tender for supply and delivery of 150 mm dia sluice valve and materials for maintenance and repairing works for different dtwc under domkal (a-i) sub division in the jurisdiction of berhampore-i(a-i) division ( non - plan) , supply and delivery of , 150 mm dia c.i. sluice valve with hand wheel isi marked is : 14846 , ci male female coupling for 150mm dia sluice valve (as par sample) , spout key for 150mm dia ntp valve square (as par sample) , ms surge tank as per drawing (annexure-h) thr body of which made of 3mm thick ms sheet and top and bottom cover are made of 5 mm ms sheet welded with the body and strenghthen with rib etc. all joint must be electrically welded to a leak-proof condition and joint must be capable of withstanding pressure of 50 psi. the surge tank should be fitted with all accessories as specified in the drawing. entire surge tank is to be painted both inside and outside over a coat of priming. , 32 annual periodical maintenance fuse grip complete set (g.s.c) , c.i. wedge with spindle for 150 mm dia ntp valve (as par sample)