In addition to the well-known orange hose assemblies made of rubber or plastic for LPG systems, there are ones made of stainless steel or metal braided corrugated pipes.
Since the regulations stipulate a replacement period for the conventional gas hoses, the question arises whether this also applies to those made of stainless steel?
In order to connect a gas stove in the household or in a large kitchen with a gas cylinder or a pressure reducer, hose assemblies made of stainless steel (metal corrugated hose, stainless steel corrugated tube) or metal braided corrugated pipes are used sometimes. This raises the question whether the usual replacement period also applies here.
As before, the orange gas hose is still dominating in LPG systems with propane, butane and mixtures of the two. These hose assemblies are either made of rubber or plastic and are generally very durable – despite very intensive and hard-wearing use in some cases.
Nevertheless, they are wearing parts and are therefore subject to a certain degree of ageing. They must be replaced at regular intervals in order to minimise the potential hazard caused by gas leakage. For domestic applications, the Technical Rules for LPG (TRF) specify the replacement interval for gas hoses (hose assemblies). According to the TRF, the hoses must be replaced ten years after the date of manufacture (see imprint or hose tag). For commercial applications, the currently valid DGUV 110-010 stipulates a replacement interval of ten years.
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Zu den verwandten BeiträgenIn addition to the orange hose assemblies made of rubber and plastic, stainless steel hose assemblies are suitable and used for LPG systems. GOK offers them, among other things, as part of a kit to connect the gas stove or as a so-called all-gas hose for the gas socket. Of course, after ten years at the latest, the question arises whether the replacement periods from the TRF also apply to the stainless steel gas hoses. The short answer is: No!
In a little more detail: The TRF require the hose assemblies which are manufactured in accordance with DIN 4815-2 or DIN 16436-2 to be replaced; in particular, these include the orange hoses made of rubber and plastic. Hose assemblies made of stainless steel, more precisely: metal braided corrugated pipes, are defined in DIN 3384 or DIN 14800. The TRF do not stipulate a replacement period for this type of hose.
Of course, this also depends on the difference in the material. While materials such as rubber or plastic are subject to ageing and wear, stainless steel is not subject to ageing, or only subject to ageing to a certain degree. The specifications of the respective manufacturer are nevertheless binding and must be complied with, if there are any.
This means that, after ten years, the orange hose assemblies made of rubber or plastic must be removed from LPG systems used in household or commercial sector after ten years. Gas hoses made of stainless steel do not have a replacement period and therefore only have to be replaced if a user or specialist finds a defect.
As stainless steel itself is far more expensive as raw material and is more complex in processing than rubber or plastic, the sales prices of the individual products differ. Users now have the choice – GOK has both solutions in the range.
This blog will never ask members of the public or unqualified persons to make changes to or fiddle around with technical systems themselves.
In accordance with the Industrial Safety Regulation (BetrSichV), a qualified person must take care of a system which requires monitoring.
A qualified person is someone who has the specific specialist knowledge required. This knowledge is gained by way of a professional apprenticeship, corresponding professional experience or current occupational activity.
Please note that the texts are based on information, regulations and standards for Germany. Please always check the rules and regulations in the relevant country of destination and consult specialists if necessary.
