tender for replacement of air valve and isolating sluice valve from the 1200 mm and 700 mm dia outlet line at esi bps okhla phase-i under tuglakabad constituency ac-52. , replacement of air valve and isolating sluice valve by carrying out following work. scaffolding arrangement in the header line chamber for standing of workers for cutting and opening of nut bolts of damaged air valve & sluice valve. , cutting charges of nut bolts of damaged air valve and sluice valve with the help of gas cutter, welding machine and with other tools & tackles. , taking out both air valve and sluice valve from the chamber one by one with the help of heavy-duty manual labour arrangement. , pumping out water caused by springs, tidal or river seepage, broken water main or drain. (50.1.1 sor-2025). rates excluding gst @ 18% = 161.36 p.kl , removing charges of damaged pipe from the main line with the help of gas cutter, welding machine and with other tools & tacklescleaning of surface from the top of main line with the help of hand grinder etc. , providing and fixing of new m.s gap piece of 150mm dia on the existing hole of header line with the help of fitter, welder and other labour. the job includes welding of 1 no m.s.flange of 150mm dia on top of gap piece. , supply of 150mm dia pn1.0 cast iron double flanged non-rising type sluice valve as per is 14846/2000, flange drilled as per is 1538 table iv & vi flat face. make-kirloskar/ivc/djb approved.(4.22.4sor-2025) , supply of 150mm dia single chamber air valve automatic operation with water. flanges connection dimension to en 1092/is: 1538 table 4 & 6, body cover made of ductile iron is: 1865 gr.400/15, inner parts made of stainless-steel grad 304 sea made of epdm. make-kirloskar/ivc/djb approved. (4.24.3 sor-2025) , supply of nut bolts. , supply of rubber packing sheet of 150mm dia. , fixing charges of above items on top of 150mm dia m.s gap piece one by one. ist sluice valve then air valve on top of sluice valve under the supervision of expert supervisor with the help of fitters and heavy-duty manual labour arrangement.