Symbol Overview How to understand this Digest Material Indication We use abbreviations for indicating product materials. The meanings of the abbreviations are as follows: PTFE EPDM FKM ViflonR F FKM-F ViflonR C FKM-C JIABLOCK IIR-C SBR NBR IIR CSM Symbol Overview U-PVC C-PVC HI-PVC PP PVDF PDCPD Body Material Diaphragm Material or Seal material 1 PVC is an abbreviation of Polyvinyl Chloride. The first letter "U" is an abbreviation of Unplasticized. Therefore, U-PVC refers to Unplasticized Polyvinyl Chloride. The first letter "C" is an abbreviation of Chlorinated. Therefore, C-PVC refers to Chlorinated Polyvinyl Chloride (thermal-resistant hard polyvinyl chloride). The first "HI" is an abbreviation of High Impact. Therefore, HI-PVC refers to High Impact Resistance Unplasticized Polyvinyl Chloride. Abbreviation of Poly Tetra Fluoro Ethylene. Abbreviation of Ethylene Propylene Diene Rubber. Abbreviation of Fluorocarbon Rubber. Abbreviation of Fluorocarbon Rubber of Terpolymer. ViflonR is a registered trademark of ASAHI YUKIZAI CORPORATION and indicated to FKM-F or ViflonRF. Abbreviation of Fluorocarbon Rubber of Terpolymer. ViflonR is a registered trademark of ASAHI YUKIZAI CORPORATION that is indicated to FKM-C or ViflonRC. Abbreviation of Styrene Butadiene Rubber. Abbreviation of Acrylonitorile Butadiene Rubber. Abbreviation of Isobtylen Isopren Rubber. Abbreviation of Chlorosulphonated Polyethlene. Abbreviation of Isobtylen Isopren Rubber for Sodium hypochlorite line. Abbreviation of Polypropylene. Abbreviation of Polyvinyliden Fluoride. Abbreviation of Polydicyclo Pentadien. DIAPHRAGM VALVE TYPE 14 AUTOMATIC PNEUMATIC AIR TO SHUT TYPE AV TYPE AN TYPE AP DOUBLE ACTING AIR TO OPEN DIAPHRAGM EPDM FKM PTFE U-PVC PP C-PVC PVDF JIS / DIN / ANSI SIZE inch mm 1/2, 3/4, 1, 11/4, 11/2, 2, 21/2, 3, 4 15, 20, 25, 32, 40, 50, 65, 80, 100 CONNECTION FLANGED VALVE TYPE COMPATIBLE ACTUATOR STANDARD FEATURES BODY MATERIAL SIZE CONNECTION DIAPHRAGM MATERIAL OR SEAL MATERIAL PRODUCT IMAGE ・TYPE AN & TYPEAP: PLASTIC ACTUATOR WITH EXCELLENT CORROSION RESISTANCE ・LIGHT WEIGHT AND COMPACT SIZE TYPE AN TYPE AV TYPE AP