air tank

[bigbugga]

ok open question to the population

I have a compressor and if I buy an air tank what do I need to hook it all up so that the tank is always full and ready to use?

[VladTepes]

A Landrover to bolt it to. https://www.aulro.com/afvb/

(sorry couldn't resist)



I would think you'd need a pressure cut out switch so when the pressure in the tank reached a certain point, the compressor turned off.

I'm sure someone else can elaborate.

[bigbugga]

Originally posted by VladTepes
A Landrover to bolt it to. :P

(sorry couldn't resist)



I would think you'd need a pressure cut out switch so when the pressure in the tank reached a certain point, the compressor turned off.

I'm sure someone else can elaborate.

I never said what I was going to bolt it too anyways https://www.aulro.com/afvb/

sheesh one in every crowd

[DEFENDERZOOK]

<span style="color:blue">a pressure cutout switch can be as simple as an oil pressure switch off a falcon....
(or whatever is sitting at the wreckers....) different makes will probably operate slightly
different pressures.....trial and error....</span>

[LandyAndy]

Hi Bigbugga
The common 9lt water fire extinguishers are pretty good,alleady have a car air valve to presurize and are rated 120psi+(you charge them to 120psi so they are probably tested to near twice that)
The cheapest place to buy them is Elders/Wesfarmers as farmers buy ****loads of them for harvest etc as they are mandantory on any machine working in a paddock at harvest.They are the most efficient bit of gear when a farm machine starts a fire,point and squirt high pressure water.Best bit is you fill em up with water,plug the compressor in and you are ready to go again.
Easy enough to get fittings from an Enzed type shop to plumb up to your compressor.
Goodluck
Andrew

[RichardK]

You will need:
Air inlet from compressor, weld in a female thread of the size you require

Another female thread welded in to attach the pressure cutout switch which of course will be wired back to your compressor

And a third female thread to attach a small pressure relief valve set to your maximum operating pressure in case the pressure switch fails and puts the system under overload

Then last but the most important another outlet to deliver the air to where ever you want.

Now, with a little thought and judicious piping you can accomodate the last three in a single header so ultimately you only need to weld in 2 connections.

Hope this makes sense........it's friday night and the red is flowing

[tombraider]

[quote=DEFENDERZOOK]<span style="color:blue">a pressure cutout switch can be as simple as an oil pressure switch off a falcon....
(or whatever is sitting at the wreckers....) different makes will probably operate slightly
different pressures.....trial and error....</span>

This idea worries me a lot!!! 8O

Not to sure I'd skimp on the $$$ for proper parts.

Just be SAFE... compressed air is very dangerous....

Cheers
Mike

[disconut]

Drop into your friendly Opposite Lock store and pick up a proper pressure switch. This will allow you to set the max pressure and the cut in pressure.

Not cheap but for safety's sake, as mentioned above worth the dollars.

I have mine set to 60psi max and cuts in at 45psi. My tank also came from OL, (11litres) and is fitted up under the LH sill on the fender.
Fittings are 1/4" bsp.

Air in, and also tee'd into the pressure switch and pressure gauge.

Air out, to a standard airline quick disconnect outlet

Drain (blow down valve in bottom of tank).

See www.aulro.com/modules.php?name=Forums&file=viewtopic&p=122720&highlight=#122720

Trev.

[bigbugga]

Thanks all.

I feel a lot more informed now, and wont feel like such a fool when asking for what I need.

:?

[incisor]

chreaper to buy a whole compressor from bunnings and just use the tank, fittings and pressure switch... 25l = $98 over here...

[maggsie]

Also don't forget to:
1. Put a check valve on the receiver inlet, otherwise the compressor is working against the compressed air in the receiver. Very important!!
2. A connection between the Pressure switch and the upstream side of the checkvalve to depressure the inlet line when the compressor stops. This is important for electric units as they will draw less load on startup and prevent the chance of burning out the electric motor. Most pressure switches have this sensing point and you should be able to buy a length of plastic tubing with appropriate olives and fittings when you buy the pressure switch.

[abaddonxi]

Don't know if this is a stupid question or not.


If your air tank is going to hold a fair amount of air i.e. enough to fill four tyres is filling the tank from empty to full at one go going to run the compressor a leetle bit hot?

Cheers
Simon

[disconut]

If it is a good quality air cooled compressor, it should be no problem.
The cheapies may have a problem.

Trev.

[bigbugga]

Originally posted by abaddonxi
Don't know if this is a stupid question or not.


If your air tank is going to hold a fair amount of air i.e. enough to fill four tyres is filling the tank from empty to full at one go going to run the compressor a leetle bit hot?

Cheers
Simon

Did think of that.
tyres wont be filled from flat just off the sand, so if I plan right and get the right size tank I will get almost all done.

Also from what I have read here if I set the system right it will start filling the tank back up again before it is totally empty.

Someone correct me if I am wrong

[disconut]

Originally posted by bigbugga
Also from what I have read here if I set the system right it will start filling the tank back up again before it is totally empty.

Someone correct me if I am wrong

Thats correct. If you set the switch up to cut back in at say 45psi, it will inflate a tyre directly from the pump. (the tank will just be a volume that is pumped up at the rate of the tyre inflation) for every psi over 45.

If you start with 100psi in the tank, it will do a few tyres before cutting in again. (dependent on tyre tyre size and inflation pressure of course).

Trev.