Should the medium be considered when choosing a gasket?
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Should the medium be considered when selecting gaskets? Will the medium be a condition that affects the selection of gaskets?
Of course it will. For example, organic solvent media may not be able to use rubber pads as they will be dissolved.
The medium needs to be considered. If the medium requires cleanness, choose PTFE. The requirements are not very strict, graphite can be used. It depends on the situation. For high temperatures, use graphite and for low temperatures, use PTFE. Different flanges use different types of gaskets, please refer to HG20592-20635-97 (steel flanges, gaskets, fasteners)
Of course, there must be a difference. Not only must the medium be distinguished, but also appropriate gaskets must be selected for different temperatures and pressures.
Considering the temperature and chemical characteristics of the medium, organic engineering multi-purpose graphite asbestos gaskets and inorganic engineering PTFE can also be used.
I usually don't have much information on hand, so I didn't pay attention to these. I just know that it is related to the pressure, temperature and the sealing surface of the flange. Is there any information specifically introducing this aspect of the compatibility with the medium?
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No, I just have this information: Use rubber pads or asbestos rubber pads for water systems. Use rubber pads or PTFE pads for pure water systems. Use asbestos rubber pads for compressed air and nitrogen. Use asbestos rubber pads for steam systems. Use metal graphite wound pads. For organic material systems, use PTFE pads for suction air ducts.
The selection of gaskets should consider 5 aspects: size, temperature, application, media, pressure. It can be simply recorded as STAMP: size, temperature, application (flange type), medium pressure
Of course, the medium must be considered. If the medium in contact with the gasket corrodes the gasket, the gasket will not be effective.
Look for corrosion data sheets and experience.
When choosing a gasket, you must consider the medium, because the medium is flammable, explosive, and toxic. Please refer to HG20580~20585-1999 for selection.
When choosing a gasket, you must consider the medium, because the medium is flammable, explosive, and toxic... Please refer to HG20580~HG20585-1998 for specific selection of various characteristics.
Of course, the compatibility of the gasket with the medium must be considered, and sometimes the relationship with the flange must also be considered. Choose a gasket material that is positive to the flange. If the gasket is corroded, sacrifice the gasket to protect the flange. Select a flange that is positive to the gasket, and the flange is corroded.
Check the gasket standards of HG20610-97 and HG20631-97, and consider the medium pressure path temperature gasket type of the pipeline.
Of course it will. Various factors such as temperature, pressure and corrosion forms should also be considered.
The medium must be considered. For example, nitrile rubber will melt when encountering special media.
The relationship is relatively large, and it is also related to the material selection of the metal parts of some gaskets.
The main considerations are working pressure, temperature, medium and flange sealing surface form.
There are many comprehensive factors that need to be considered