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Although resin hoses are used for various purposes such as water sprinkling, air, and pharmaceuticals, almost only rubber hoses can be used for gas and kerosene applications.
Can VC and other resin hoses be used?
In conclusion, it cannot be used for liquid fuels such as gas and kerosene.
In ordinary households or equipment, hoses for LP gas (including city gas) will have rubber specs.
When used for fuel, the regulation method will differ depending on the quantity limit stipulated in the Fire Protection Act. In principle, only metal piping will be installed when it is used extensively for business purposes. However, in situations where the usage is small, such as in ordinary households, it is directly stipulated by each fire department. When stipulated by the Fire Department, the judgment standards based on must be approved by the Hazardous Materials Security Technology Association. But getting accredited is virtually impossible, both in terms of expense and traceability.
Judging from the properties of the materials, there are reasons why resin hoses such as PVC hoses cannot be used for gas and fuel. That is, when the fuel is close to high-temperature places such as flammable appliances, it will be easily deformed. Therefore, there is a hidden danger of leakage and rupture. In addition, the flexible plasticizer and other ingredients in PVC hose are easily soluble in oil. So as long as it comes into contact with oily substances, it will harden quickly. Once the hardened hose is bent excessively, the reinforcing wires in it will break. The hose then develops cracks, which can lead to leaks and ruptures.
In terms of safety, resin has a larger molecular gap than rubber. When transporting small molecular gases such as LP gas, the molecules of the fluid will diffuse to the outside through the rubber hose molecules, which is very dangerous. Therefore, resin hose cannot be used for gas transportation. In this case, special hose must be used.
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