bids are invited for procurement of knife gate valves and its spares make orbinox knife gate valve ext dn250 or 10inch asme 150 metric pn20 unidirectional , body of ext 250nb with oipl standard powder coating and ansi 150 metric drilling and m24 flange fasteners , gate of ext 250nb ss304 and hcp 350bhn , nihard deflection cone 500bhn of ext 250nb , aluminium gland follower of ext 250nb , yoke of ext 250nb carbon steel powder coated , repair kit of 250nb , protection guard of ext 250nb carbon steel powder coated , knife gate valve ext dn200 or 8inch asme 150 metric pn20 unidirectional , body of ext 200nb with oipl standard powder coating and ansi 150 metric drilling , gate of ext 200nb ss304 and hcp 350bhn , nihard deflection cone 500bhn of ext 200nb , aluminium gland follower of ext 200nb , yoke of ext 200nb carbon steel powder coated , repair kit of 200nb , protection guard of ext 200nb carbon steel powder coated total quantity : 80