What kind of gasket is suitable for use on fire hoses?
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:) As the title suggests, discussions are welcome
Our company uses asbestos gaskets. Personally, I think asbestos gaskets will suffice.
For water pipes at room temperature, rubber ones will suffice.
Gaskets are materials used to provide sealing within equipment, pipes, flanges, and similar components. The selection of gaskets primarily takes into account factors such as temperature, pressure, and the medium. Metal gaskets are particularly suitable for applications with uneven loads, where the bonding force tends to weaken, as well as in situations involving periodic changes in temperature and pressure, or exposure to shocks or vibrations. Graphite gaskets and similar products are suitable for harsh operating conditions, and are widely used in pumps, pressure vessels, heat exchangers, condensers, compressors, refrigeration units, etc. Asbestos gaskets are suitable for sealing water, steam, oils, solvents, and moderate acids and alkalis. It is mainly used for sealing in medium and low-pressure flange connections. The pressure in fire water pipelines is generally not very high; unless there are other specific requirements, asbestos gaskets are sufficient.
Theoretically, asbestos gaskets would be sufficient, but since they leak easily when soaked in water and are difficult to clean when replaced, their use is no longer recommended here
It depends on what kind of fire protection system is being used. If it is a low-pressure fire water system, asbestos gaskets are sufficient; if it is a high-pressure fire water system, it is recommended not to use asbestos gaskets, but rather polytetrafluoroethylene gaskets
Rubber gaskets for low pressure, PTFE gaskets for high pressure. It’s better to avoid asbestos; it’s a carcinogen! Our factory no longer uses it
It is recommended to use metal wound gaskets at the valve connections. Valves in fire protection systems are prone to internal leakage over time; using asbestos gaskets makes it difficult to disassemble and install the valves over time as well.
Metal gaskets are particularly suitable for applications with uneven loads, where the bonding force tends to weaken, as well as in situations involving periodic changes in temperature and pressure, or exposure to shocks or vibrations. ! C0 }. L) o2 G5 y’ r Graphite gaskets and similar materials are suitable for harsh operating conditions, and are widely used in pumps, pressure vessels, heat exchangers, condensers, compressors, refrigeration units, etc. + `+ D1 K8 `& Y# s) d, r; x( ~ Asbestos gaskets are suitable for sealing against water, steam, oils, solvents, and moderate acids and alkalis. It is mainly used for sealing in medium and low-pressure flange connections. 6 D: It is necessary to determine what type of fire suppression system is being used. If it is a low-pressure fire water system, asbestos gaskets are sufficient; if it is a high-pressure fire water system, it is recommended not to use asbestos gaskets, but rather polytetrafluoroethylene gaskets