]

i have a 47 kg bottle going down the tip when i can be bothered free to good home calor cant be arsed so why should i bother giving it back

ill take it if you can pop here with it lol. i tried to buy two now on marketplace and one seller said yes i can have it and he has not given me his details to get it, the other just hasnt told me when, to collect it.

bloody hard to buy aswell as sell stuff nowadays.

 

[cheb]

I wouldn't do that, any water in the tank is going to instantly come out in your airline

Why didn't you bother quoting the part where I said adding water traps where convenient?

 

[KMpuggy]

This is on FB at the moment. Romford

View attachment 365924

Thanks for the replies people, and thanks Seadog, i went and picked that one up. Heavy old thing, made of cast iron, in 1956.

 

[brightspark]

ill take it if you can pop here with it lol. i tried to buy two now on marketplace and one seller said yes i can have it and he has not given me his details to get it, the other just hasnt told me when, to collect it.

bloody hard to buy aswell as sell stuff nowadays.

manchester will cost me 80 quid in fuel to drop it off

 

[W.olly]

manchester will cost me 80 quid in fuel to drop it off

ye lol. i found a couple on ebay local. j just hope bidding dont get stupid.

 

[MoreWellie]

Why didn't you bother quoting the part where I said adding water traps where convenient

Because I didn't see anything wrong with that bit

 

[armalites]

ill take it if you can pop here with it lol. i tried to buy two now on marketplace and one seller said yes i can have it and he has not given me his details to get it, the other just hasnt told me when, to collect it.

bloody hard to buy aswell as sell stuff nowadays.

It always amuses me seeing people on eBay/Facebook selling gas bottles that they don't even own.

 

[W.olly]

It always amuses me seeing people on eBay/Facebook selling gas bottles that they don't even own.

Easily amused then i see.

 

[brightspark]

It always amuses me seeing people on eBay/Facebook selling gas bottles that they don't even own.

nothing wrong with selling calor bottles. you pay the deposit for them and years later they wont give you it back so just sell the deposit on. only a bit cheaper they wanted 30 quid the last time i inquired about getting one