supply of overhauling kit for duplex check valve etc.overhauling kit for duplex check valve etc.,overhauling kit for duplex check valve for escorts make air spring suspension system consisti ng of 04 items. 1) flat sealing ring to escorts drg. no. 4eb 6795 %u2014 02nos,2)compression spring to es corts drg. no. 4a76146-- 02nos, 3) v alve head to escorts drg. no. 4a 48128 2014 02nos, 4 )0 ring to esco rts drg. no. 4a 27763/26 2014 02nos, as per drg. no. as above or latest specn. make: escorts [ warrant y period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: m ax 8 lacs ] ]