bids are invited for of u 1 2 3 flexible copper connecting pipe , auxiliary tonner connecting valve , union gasket auxiliary valve , ball valve gas line 25nb , pp ball valve40nb , pp ball valve 50nb , vacuum control back check valve complet , flow meter assembly complete , diaphragm set for complete chlorinator , chlorine spray catcher gas filter element , valve control complete , valve drain complete , valve vaccum relief complete , injector assembly complete , regulator vacuum assembly , regulator differential assembly , o ring set , spring set for complete chlorinator , rotameter assembly , stabilizer vaccum , lead gasket , rapture disc set for expansion tank , rupture disc set for pressure relief valve , liquid chlorine evaporator , ring o vacuum differential regulator o ring and sprin procurement of spares for chlorination plant of cw and rw total quantity : 70