Fluorine-lined Valve Manufacturers And Suppliers
Rational selection and application of fluoroplastic corrosion-resistant valves of interest, please experience the following precautions for your reference, based on the application fields of many users for many years.
Valves made of corrosion-resistant fluoroplastics have been used to contact and other media corrosive equipment such as petroleum, chemical, pharmaceutical, metallurgy, electricity, acid and strong, widely and effectively use fluorine. How, if you choose, choose the valve fluoroplastic corrosion-resistant valve to meet the conditions to be used, in a medium, temperature, pressure, pressure, the following items, many years of field application experience:
Fluoroplastic valves for medium temperature: the use of medium temperature, fluoroplastic valves, F46 and various jade groups using fluororesin (FEP), 150 ℃ ~ 150 medium temperature (exceeding short circuit) long-term use cannot. ° C, the temperature must be controlled at 120 ℃, otherwise, the valve lining of the F46 of the various components related to the valve, the amount of leakage, therefore, it is easy to soften and deform.
° C, if the temperature of the temperature is used for a short period of time, the medium-term long-term temperature is lower than 180℃ to 150 or less, choose other fluoroplastics, fly ash, fly ash is fluororesin lining F46 more expensive than the lining.
2, do not generate negative pressure. Fluoroplastic valve negative pressure, if necessary, to avoid negative pressure in the pipeline, caused by the failure has been sucked easily, from the shell closed valve open, (protrusion), may cause the valve element cavity fluororesin layer.
3, you need the pressure, the pressure is controlled within an acceptable range. Lining plastic, valve, seal, bellows stop valve. Leading to a broken bellows bellows material, polytetrafluoroethylene, pressure, pressure, easy.
Use bellows seal valve fluoroplastic conditions, pressure, you can replace the polytetrafluoroethylene gasket seal pressure difference is large.
Use Lined Valve media, close the valve core table of the operation of the polytetrafluoroethylene bellows wear or fluororesin layer, so that the valve is open, hard particles, crystals, impurities do not. Hard particles, crystals, impurities, and choose, valve, valve seat, you can switch between Hastelloy media.
5. The correct selection of flow control valves and fluoroplastics (CV value) should be required. The selection of valve diameters must be based on the technical parameters of the valve path (CV) that is too large, so that the valve opening is bound to be open for a long flow, in order to calculate the degree of valve vibration selection you need, leaving a long-term impact on the valve core rod in the media, and the valve core, due to the influence of the media on the lever, makes the stem easy to combine and run fractures even when it is less than the pressure of the medium.
For the selection of various types of fluoroplastic valves, it is necessary to understand how to use the technical conditions in order to choose a good use to improve the service life of the valve and learn. If conditions beyond the technical range occur, the manufacturer shall be consulted and appropriate measures shall be taken to solve them.