Part Number 648 17BU having (CAGE Code 19562) and FSC 4820 Valves Nonpowered in stock with ready to ship. Get an instant quote for 648 17BU Seat Valve by Babcock And Wilcox Power Generatio. Fill the form below with your desired order quantity, targeted price and the expected order-fulfilment date. Our dedicated account manager will get back to you within 15 minutes.