bids are invited for schedule of quantity sitc of hydro pneumatic water suppy system , providing laying testing and commissioning of c class heavy duty ms pipe conforming to is 3589 or is 1239 , supplying fixing testing and commissioning of 150 mm dia butterfly valve , supplying fixing testing and commissioning 50 mm dia of butterfly valve , supplying fixing testing and commissioning of 50 mm gate valve , supplying fixing testing and commissioning of 15 mm gate valve , supplying fixing testing and commissioning of 150 mm dia non return valve , providing and fixing of water flow meter in m.s. pipe line of 150 mm dia. , providing and fixing in position the industrial type pressure gauge with gun metal brass valve also making suitable dia. , job for removal of old sand gravel media cabon from existing sand filter appx size , supply of sand gravel of size media 16 and 32 mes media 8 and 16 mes and media 4 or 8 mes complete as required. , supply of activated carbon media iodine value 900 for activated cabon filter complete as required. total quantity : 2584