Lowering and providing of RCC slab over CRS masonry valve chamber on 600mm dia PSC gravity main from Sanath nagar to Prashanthi nagar at near Nala, Bala nagar road, Bala nagar, Lowering and Providing of RCC slab over CRS masonry Butterfly chamber on junction of 800mm to 1200mm dia PSC gravity main from Hydernagar to Alwal at opp. Andhra Bank and Santosh Dhaba, near Bhujanga Theater, pipeline road, jeedimetla and Manufacturing , Supply , Delivery fixing of 200mm dia DI/DF Air valve with gate Sluice valve with required specials to replace the damaged Air valve on 1200mm dia PSC gravity main from Prashasan Nagar to Lingampally at Beside V-Pact Building 100 feet road ayyappa Society under SD-II, O & M Div-XXI. Control room, Secunderabad in (3) Slices.