Check Valve Diameter Du 250 Pressure Ru 10, Data Sheet Check Valve Dn 400 Mm, Pn25 Mpa Designed To Automatically Prevent The Reverse Flow On Pipelines Transporting Various Liquid And Gaseous Media Neutral To The Materials Of The Main Parts. It Is Accepted In The Oil And Gas And Heat -Power Industries, Water Supply Systems. Technical Parameters Nominal Diameter, Dn 400Mm Nominal Pressure, Pn 25 Mpa, (25 Kgs/Cm2) Tightness Class Gost 9544-2005 A, C, S, D Joining The Pipeline Gost 12815-80, (Weld) Corps Material Steel 25 Climate Span. Ukhl Temperature Up To + 425 0C Axis Steel 19S49ng1
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