Nitrogen gas kit, comes with cylinder, regulator and hose, available Australia wide, in D & C size.

  Call us on 0404 677 187

No Cylinder Rental – No Contracts

Rentfreegas is a Gas company based in Sydney NSW that sells cylinders, gas and equipment on a rent-free and delivery free basis. We specialise in Argon, Mig gas, Oxygen, Nitrogen, Carbon Dioxide and Helium. We supply Speedgas cylinders as well as regulators, high pressure hoses, fittings and other accessories. With over 20 years in the industrial gas industry we can help you not only save money on rental, but help you make specific gas mixtures and source gases internationally.

We aim to provide great service to all customers and if we cannot help you point you in the right direction to get the support you need.

Own your cylinder!

Call to talk to us now – 0404 677 187

New & Full BottleCDEG
Argon 5/2$200$299$480$599
CO2$200$340 n/a$599
Helium$210$360$460 n/a
Argon 5/2$70$100$160$199
CO2$70$85 n/a$120
Delivery free Sydney
welding gas cylinders


Nitrogen Gas Prices, Disposable v High Pressure

Nitrogen Gas Prices, May 2017 We have talked before about comparisons between disposable Nitrogen and high-pressure industrial nitrogen cylinders and in that post we indicated the various set-up costs along with the annual costs of nitrogen based on the volume of nitrogen used. In this post we are providing pricing information on the disposable nitrogen bottles and comparing them with high-pressure nitrogen bottles that are supplied by companies like Rentfreegas. Disposable Nitrogen Bottles All Nitrogen cylinders must state their volume and pressure on the cylinder, as this is a requirement within Australia. The pressure of the disposable nitrogen bottles (shown below) is 10,000kPa with a nitrogen gas volume of 0.22m3, and tare is 1720g. The cost is somewhere between $83-$96 per bottle depending on the supplier. Nitrogen Disposable Bottle Volume 0.2m3 (2.2L)   High-Pressure Nitrogen Bottles Nitrogen supplied in industrial high-pressure cylinders have a greater volume than the disposable bottles due to the pressure being greater within the cylinder. The fill pressure on the C size bottle is 200bar (or 20,000kPa) which is twice as great as the disposable bottle fill pressure, and the cylinder contains 600 litres of nitrogen. The C size bottle is a standard Australian approved cylinder and for nitrogen comes with a Type 50 valve outlet so your existing regulator will fit. The refill cost is $70 including postage to you. To do a fair comparison you need to also include the cost of return postage for the sending the empty back to us (approx. $20) and therefore the cost is $90. So, for a similar price of around $90 you can have 3 x times as much gas. There is a first cost to purchase the cylinder, with gas and delivery to you, and that is $220. The weight of the cylinder full of gas is around 6kg and it stands 55cm tall (as shown below). C Size (600L)   If you are planning on using nitrogen over the next few years then the investment in your own cylinder [...]

HVAC Nitrogen Regulators

Nitrogen Regulators for Refrigeration & HVAC Industry High Pressure & High Flow Regulator The single stage high flow Nitrogen regulator (below) with Side Entry and Type 50 valve outlet we supply is supported locally and designed for high-pressure testing in the Refrigeration, Heating and air conditioning market. The maximum flow rate is 150m3 per hour, the maximum inlet pressure is 30,000kPa and the maximum outlet pressure is 6000kPa. The pressure gauges comply with Australian Standards (AS 4706). The regulator comes with a safety relief valve and gauge protectors around the outsides of the pressure gauges.   Discounted to $350 delivered (excludes WA)       Standard Nitrogen Regulator (below) The second regulator option is 0-1000kPa single stage, side-entry regulator with dual valves and Type 50 outlet connection. The first gauge, nearest the cylinder connection, allows monitoring of the cylinder contents and the second gauge (to the right of the first gauge) on the low-pressure side, allows you to reduce the pressure to the desired working pressure for your process. Discounted to $99.00 (free delivery)         Nitrogen Gas Bottles We can also supply nitrogen in high-pressure bottles (200bar) that stand 55cm tall, weigh 6kg and contain 500 litres of compressed Nitrogen to most places in Australia. The cylinders connect directly to the regulators above. Please remember that disposable nitrogen cylinders have a different connection and therefore require a different regulator. Thank you  

HVAC Nitrogen Gas bottle – Australian Cost Comparison

Dry Nitrogen Tank with No rent HVAC businesses in Australia can now access Nitrogen in many forms. They can purchase industrial high-pressure cylinders from the big gas companies like BOC, they can purchase disposable nitrogen bottles from Bunnings and they can also purchase rent free Nitrogen tanks from various suppliers.Even customers in remote Australian regions have access to C size high-pressure Nitrogen bottle that comes to your door via TNT or Australia Post. The key in deciding what cylinder size, supplier or model to use (that is, whether to rent or buy a bottle) is to understand how much gas you use and then look at the volume of the each cylinder, whether disposable or high-pressure. Option 1 - If for example you only use small amounts of nitrogen (say 2m3 p.a.) then the investment in a disposable nitrogen regulator  (approx. $70) and disposable cylinders  (approx. $400) could be the most cost means of buying nitrogen. Please remember that these regulators for disposable cylinders, do not work with Industrial high-pressure cylinders, which have a Type 50 valve outlet. Outlets like Bunnings sell disposable nitrogen cylinders. Option 2 - If however, you use a medium (for example 2m3-10m3) amount of Nitrogen then a rent free Nitrogen bottle could be the most cost effective means of buying Nitrogen, (expected cost $550). Regulators cost between $100 for 0-1000kPa or $350 for the high pressure & high flow regulator. Option 3 - If you are a large user of Nitrogen and have service vehicles on the road, then the most cost effective way to purchase Nitrogen might be through someone like BOC where the cost of gas is cheaper, and the rental costs balance out with buying your own bottle. If you have any questions feel free to send us a message at or call us on 0404 677 187.  

By | April 18th, 2017|Categories: nitrogen gas bottle|Tags: , , |0 Comments

Carbon Dioxide Regulators, Beer Gas

Carbon Dioxide (Beer gas) Regulators We have been able to negotiate some competitive pricing on our Carbon Dioxide or beer gas (CO2) regulators and we want to pass these savings directly back to our customers. So for a limited time, we are offering the Beer gas regulators at the following price. The regulators have standard Australian connections, which is Type 30 for Carbon Dioxide, so they will fit your existing Australian cylinders. If you are interested in buying a cylinder and not renting, then give us a call on 0404 677 187, as we have a few options for you. The regulators are single stage with side-entry, and are for use with Australian Approved CO2 bottles.   Carbon dioxide regulator - $59.00 (includes free delivery). The Inlet pressure is 20,000kPa and outlet pressure is 400kPa.     If you would like to buy multiples of each then please give me a call and we can work on a discount for you. Best regards Simon. 0404 677 187

By | March 31st, 2017|Categories: Regulator|Tags: , , , , |0 Comments

Nitrogen Regulators – Special Price

Nitrogen Regulators - Reduced Price  We have been able to negotiate some competitive pricing on our Nitrogen regulators and we would like to pass these savings directly back to our customers. So for a limited time, we are offering the Nitrogen regulators at the following discounted price.  The regulators have standard Australian cylinder connection for Nitrogen, which is a Type 50 outlet, which means that the regulators will fit directly on to your existing cylinder. If you don't have a cylinder, email or call us as we have 2 possible options to help you obtain a bottle of Nitrogen. The regulators are single stage with side-entry, and are for use with Australian approved Nitrogen cylinders.   Nitrogen regulator - $94.00 (includes free delivery). Single stage brass regulator with dual valves, and maximum inlet pressure of 20,000 kPa     If you would like to buy multiples of each then please give me a call and we can work on a discount for you. Kind regards, Simon - 0404 677 187

What is MIG Gas?

What is MIG and what does it mean? MIG stands for Metal Inert Gas. This is a commonly used term in the Welding industry in Australia. MIG Gas refers to a gas that is inert (inert means 'still') and when we use that word ('inert') with gas it implies that the gas is inactive or non-reactive. So that gas, such as Argon, can be used in the process and not react with the other elements. The MIG Gas is used as a shielding gas to prevent Oxygen and moisture from getting into the weld. MIG Gas Mixtures The most common MIG gas supplied in Australia is a blend of Argon, Carbon Dioxide and Oxygen and this mixtures of the gases vary. There is normally a high concentration of Argon 92-95% with the remaining gas mixture mostly carbon dioxide (3-5%), with a low percentage of Oxygen (1-3%). The MIG gas mixture we supply is 93% Argon, 5% Carbon dioxide and 2% Oxygen. MIG gas advantages Welding with MIG gas is great, because: Welding a large number of metals and thicknesses is easy The welt bead is good Weld splatter is minimised Welding with MIG gas is easy to learn and master. MIG gas disadvantages Welding with MIG gas can be limited for very thick metal MIG gas welding is less portable than arc welding The weld is slightly less controlled than TIG welding. If you have not welded previously or are getting back into the game, remember it is best to seek advice and guidance first. The key areas of interest, are what type of metal are you welding? how thick is it? what is the best Gas for this process? have I got the right equipment? and then always do a test run. Doing some research on the how to hold the welding torch, and the angle, as well as watching some Youtube videos might also be a good idea. Happy welding.

By | March 13th, 2017|Categories: MIG, MIG Gas|Tags: , , , , |0 Comments