Gem Bids For Down Bib Taps And Stop Valves For Water Services As Per Is 781, Industrial Bellows-seal Wedge Gate Valves-is:11733, Cs Gate Valve As Per Api 602, Gate, Globe And Check Valves For Water Work Purposes-is:778, Copper Alloy Gate Valve For Waterworks Purpose As Per Is 778, Knife Edge Gate Valve, Diaphragm Type Valves For General Purpose - Is 11791, Sluice Valve For Water Works Purposes (50 To 1200 Mm Size) (v2) As Per Is 14846, Flush Valves And Fitting For Water Closets And Urinals