Tender For supply of b and d spares of hull valves for p17a : : - 200nb nab sdsl valve _angular type , 200nb nab triple offset butterfly valve , 40nb nab sdnr valve _angular type , 50nb nab sdnr valve _angular type , 65nb nab sdnr valve _angular type , 80nb nab sdnr valve _angular type , 100nb nab sdnr valve angular type , 150nb nab sdnr valve _angular type , 80 nb nab storm valve _angular type , 65 nb nab storm valve _angular type , 50 nb nab top entry ball valve , 25 nb nab top entry ball valve