Tender For supply of gate valve for main transformer of 3 phase locomotives [valve 80 nb (nb 80/nd 6) type, asper abb id no- hstn 422884. spec/drg no- clw specification no. clw/es/3/0456, alt- k and conforming toclw drawing no. clw/es/3/sk-1/0456, item no. 18. [ warranty period: 30 months after the date of delivery ] ]