supply of poh kit for tap changer & switch group switches consisting of seven items. 1) valve stem to bosco-2p bhel drg no 35880530031p1 -20 nos. 2) valve to bosco-1p bhel drg no 35880530033p1- 20 nos 3) piston sealing ring (gaco) bhel drg no 25801130003p1 -23 nos 4) piston sealing ring for ep relay bhel drg no 2585113004p1- 3 nos 5) washer to bhel drg no 458011300364p1 -9 nos 6) valve stem to bosco-3p bhel drg no 35880530029p1 -6 nos 7) valve to bosco-4p bhel drg no 35880530035p1 -6 nospoh kit for tap changer & switch group switches consisting of seven items. 1) valve stem to bosco-2p bhel drg no 35880530031p1 -20 nos. 2) valve to bosco-1p bhel drg no 35880530033p1- 20 nos 3) piston sealing ring (gaco) bhel drg no 25801130003p1 -23 nos 4) piston sealing ring for ep relay bhel drg no 2585113004p1- 3 nos 5) washer to bhel drg no 458011300364p1 -9 nos 6) valve stem to bosco-3p bhel drg no 35880530029p1 -6 nos 7) valve to bosco-4p bhel drg no 35880530035p1 -6 nos,poh kit for tap changer & switch group switches consisting of seven items. 1) valve ste m to bosco-2p bhel drg no 35880530031p1 -20 nos. 2) valve to bosco-1p bhel drg no 358805300 33p1- 20 nos 3) piston sealing ring (gaco) bhel drg no 25801130003p1 -23 nos 4) piston sealing ring for ep relay bhel drg no 2585113004p1- 3 nos 5) washer to bhel drg no 458011300364p1 -9 nos 6) valve stem to bosco-3p bhel drg no 35880530029p1 -6 nos 7) valve to bosco-4p bhel drg no 358 80530035p1 -6 nos [ warranty period: 30 months after the date of delivery ] ] mechanical & telangana 26.00 set