Product Description Features Ⅰ,The products feature a reasonable structure, reliable seal, good performance and nice modeling. Ⅱ,Disc is swing, bypass is through way type, all of level pipe and plumb pipe may fix. Ⅲ,The variety of body materials are complete. Gasket can be chose according to customer? requirement, and are used in any pressure, temperature and working condition. Ⅳ,Inside-set pivot structure reduces leakage and reliable use. Technical Data Size: NPS 2 ~ 24 , DN 50 ~ 600 Pressure Ratings:Class 150 ~ Class 1500, PN 16 ~ PN 100 Temperature: -46 ~ 550癈 Design Standard: ASME B 16.34, API6D, DIN3356 Face to Face: ASME B 16.10, DIN EN558 Flanged Ends: ASME B16.5, DIN EN1092 Butt-welding Ends:ASME B16.25 Test and Inspection: API6D , ISO5208 , EN12266.1 Notes: The sizes of serial valve flange and butt-welding dimensions can be designed according to customer? requirement. General Application They are used in industries include oil, chemistry, pharmaceutical, fertilizer and power generation to prevent the backward flux of the media. Other Information We can also supply lift type check valve,tilting disc check valve.