Product Name: DN500 Ductile Iron EPDM Seat Dual Plate Wafer Check Valve Model NO.: H77X-10/16 Application: Industrial Usage, Water Industrial Usage Standard: DIN Flow Direction: Unidirection Sealing Form: Gland Packings Globe Valve Pressure: Low Pressure Structure: Butterfly Connection Form: Clamp Material: Stainless Steel Temperature: Low Temperature Media: Water Trademark: SHIWEN Transport Package: Plywood Board Box Origin: China HS Code: 84813000 Product Description Series pinch wafer check valvesSize: DN40-DN1200/1.5"-48"End flange: ANSI B 16.1, ASTM B 16.47, EN 1092, AS 2129, ISO PN10/16, JIS B2212/2213, BS 10 Table D, BS 10 Table EFace to face: ANSI B 16.10, API 609Top flange: ISO 5211Normal pressure: DN40-DN600(1.5"-24") PN1.0/1.6MPa(150/200PSI) DN700-DN1200(28"-48") PN1.0MPa(150PSI)Body: Cast Iron/Ductile Iron/WCB/Carbon steel/AL-Bronze/CF8, SS304/CF8M, SS316Disc: Ductile Iron/Ni-plated ductile iron/Nylon-plated ductile iron/AL-Bronze/Rubber lined Disc/1.2501/1.4529/CF8/CF8M/Hastelloy Alloy/MonelStem: SS416/SS304/SS316/SS431/17-4pH/Monel/Carbon steel 45/45#Seat: NBR/Hypalon/EPDM/Neoprene/NR/Wear-Resistant EPDM/Viton/Silicon/Heat-Resistant EPDM/White EPDM/EPDM/PTFESuitable temperature: Normal Temperature -45 ~150Medium: Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc.