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  • Last Updated: 26 April 2022

How to Operate Home LPG Gas Bottles

So, you’ve just moved into a new home that has LPG gas.
You go outside and look at the two 45kg gas bottles, with all the valves, connections and other gear, and you wonder… “How does this all work?”
Good question!  And here are some of your answers…

LPG Turns from Liquid to Gas

LPG – Liquified Petroleum Gas –  is stored under pressure as a liquid in a gas bottle.

It turns back into a gas when you release some of the pressure in the gas bottle by turning on your appliance.


How to Turn Off-On Gas Cylinder Supply to Your Home

To turn off your home gas cylinder, turn the round valve handwheel located on top of the cylinder clockwise until snug by hand only (don’t over-tighten). If you have two cylinders (or more), you will need to turn them all off by repeating the valve closing procedure. To turn the gas cylinders on, turn the valve handwheel anti-clockwise 2 or 3 turns (do not open hard against the stop).


Your Gas Regulator Controls the Flow

A regulator ensures a consistent pressure is safely delivered from the gas bottle to your appliances.

Regulators have a diaphragm, which is a flexible rubber disc that responds to pressure changes and functions to regulate the flow of gas at the proper pressure.

For more info, please see Home LPG Gas Regulators & Fittings

Two Gas Bottles So You Don’t Run Out

In Australia, you would typically have two 45kg gas bottles.

If you order when the first one runs out, you will have a continuous supply without running out.

The two gas bottles are connected by tubing to a changeover valve that determines which gas bottle is currently in use.

Changeover valves can be automatic or manual.

Automatic Changeover Valve

Automatic changeover valves automatically switch from one gas bottle to another, when one is empty.

There are different manufacturers and models of the automatic valves but they all have a visual indicator, which typically turns red when the first bottle is empty.

This is when you need to order gas, before the second bottle runs dry.

Manual Changeover Valves

With manual changeover valves, you need to manually reset the valve when the first bottle is empty.

The changeover valve has a lever which must be set to point to the gas bottle in use.

To use a manual changeover valve, you follow these three steps:

1. Turn the empty gas bottle valve clockwise to CLOSE the valve.
2. Move the changeover valve lever to point towards the second gas bottle, which will hopefully be full if the previous resident ordered gas when they should have.  
If not, just give us a call.
3. OPEN the valve on the full gas bottle by turning it anti-clockwise.

Always Order Your LPG Right Away

Don’t forget to order a replacement gas bottle when you switch over between bottles.

This is the best way to make sure you never run out of gas.

8 Tips for Never Running Out of LPG Gas Again

We know that there is nothing more inconvenient than being out of home LPG gas.
Here are a few handy tips, if you are a gas bottle exchange customer, to help you avoid running out:
1.  Always order gas as soon as the first bottle runs out.

Don’t wait until the gas bottles are both empty or near empty.

Follow this advice and you are virtually assured to never run out of gas.

2.  Remember to order sooner, rather than later, during the busy winter season.

3.  Remember to check your gas bottles more often in cold weather, especially if you use a gas heater or gas log fire.

Even your water heater has to work harder in cold weather, as the incoming water is colder.

4.  Having additional house guests can also increase your usage if you have gas hot water.

Remember to check more often so both you and your guests avoid cold showers!

5.  If you only have one gas bottle attached to your home, you may wish to consider adding a second gas bottle.

Unless you are on automatic tanker delivery, you will either run out or have to call for a gas bottle exchange before using up all of your gas.

These are both situations you would surely like to avoid.

A second bottle solves the problem and is particularly wise if you use your gas for hot water and/or heating.

6.  If you are an Elgas customer, make sure we have your Mobile Number so you receive Gas Check Alerts by Text (SMS).

These are sent automatically, by our computer, based on your past gas usage.

With Gas Check Alerts, you will never forget to check your gas bottles again.

7.  Remember to increase how often you check your gas bottles if you install additional gas appliances.

8.  Also, be certain to tell your supplier if you install additional appliances, especially if you are on automatic tanker delivery, so we can adjust your delivery schedule.

Follow these tips and you should enjoy using of your gas appliances without interruption.



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The information in this article is derived from various sources and is believed to be correct at the time of publication. However, the information may not be error free and may not be applicable in all circumstances.