Glass fiber reinforced polypropylene diaphragm valve is introduced

Glass fiber reinforced polypropylene diaphragm valve is for chemical production industry intermediary epicuticular equipment and pipeline corrosion is serious and design effective a valve door products. It has high strength, corrosion resistance, long service life, low price, more than a decade has been the national chemical industry, metallurgy, light industry, food, chemical fiber, medicine, pure water, etc. Widely used in industrial production, bring good economic benefits. The nonmetal material valve door products has now become a localization, standardization of corrosion resistant valve door series products. In the last century, our country has introduced complete sets of equipment, petrochemical, chemical, chemical fiber and other engineering imported this kind of valve door at the same time, then called polypropylene valve door, after the analysis by the research department inspection, including glass fiber, such as filling material as polypropylene reinforced material, reinforced pp is generally called RPP diaphragm valves (diaphragm valve market 强化了丙烯隔膜值) 。 To exact name, non-metallic chemical equipment in 1994, the national standardization technical committee meeting to review the chemical industry standard, the formal name for the glass fiber reinforced polypropylene diaphragm valves ( 玻璃, 纤维增强聚丙烯diaphrag阀) , has been listed as a ministry of chemical industry and chemical industry standard, the standard of HG/T 2643 & ndash; 1994. Due to the nature of reinforced pp material, the design used in operating conditions valve gate size and the working pressure and temperature range has a close relationship to each other. It can general corrosion of acid, alkali, salt and its derivative products, such as hydrochloric acid, thin sulfuric acid, dilute nitric acid, phosphoric acid, carbonic acid, chromic acid, hydrofluoric acid and some organic acid and ammonium, sodium, potassium, calcium, magnesium, iron, nickel salt compounds, etc. Each are not identical, because there is a great variety of chemical, concentration in chemical equipment and piping systems available in addition to the working pressure, working temperature and medium to the material valve door should be first consider the problem of corrosion. Especially chemical medium concentration and the suitable temperature range. Relevant information will be its temperature is divided into 25, 50, 80, 100 ℃ several files, chemical corrosion resistance is divided into no corrosion ( Use good) , no corrosion (roughly You can use) , a little corrosion ( Use the circumstances) , corrosion, Do not use) 。 Production of the product provides corrosion resistance that can reference, can also refer to authoritative & ndash; corrosion data handbook — — Polypropylene corrosion data, will be more comprehensive in detail, make the reasonable selection of the valve door.