Small Gas Bottles: 9kg Gas Bottles (8.5 kg gas bottle) – 4kg Gas Bottle Dimensions & Weight

The 9kg gas bottle (8.5 kg gas bottle) and the 4kg gas bottle sizes (3.7kg gas bottle) of small gas bottles, including LCC27 gas bottles in both gas bottle sizes, are the most common small gas bottle sizes for a BBQ  and camping gas bottle sizes. Get 9kg gas bottle size in the new LCC27 gas bottle version so no LCC27 adaptor is needed. We also have the 4kg gas bottle in LCC27 gas bottle version.

9kg Gas Bottle Size (8.5 kg gas bottle) – BBQ Gas Bottle

The 9kg gas bottle size (8.5 kg gas bottle) is the most popular small gas bottle for BBQ and camping gas bottle sizes.  

9kg gas bottle dimensions are approximately 315mm in diameter, 475mm in height and 17.64L of capacity.

9kg gas bottle (8.5 kg gas bottle) empty weight (tare weight) is approximately 7.8 to 10.4 kg.

But, how much does a 9kg gas bottle weigh when full?

9kg gas bottle weight when full is approximately 16.8 to 19.4 kg.

A 9kg gas bottle size contains 441MJ of energy.

All 9kg gas bottle size specifications are approximate.

4kg Gas Bottle Size (3.7kg Gas Bottle) – 4kg Gas Bottle Dimensions: Camping Gas Bottle

The 4kg gas bottle (3.7kg gas bottle) at SWAP’n’GO is the other small gas bottle, and is chosen as camping gas bottle sizes because of its compact size and light weight, making it easy to transport. The 4kg gas bottle is the small gas bottle size favoured as a camping gas bottle for camping gas stove, camping gas cooktop and camping gas heater applications. 

4kg gas bottle dimensions are approximately height of 345-450mm, a width of 240-265mm and a capacity of 7L.

4kg gas bottle weight when full is in a range from 8.5kg to 10.6 kg.

4kg gas bottle empty weight (tare weight) is in a range from of 4.5 to 6.6kg.

A 4kg gas bottle size contains 196MJ of energy.

All 4kg gas bottle size specifications are approximate.

9kg Gas Bottle (8.5 kg gas bottle) – 4kg Gas Bottle Dimensions & Weight Chart

9kg gas bottle (8.5 kg gas bottle) and 4kg gas bottle dimensions and weights shown are approximate. Actual gas bottle dimensions may vary as 4kg gas bottle and 9kg gas bottle size varies by manufacturer. Capacity is based on safe filling volumes of 3.7kg and 8.5kg, taking into account possible undersize imported gas bottles.

Have questions? See our SWAP’n’GO BBQ GAS FAQs

Small Gas Bottles: 9kg Gas Bottle vs 8.5kg Gas Bottle & 4kg Gas Bottle vs 3.7kg Gas Bottle

The filling of small gas bottles like the nominal 9kg gas bottles as an 8.5 kg gas bottle was a safety initiative of the Australian LPG industry.

The same is true of the 4kg gas bottle being filled with 3.7kg of gas. But why?

Unfortunately, there are many small gas bottles that are labelled as a 9kg gas bottle or 4kg gas bottle that are actually manufactured undersize, with less than the labelled capacity.

This is a result of the manufacturing and design variances amongst the many manufacturers of small gas bottles that are imported, into Australia, from many countries around the world.

Surprisingly, Australia has no mandatory standard sizing for these small gas bottles as BBQ gas bottle or camping gas bottle sizes, so they are all approved for sale.

Filling undersized small gas bottles to a full 9kg gas bottle or 4kg gas bottle, thus leaving less than 20% ullage (see image), would create an overfill, which would be a major safety issue. Cold burns, fire and even possible explosion could result.

The solution was to take into account the cylinder size variations and standardise on 8.5 kg gas bottle and 3.7kg gas bottle refills.

This allows for the size variances between small gas bottles and prevents any unsafe overfilling.

To make sure that consumers are fully informed, these small gas bottles are labelled accordingly.