What are the characteristics of plastic flow switch?
Time： 2020-02-20 07:02:25 Click：0
At present, there are many plastic flow switches in the market. Not only because it is cheap, but also because of the universality of its use scenarios. However, for some corrosion-resistant fields, some special-made plastic flow switches work well.
First, let#39;s talk about the characteristics of ordinary plastic flow switches:
At present, the plastic flow switch on the market is mainly PA66 nylon plastic, and its material is popular among users because of its low price. However, research has found that the comprehensive mechanical properties of PA66 and its composites in chemical media are significantly reduced ; and that nylon materials cannot withstand strong acids and alkalis, such as plastic flow switches made of nylon that are in contact with concentrated sulfuric acid, almost Instantly dissolved in concentrated sulfuric acid, the nylon plastic flow switch instantly melts into powder. Therefore, the nylon flow switch can be used in ordinary slightly corrosive fluids, but its performance is slightly insufficient in high-strength corrosive environments. However, in conventional non-corrosive fluids, the advantages of plastic materials are obvious to all.
For example, this plastic housing 6-light thermal conductive flow switch NK300 of plastic housing has a unique conical probe design, which can effectively prevent the entanglement of entanglement in the medium. Full waterproof housing design, unique waterproof adjustment knob, can be adjusted arbitrarily without removing the sealing screw, convenient and more reliable. Not only that, the characteristics of gas-liquid dual-use make it applicable to pneumatic and hydraulic systems, it can be used to monitor the interruption of circulating water, cutting fluid and lubricating oil, and the idling protection of the pump.
Next, let#39;s look at a flow switch product made of a special material.
The material of this switch is a special Teflon material, Teflon composite material, which can make the flow switch almost free of chemicals, and can withstand all except molten alkali metal, fluorinated medium and sodium hydroxide above 300 ℃. The effects of strong acids (including aqua regia), strong oxidants, reducing agents, and various organic solvents can protect parts from any kind of chemical corrosion. Widely used in electric power, chemical industry, acid making, alkali making, smelting, rare earth, pesticide, dye, medicine, papermaking, electroplating, electrolysis, pickling, radio, chemical foil, scientific research institution, national defense industry and other industries. Acid, alkaline, oil, rare noble liquid, toxic liquid, volatile corrosive chemical fluid medium.
Although the flow switch of this material is powerful, due to the rarity of the material, few companies around the world currently produce this product. Buying is not easy.
Of course, there are many flow switch products on the market, and the materials are quite different. This article mainly discusses the above two materials. When purchasing, pleaseaccording to the actual useconsult the staff.
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