Flexible gas lines

hi peterw2
in what situation are your queiry's related too????????????? i bet i'm not the only person wondering??? more imfo in your thread is needed
my house gas ng heater has a flexible hose conection to the wall banette
my outdoor lpg bbq has a flexible hose connection to the gas bottle
and my new westinghouse underbench oven i bought saturday also has a flexible gas hose to connect it to ng
whereas my old chef u/bench oven had a fixed cooper pipe connection so in those situations mentioned here in wa they are all legal
cheers

Peter,
mine has a flex line from the bottle to the regulator. That was from the factory and with gas certificate

Hope they are because mine are flexible, stainless braided hose.

Peter try walking around a caravan showroom or park for goodness sake .! Of course they are legal ,but like many applications they have limits re regulations so try asking what you are on about. .

Honest enough question there Peter.

Tha answer is too right, provided they are made for gas and not water.
You probably can't mix them up any way as the gas ones will have a POL fitting in one end easily signifying it is for gas.

Ignore the angry negative responses, they are irrelevant.
Some people do not know how to be polite.

Cheers, Bruce.

G'day Pete
any pipes for gas that run under the chassis or internally have to be copper the short flexable line from bottle to conection point is okay. That is unless the regulations have been changed? I doubt it.

Gday,
I think you will find it depends exactly where it is, whether it has mecanical protection or not and what State your in.....might pay to ask a gas plumber to be sure.

Cheers

thanks for the replies polite and rude I suspect the limit is 1M,,but surely a joiner is available,,and if the line was in a casing to protect from debris and allowed a flow of air it would be safe,,i will check out the rules and will report back during the week

Fair question, among other things including mechanical protection factors in areas likely to be disturbed/damaged, I think there is a length restriction and I thought it was around the 2m mark. Either way, I am interested in the correct answer as I am in the process of re-running some gas lines on the camper also.
Tim

what part do the 3 twists in the gas line play

AS5601 part 2 is the gas code that your gasfitter would need to be familar with. The length of hose varies depending on where and how they are used. As a guide,
[2.11.1] Hoses shall be of a minimum practicable continuous length .
[2,11,2 ]Hose assemblies shall only be used between the regulator and rigid piping, and between rigid piping and appliance. For caravans connecting pipework between bottle and appliance that exceed 1m shall be made out of a combination of rigid pipe and if required ,flexilbe hose that is connected to the rigid pipe.
[5.2.5] Hose assemblies shall be- [a] of minimum practicable length not exceeding 1.5m - [b] used only between the regulator and rigid piping and between rigid piping and appliances, or where there is only one appliance, directly between regulator and appliance
[5.1.4.1] deals with the requirements of the high pressure piping between the bottle and regulator including hose assemblies.
This info has been provided as a guide only and yes all gasfitting work is covered under various state laws and only licensed gasfitters can work on any gas system so don,t muck around with it as it is not only you who can be impacted when things go wrong but also innocent bystanders .

I have just fitted the third gas regulator to my camper trailer. It's a two stage one and has a flexible line from the bottle to the reg, and from the reg to the stove.
Thought after two failures, I would contact the regulator man to see if there was an issue with the mounting or type of unit being used. Shouldn't be failing that often.
Interesting response. They are saying that flexible lines to the gas regulator are being damaged by the gas. It is causing a black goop to form inside the regulator as a result of the rubber in the flexible line breaking down and this in turn is damaging the diaphragm in the regulator. In some cases in 6 months.

Recommendation is to avoid flexible lines from the gas bottle to the regulator. I have just fitted a copper line from each bottle through a line 1/line 2 switch into the regulator. Have formed a pigtail in both lines to the bottles to give some flexibility and to assist when removing bottle for refill.