Gem Bids For Valve Assembly - Needle Valve, Sequence Valve, Handpump Sub - Assemblies (deepwell Hand Pumps Components) As Per Is 15500 (part 3), Microfiltration Assembly, Stationary Valve Regulated Lead Acid Batteries (v2) As Per Is 15549, Hose Assembly, Copper Alloy Gate Valve For Waterworks Purpose As Per Is 778, General Purpose Ball Valves (v2), Gas Stripping Assembly, Taps Or Valves Of Nonferrous Metals