bids are invited for solenoid valve for pneumatic angle drain valve solenoid valve for pneumatic angle drain valve auto drain trap valve- solenoid operated (to drain water) for oxygen concentrator, copper alloy gate valve for waterworks purpose as per is 778, solenoid valve (v2), angle seat valve, cast copper alloy screw down bib taps and stop valves for water services as per is 781, control valve pneumatic, solenoid valve with spring return inexhaust, electronic auto drain valve, plastics bib taps pillar taps angle valves and stop valves as per is 9763:2000 (latest), fittings and accessories for power transformer, drain valve and flanges as per is:3639 relevant control valve pneumatic total quantity : 4