VTV Disco Check Valve 4", Model: DC-207, Body : SS316, Disc : SS316, Seat : Metal, Connection : Wafer type to PN16 or PN 40, VTV Valve serving Multi-Nasional end users in a wide range of applications in many industries including :1. Palm oil mill and Refinery Plant, 2. Food Industries, 3. Petrochemical Plants, 4. Cooling System, 5.Heating, Suitable for Water, Steam, Oil, Gases, and Non-abrasive me.