... AISI316L Technical parametersreversing valve(reverse flow valve,valve with manual overridel)Size: DN25-104and 1”~4”Standard:ISO, ... etcMaterial:AISI304, AISI316LConnection:welded, male, clamped,Working Principal:manual operation or driving device operationManual operation:handle,Pneumatic device: ... fitting, tubes, manhole covers, pumps, tanks etc for many years. We can design the products according to ...