Air Compressor Non return valve

Thanks Bob,
Once I thought a bit more about it I decided to do a Google search and found a mob called SMC Pneumatics. They have a web site:
www.ferret.com.au
They have various devices ones of which I have ordered over the phone. Cost will be $41- + GST and postage from Adelaide.
They have a Sydney office too.
Phones are Sydney = 02 9354 8222
Adelaide = 08 8346 1322
Thanks for your idea, but trucking places are a bit thin on the ground here.
Cheers,
Roachie

Hi
SMC will be able to help. The non return valve might have been a bit techo for them, it is also called a check valve, or non return check valve.
I work with alot of this stuff, if you have problems getting one, email me and i will post you one. All i need is a thread size, or if you are unsure, measure the diameter of it and i will work it out.
Andrewwheredayathinkwer mike?

Thanks Andrew and Eskimo for your assistance.
Living in the bush is great, but these are the rare times when it would be nice to be able to drop into one of these places in the big smoke and just pick up what I need.
Is there another name for what I call an "air solenoid"? It's the type of 12volt activated , momentary contact switch which allows an immediate blast of compressed air to activate my air horns. The set of Grand Vitesse horns I have, have got 2 of these; one above each trumpet. It would be nice to have a couple of spares; plus I also have another, larger horn which needs one of these if I ever decide to fit it.
I could never go back to using those piddly FIAMM type air horns after having used these truck/train like jobbies.
Thanks for any assistance.
Cheers,
Roachie

an electrical operated valve for passing of fluids or air are commonly called "solenoid valve". Just make sure that it has a coil for the desired voltage and the unit is capable of allowing the correct ammount of volume thru the body of the valve when energised.
as a general rule only : if the feed line is 1/2 inch then use a 1/2 inch valve. But idealy the valve should be selected on volume needed to pass thru as these types of valves (some more than others) can have high pressure drops (resistance). Wow, am I cute! The extra long legs are built-in prevention against ducks disease. Great looks and a real goer. Doesnt waddle along like some.

GT:
Thanks mate. My 3lt tank is bolted vertically to the top left side of my cargo barrier, just above the compressor. It has 3 holes facing downwards, one of which is used for a hose about a metre long back to the rear of the cargo area. I used to only have a RYCO snap fitting on this, but on the weekend I also fitted a "T" piece to the RYCO and then fitted a pressure release valve. Before this new fitting was installed, I used to occasionally snap my air "gun" into the outlet and drain the tank. Being lower than the tank, gravity would ensure that any water would be expelled.
Of the other 2 holes in the tank, one is to (or from) the compressor and the other leads up the front of the truck using thinner 1/8" hard plastic air hose with push-on fittings.
Cheers,
Roachie