China Valves Name: Double block and bleed ball valve. Design: API 6D. Body: F316. Nominal size: 1 Inch. Nominal class: 300 LB. Connection ends: RF X NPT. Face to face: manufacture standard. Test and inspection: API 598. ...
China OrbitPlug Valve Introduction Double block & bleed valve (DBBV) is a non-lubricated, resilient seal, plug-type valve which has a mechanical means of freeing the plug before it is rotated from the closed to the open position. In opening the valve, the plug is raised, thus ...