1. It can only be used on low-pressure vapor pipelines. Because the PTFE will become soft after being heated, the pressure will break through.
For example: a company has a medium pressure vapor pipeline, because the high pressure gasket did not arrive, the maintenance personnel did not understand the use of tetrafluoride gasket, very slow to open the valve is not much big deal, once the valve opened a little faster, the whole pipeline as long as it is a tetrafluoride gasket, all to break through. Fortunately, no one was hurt!
2, to see what is the steam, the temperature is high or low, if it is greater than 200 degrees (HG20592 is 250 degrees), generally we do not choose 4F, as mentioned above will become soft, and 4F is generally used in corrosive material pipelines, the general steam pipeline can choose asbestos rubber gaskets, steam pipelines in the conditions of meeting temperature pressure, such as over-selecting 4F is not no, but a little unreasonable, see HG20592 series of standards.
It is recommended that users check the standards themselves before using them.
3, the pipe temperature of more than 180 ° C is not recommended, for steam, that is, to reach 10 kg of pressure, it is not recommended to use, although PTFE at 220 ° C to melt, but more than 100 degrees on the soft, detailed can refer to each product PT chart.
Othello tetrafluoro gaskets
Performance parameters of Othello Seal OTH-2100 PTFE Gasket:
Appearance color: white.
Applicable temperature: -180 °C ~ 250 °C
Applicable medium: ph 0-14
Conventional size: 1524mm*1524mm Thickness 1.5~5mm
Scope of application:
Suitable for temperature and pressure alternating violent sealing parts, it is a static sealing element at the flange connection such as pipes, valves, pumps, heat exchangers, towers, manholes, hand holes, etc. By changing the tensile force of the winding steel belt, the density (hardness) of the winding gasket can be changed to meet the needs of various application parts, which are widely used in petrochemical, mechanical, electric power, metallurgy, shipbuilding, medicine, atomic energy and aerospace industries.
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