sip 24 litre Air Receiver

[Stewart]

heres some pics

http://s118.photobucket.com/albums/o98/stewart29992000/

 

[madkayaker]

would be worth getting that inspected before pressurising as there id a bit of rust so it might blow under pressure

 

[Stewart]

Thanks for that info I will look into getting it tested. Sorry if I seem to be asking the same questions but im new to compressors and pipe fittings. As you can see in the pic the tank has a hole where the on off button went so I now need something to go in its place can I just get a blanking nut.

Also at one side of the tank it has a ball valve would this be the best point to use to run a hose to the main compressor ? Does the 2nd tank need a non return valve ?

 

[rtbcomp]

You can block threaded holes with tapered blanking plugs (BSPT) wrapped with PTFE tape (or its modern equivalent) or parallel plugs (BSPP) with locking compound. I prefer the former as they're easier to remove if you need to.

Yes, run the hose to the ball valve, you don't need a non-return valve.

It would help if you put your location (say town & county) in your public profile, you never know, there may be someone on here just down the road who could help you!

 

[Stewart]

Hi rtbcomp,
Thanks for the reply Im in Tadcaster just near york.

 

[series2]

Propane cylinder air receiver

I've justknocked this up for a friend, I know you got a bargain tank Stewart, but I thought it would be good info.

propane cylinder receiver

 

[rtbcomp]

Neat. The thing I would have done differently is to mount the cyclinder upsidedown so moisture doesn't collect.

 

[series2]

I have touble getting all the moisture out of the one in my own setup. I was considering adding a drain cock. My Idea was to drill a hole at the lowest point on the cylinder, and weld in a 1/4" BSP socket and fit a valve. I was just a bit concerned about the safety.

Im not a bad welder, but i wouldn't want to be hit by a flying ball valve!

 

[rtbcomp]

I...
Im not a bad welder, but i wouldn't want to be hit by a flying ball valve!

That's why I haven't fitted drain cocks to mine

I've been running them the right way up for a while, this summer's project (one of many) is to build some sort of frame to hold them upsidedown.

Another method would be to have a long pipe going to the bottom of the bottle, I've done this on a butane bottle by drilling the brass valve and soldering a copper pipe in, with compression fittings to connect to the outside world.

 

[Stewart]

Hey series2 thanks for the info thats helped me understand what I need to do abit better just need to get pipe and fittings and get using it.

 

[Stewart]

Series2 what size pipes and connections did you use for the ball vales, regulator and hose connections ?

 

[series2]

Hi Stewart,

I used 3/4 bsp nipples and ball valves as they were lying around in the garage, then 3/4 - 1/2 reducers to go to the regulator and 1/2 - 1/4 for the airline fittings.

Any good engineers supplier wil have them, and they are pretty cheap. Have a look at bes.co.uk Malleable iron fittings. the online catalogue is a bit of a pain, but if you just move forward from the point the link lands you on you should find most stuff. If you drop them an email they'll send you a paper catalogue.

 

[Stewart]

Thanks for the link when it says 3/8" x 1/4" i take it that means its a 3/8 reduced to 1/4 ?

 

[series2]

that's right, you'll probably need to go 3/4 x 1/2 then 1/2 x 1/4 to get down to standard airline fittings, If you're going to buy a filter/regulator go for a 1/2" one as the smaller ones have a really poor flow rate.

There's a good cheap one from screwfix.

 

[rory1]

so what is the max working pressure of a propane bottle??

 

[series2]

Propane cylinders are tested to around 28 bar.

 

[Stewart]

I found this guide might be usefull to someone

http://www.instructables.com/id/SK1YDD3FRXWGWFB/

 

[tux]

Propane cylinders are tested to around 28 bar.

What about butane?

 

[series2]

Butane cylinder test pressure

Hi

You will find the test pressure on the bottle - it has to be there, usually on the handle, along with the date of manufacture/testing. I don't use butane cylinders as they have an odd size valve fitment.

however, propane has to be at 14 bar to stay liquid in the cylinder so a 100% safety margin is 28 bar, where as butane needs only to be at 2.6 bar. having not looked at the test pressure for butane cylinders, it may be as low as 5 or 6 bar allowing for 100% safety margin.

 

[rtbcomp]

One of my butane bottles is 29 bar, another 32.

You can use them by drilling the valve out (remove it first) and solder a piece of copper pipe in and use compression fittings.