The sealing gaskets of plate heat exchangers have different types of rubber, and the temperature and medium parameters are different. Nitrile rubber is generally suitable for non-polar media such as alkanes and olefins, light and heavy fuel oils, lubricating oil, animal and vegetable oils, hot water, salt water and other media with a temperature higher than -25 and lower than 120 degrees Celsius. EPDM rubber is mainly suitable for superheated water, water vapor, atmospheric ozone, non-petroleum-based lubricating oil, weak acids, weak bases, ketones, alcohols and other media with a temperature higher than -50 and lower than 150 degrees Celsius. Fluorine rubber is mainly suitable for non-polar mineral oils whose temperature is higher than 0 and lower than 180 degrees Celsius, such as pump oil, lubricating oil, and food oil. Three common installation methods for plate heat exchanger gaskets.
(1) The direct paste type is to apply the sealant on the sealing gasket and directly stick it in the installation groove of the heat exchange plate of the plate heat exchanger.
(2) The rubber nail inlay type means that assembly holes are designed on the heat exchange plate of the plate heat exchanger, and the rubber nails are designed on the side of the sealing gasket. After the sealing gasket is placed in the installation groove, the rubber nails are inlaid in the assembly hole in.
(3) The buckle type is to design a buckle on the side of the sealing gasket, and use the buckle to buckle the sealing gasket on the heat exchange plate of the plate heat exchanger.