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pplication and difference between plastic and stainless steel valve valve

Ningbo Fenfa Valve Co.,Ltd | Updated: Oct 14, 2016

Main materials for stainless steel valves stainless steel casting or forging, machining of raw materials, and has good corrosion resistance, wear resistance, high temperature, high pressure, and so on. Widely used in chemical plants, power plant is a common phenomenon. Stainless steel valves stainless steel ball valve, stainless steel valve, stainless steel valve, stainless steel check valve, instrument valve, stainless steel valve, stainless steel needle valve, plunger valve, stainless steel valve, stainless steel valve drain valve, stainless steel valve series stainless steel products. Stainless steel valves are generally used in nitric acid, acetic acid, caustic soda, hydrochloric acid, oxygen, industrial media generally can be used in high-temperature or room temperature corrosive liquids or gases have an important role. Plastic valves range is smaller, usually used for corrosive media, but must be at room temperature and low pressure temperature condition, do not use high temperature or high pressure industrial pipe. Plastic valves with a light weight, corrosion resistance, not attracts dirt, plastic valves with integrated Plastics piping connections, in the scope of work you long life. Plastic valves are generally plastic Diaphragm valves, plastic globe valve, ball valve, butterfly valve, species and relatively less compared to stainless steel valves, plastic valves generally use temperature is-40-140 degrees, commonly used plastic materials include ABS, PVC-u, PVC-C, PB, PE (PE100,, PE-X,, PE-H,, PE-R), PVDF, etc. Stainless steel valve materials are CF8/304, CF3/3304L, CF8M/316, and CF3M316L, and 0CR18NI9, 0CR18NI9TI, 321, 310S 2520, and other, temperature is-196-800 degrees. Cryogenic units must do, of course. Stainless steel valves and plastic valves in the field of transport, stainless steel valves weight the high cost, cheap shipping cheap plastic valves. Selection of materials is directly related to life and effect temperature and corrosive this one has great access. High temperature corrosion resistance is also reduced, and selected materials, corrosion control media, effectively improve the service life of the valve. Polyethylene is a non-saturated fats, which determines its water and has good corrosion resistance of various chemical inertia. Stainless steel valve is the most common CF8/304 materials, using the most widely followed by the CF8/316 material. PVDF pressure resistance and excellent resistance to creep, PVC melt temperature of 165-185 degrees Celsius. Stainless steel 304 and 316 materials used within the General temperature-40-600 degrees, used in a corrosive medium is-40-200 degrees.

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