Tamil Nadu Generation And Distribution Corporation Limited-TANGEDCO has published Tender For Overhauling Of Various Sizes And Various Class Of Hand And Motor Operated Valves Of Turbine Drain Valves (Mal) & Seal Steam Valves (Maw) Up To Gscduring The Aoh Of Unit-I For The Year 2023-24.. Submission Date for this Tender is 01-09-2023. Valve Tenders in Thiruvallur Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Overhauling of motor operated MAL valves and manual isolation valves in MAL drain lines |
| 2 | Overhauling the Motor operating MAL valve 25 NBclass 1500 along with manual isolation valve |
| 3 | Overhauling the Motor operating MAL valve 40 NBclass 1500 along with manual isolation valve |
| 4 | Overhauling the Motor operating MAL valve 50 NBclass 1500 along with manual isolation valve |
| 5 | Overhauling the Motor operating MAL valve 65 NBclass 1500 along with manual isolation valve |
| 6 | Overhauling of various sizes and various class of hand and motor operated valves of Seal steam system lines(MAW) up to GSC |
| 7 | Overhauling the Motor operated MAW valves ofGate valve (300NB, 200NB, 150NB Cl.300.) including Removal of actuator, Dismantling of valve bonnet, removal of valve stem and gate, Cleaning of valve internals, seal ring seating area, Lapping & Blue matching of disc and seat, Assembling the valve with new seal ring and gland packing, placing the actuator and commissioning the valve inclusive of all consumable and T & P"s. |
| 8 | Overhauling the Motor operated MAW valves of size 80NB, class 1500 and Type : Gate valve/ Globe valve including Dismantling ofthe valve completely, inspection of stem, seat, threaded portion, yoke and actuator, cleaning of the same, lapping the valve seat and seating area, replacing of gland packing/sealing rings and bonnet gaskets if necessary, reassembling of all the parts in the correct sequence and ensuring smooth manual operation of the valve inclusive of all consumable and T & P"s. |
| 9 | Overhauling the Motor operated MAW valves of size 25NB, class 1500 and Type : Gate valve including Dismantling ofthe valve completely, inspection of stem, seat, threaded portion, yoke and actuator, cleaning of the same, lapping the valve seat and seating area, replacing of gland packing/sealing rings and bonnet gaskets if necessary, reassembling of all the parts in the correct sequence and ensuring smooth manual operation of the valve inclusive of all consumable and T & P"s. |
| 10 | Pneumatic Operated valve MAW-50 (Leak off steam control valve of Make : Dresser) Model no :38-411935 including Removal of actuator unitand Dismantling of the valve completely, checking condition of the valve plug stem, seat, seat ring, valve plug piston, cage, bonnet, Retaining ring, all threaded parts etc., Lapping & Blue matching ofof valve plug stem with body seat, Re-Assembling of all the parts in the correct sequence & commissioning the valve inclusive of all consumable and T & P"s. |
| 11 | Pneumatic Operated valve MAW-10 (Gland steam control valve of Make : Dresser) Model no :88-41955 including Removal of actuator unitand Dismantling of the valve completely, checking condition of the valve plug stem, seat, seat ring, valve plug piston, cage, bonnet, Retaining ring, all threaded parts etc., Lapping & Blue matching ofof valve plug stem with body seat, Re-Assembling of all the parts in the correct sequence & commissioning the valve inclusive of all consumable and T & P"s. |
| 12 | Overhauling the Hand operated valves of size 300mm, class 300 and Type : Gate valve including Dismantling ofthe valve completely, inspection of stem, seat, threaded portion, yoke and actuator, cleaning of the same, lapping the valve seat and seating area, replacing of gland packing/sealing rings and bonnet gaskets if necessary, reassembling of all the parts in the correct sequence and ensuring smooth manual operation of the valve inclusive of all consumable and T & P"s. |
| 13 | Overhauling the Hand operated valves of size 200mm, class 300 and Type : Gate valve including Dismantling ofthe valve completely, inspection of stem, seat, threaded portion, yoke and actuator, cleaning of the same, lapping the valve seat and seating area, replacing of gland packing/sealing rings and bonnet gaskets if necessary, reassembling of all the parts in the correct sequence and ensuring smooth manual operation of the valve inclusive of all consumable and T & P"s. |
| 14 | Overhauling the Hand operated valves of size 80mm, class 1500 and class 300 and Type : Gate valve including Dismantling ofthe valve completely, inspection of stem, seat, threaded portion, yoke and actuator, cleaning of the same, lapping the valve seat and seating area, replacing of gland packing/sealing rings and bonnet gaskets if necessary, reassembling of all the parts in the correct sequence and ensuring smooth manual operation of the valve inclusive of all consumable and T & P"s. |
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