目前国内生产和国外进口的隔膜阀在复肥装置上使用寿命很短,为此该课题研制了耐腐蚀、寿命长且安全可靠的复肥工程磷酸介质用隔膜阀。其阀体采用耐磨蚀金属材料PV_1,密封件采用橡胶隔膜。橡胶隔膜既能防止腐蚀介质外漏,又能方便的开启和关闭阀门,其耐腐蚀和耐温度性能靠橡胶材料来保证。另外研制了耐磷酸腐蚀的金属材料, Currently domestic production and import of diaphragm valve in the compound fertilizer plant service life is very short, for which the subject developed a corrosion-resistant, long life and safe and reliable compound phosphate fertilizer project with diaphragm valve. Its body is made of wear-resistant metal material PV_1, rubber diaphragm seal. Rubber diaphragm can prevent corrosion medium leakage, but also easy to open and close the valve, its corrosion resistance and temperature resistance by rubber material to ensure. In addition developed a phosphoric acid corrosion of metal materials,