Technical data Size DN 32--DN600 working pressure PN6/PN10/PN16 Flange drilling EN1092 PN16 Inspection and test API598 Product features This wafer swing check valve with circular clack which is one ultra-thin check valve.Compare with the traditonal check valves,the new ones open/close angle is big ,the circulation is fine,rotates is swiftly,assembles conveniently.There are two types of this wafer check valve,spring type and without spring type.Without spring type only can be used in the stable working conditions.The valve can be used in the field that assembling space is limited,such as petrochemical industry,water supply system and metallurgy industry etc. Material of construction parts     description           Material   speficivation 1         hook               stainless steel                               AISI 316 2         body               stainless steel                               A351 CF8M 3         screw               stainless steel                                A351 CF8 4 � spring �stainless steel� SI 316 5 �stainless steel 351 CF8M 6 seat ring EPDM 7 O-ring � Perm
