supply of cut off angle cock with vent ( complete ) .cut off angle cock with vent ( complete ) ., cut off angle cock with vent ( complete ) . drawing no :- wd - 88123 / s - 01, alt. 2, item no. 1 to 13. spec. no. :- 02 - abr - 02 with amend. no. 4 . special terms & conditions:-out of total qty. ordered 50% qty. be supplied in green colour coding to use on brake pipe and remaining 50% qty. be supplied in white colour coding to use on feed pipe. ( warranty / guarantee :- the warranty / guarantee period will be 36 months from the date of delivery or 24 months from the date of commissioning whichever is earlier. ( for details please see spec. no. 02-abr-02 with amend. no. 4 )