supply of duplex check valve etc.duplex check valve etc.,duplex check valve with 1.5+/-(plus-minus) 0.12 kg/cm2 pressure setting for air spring suspe nsion system rdso drg. no., sketch - k1051, alt, 1 and rdso spec, no. c-k-407, (rev - 4), firms offer appr oved escort drawing no. 3eb 6632. uvam item refr 3100396-air suspension control equipments for air sprin g assembly system with icf/lhb type bogie to rdso spec. no. c-k 407( rev 4) sub items 3100396- sub ite m air suspension control equipments for air spring assembly system with icf/lhb type bogie [ warranty p eriod: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: m ax 8 lacs ] ]