control valves ( butterfly ) design, engineering, manufacturing, procurement of materials and bought out components, assembly at shop, testing at manufacturers works, inspection by tpia, packing, supply of control valves ( butterfly ) , control valves ( butterfly ) : line size ( 4” ) , 300 lbs, rtj faces, mandatory spares ( as per clause 13 of 200663c-000-jss-1541-0001 ) 1p30a- hv-2056a01 1p30a- hv-2056b01 1p30a- hv-2056c01 1p30a- hv-2056d01 1p30a- hv-2056e01 1p30a- hv-2056f01 , unit rate forsupervision sevices of erection and commissioning / performance testing & training chrages as per details mentioned in material requisition for quoted items as per enclosed instructions to vendor per diem charges upto 8 hrs on normal working days. ( bidders to quoteunit rate for diem charges ) , unit rate forsupervision sevices of erection and commissioning / performance testing & training chrages as per details mentioned in material requisition for quoted items as per enclosed instructions to vendor overtime rate per hour ( beyond normal 8 hours on normal working days ) . ( bidders to quote over timerate per hour ) , unit rate forsupervision sevices of erection and commissioning / performance testing & training chragesas per details mentioned in material requisition for quoted items as per enclosed instructions to vendor overtime rate per hour for work on weekly off days / holidays ( as applicable to refinery site ) . ( bidders to quote over timerate per hour ) => limited