tender for - procurement of spares of m/s siemens make electro pneumatic smart positioners for control valve, had and cad installed in btg area of 2x660mw sstpp, stage-ii, mppgcl, khandwa (m.p.). , siemens electro pneumatic smart positioner (single acting) , sipart ps2 smart electro pneumatic positioner model no.:- 6dr5113-0nn00-0aa0, single acting , pneumatic block, single acting ; model no.:- c73451-a430-d80 , siemens electro pneumatic smart positioner (double acting) , sipart ps2 smart electro pneumatic positioner model no.:- 6dr5123-0nn00-0aa0, double acting , pneumatic block, double acting ; model no.:- c73451-a430-d81 , feedback card ex; model no.:- 6dr4004-8j , motherboard safe area, with hart