CNYC diaphragm valve is mainly composed of two parts, CNYC diaphragm, CNYC valve body and controller (valve handwheel, or valve head). The usual materials of diaphragm are: rubber, elastic plastic, corrosion-resistant and impermeable materials. The material of the valve body is: plastic, glass fiber reinforced plastic, ceramic and stainless steel. The diaphragm material of the diaphragm valve produced by our company (CNYC) is PTFE+EPDM, the valve body is AISI/SUS316L stainless steel, and the part of CNYC diaphragm valve in contact with the material is AISI/SUS316L stainless steel and PTFE+EPDM.