LP Gas Bottle Set Up

I have two 4.5 kg bottles, one with the small orifice and one with the larger one. I can run the smaller one directly into my basic Coleman stove but I have to use use an adaptor to run it into my gas Weber which has a regulator attached. The other bottle fits my Weber hose perfectly. When I run out of gas in one I change over and use the adaptor if necessary.

So it's got nothing to do with the bottle and everything to do with the appliance. The correct gas hose always comes with the appliance so whatever is on the end of that hose will determine how you connect. If I tried to run a direct gas hose to my Weber (no regulator) I don't think it would work very well. The regulator on it is designed to operate with as low a gas flow as possible for a long slow roast.

My simple Coleman stove is basically an on/off device with a minimal amount of pressure adjustment so no regulator is necessary but I could use one if I wished with no real change.

John,

From what I understand, the fitting with the regulator and large left hand thread is for a BBQ or gas ring. Gas burns at low pressure and has larger jets. The flame will be covering a large area. Where the hose fits the stove will be a screw on fitting.

The gas fittings that have right hand fittings and are smaller are used on gas stoves or lights. They have smaller jets that tend to get blocked at the most inopportune time. The gas will burn in a smaller area, make some noise and is ideal for a single small area to be heated.
Where the hose fits to the stove there should be a rubber ring as a seal to stop the gas from escaping.

Depending what type of stove you are getting will depend on what type of jets are fitted. That will have the correct fittings for the type of hose that can be fitted.

Wayne

Hi John,

The differing bottle connections are just that. There is no other significance.

Regulators can be used with either connection size. My stove uses the smaller connection and has a regulator. I have bottles with both connection sizes and simply use a connection adaptor.

Stoves utilising regulators do have several advantages. Because of the lowered gas pressure the stove control valves and jets have larger orifices so there is less incidence of blockage. Also the control valves are less "touchy" and able to be turned down to a low burn setting without losing the flame altogether as often happens with the full-pressure types.

Another advantage of the regulator-type stove is that they are designed to run on the lower regulated LPG pressure, so on those cold mornings when the LPG pressure is low they still burn pretty much as when the bottle is warm. A distinct advantage.

PS: Thanks for the "spare carrier" info.

Cheers
Allan

Hi John,

Basically works like this:
Aus Bottles come with 3 basic thread styles, the 2 you are referring to are POL [large female thread] and a male 3/8LH fitting.

Both these these thread styles on bottles have ability to take regulators.

Regulators are basically used to reduce bottle pressure.
Use of were a reg is used differs from appliance to appliance. eg.
-most cast iron appliances require reg at bottle and low pressure hose to appliance.
-general camping stoves have jets [orifices] in them, which act as pressure reducers, so no reg is required at bottle. Regulation gets done thru jets.
-most camping bbq's req reg at bottle.
-coleman has its own reg valve, which regulates the pressure before appliance. Hence why coleman stoves are the best, they have the best regulation system, best flame burn, and never get blocked jets, like general camping stoves are so prone to.

Hope this helps

Regards
Regan.

Stoves that require a regulator at the gas cylinder are low pressure stoves. They do not require jets before the burner and generally have an infinite control over the burner flame from a gentle simmer to a full flame. The Coleman gas stove is an example of this type.

Stoves that do not have a regulator rely on jets before the burner to restrict the gas pressure. These are high pressure stoves, such as the Primus and Companion range of stoves. They cannot be controlled to the same extent as the low pressure stove and are very susceptible to blockage of the jets by small particles of dust, etc.

I ditched my high pressure stove after the second time it became blocked and invested in the Coleman low pressure stove. It has a small regulator in line between the gas cylinder and the burners and performs very very well indeed in all weather conditions.

Bill

Great info guys, thanks very much.
You have cleared up the issue very well.

Good write up Allan and Bill looks like I'm going to get a new Coleman Stove as now I know why my cheapo high pressure stove keeps giving me the $hits.