bids are invited for control valve for 2x500mw ntpc sipat fgd project control valve tag no. ecw-21 for fgd dmcw pumps recirculation , 0.25 inch ss tubing - 15 meter for each tag , ss fittings for connection to air filter regulator for each tag , ss fittings for connection to air lock relay for each tag , ss fittings for connection to ia header isolation valve for each tag , ss equal tee for each tag , ss 0.5 inch npt-m x 0.25 inch od tube connector for each tag , commissioing spares -gland packing and gasket-one set for each cv tag , cv test charges for cv tag no. ecw-21 , mandatory spares - pneumatic and electro-hydraulic actuator assembly , mandatory spares - valve trim including cage, plug, stem and seat, seal rings, guide bushing etc , mandatory spares - diaphrams, o rings, seals etc. of all type, make etc. , mandatory spares - pressure gauges of all types, make, rating etc. , mandatory spares - solenoid valves, if applicable , mandatory spares positioner units -complete unit and accessories link assembly , mandatory spares - pneumatic afr of each type. make rating etc. , mandatory spares - air lock relays total quantity : 31