Details: part a :- 6.8 providing, lowering, aligning, fixing in position in pipe line at work site, di d/f resilient seated (soft seated) sluice valves (gate valves) , vacuum tight(bubble tight), straight and pocket less body passage of approved make of following class and dia complete confirfing to bs-en-1171/ awwa c-509 and of following specifications: body and bonnet of ductile cast iron of grade ggg40/ggg50 as per din 1693 or gr sg-400/12 as per is 1865 or equivalent grade as per is :3896-part2-1985 and ubsequent revisions, wedge of same material as body and shall vulcanised rubber lined with epdm (food grade quality) and seals of nbr face to face dimensions as per bs 5163-89/ is 14846/2000 (amended up to date) /din 3202 f4, stem/ spindle of ss aisi 316/ 410 electrostatic epoxy powder(ep-p)/ fusion bond epoxy ( non-toxic- suitable for drinking water) coated with minimum thickness of 250 microns inside and outside, drilled as per is 1538. nut-bolt confirming to is:1363 and is: 13
Sector: Water supply and Sewerage