Attending repair and renewals of Replacing 350mm Disk Check Valve NRV in 170 HP Unit 3 motor at Pullagoundampatti Booster Station in Tiruchengode Municipality.

Manufacture, supply and delivery of 350mm dia DI D/F Slanted seat Tilting Disc Swing Check Valve in single piece body and closed eye disc construction. Hemispherical disc with 59 degree inclination for fast open and closing. Corrosion proof and wear resistent(triple offset) disc face & body seat face, both made of fusion bonded Nickel Chromium weld overlay and microfinished. Body and disc of ductile cast iron GGG-40 or GGG-50, medium free (dry) shafts of stainless steel and bearings of Zinc-free Bronze, Valve should have provision for internal damping unit for reducing the effects of water hammer/surge, if required at later stage. Electrostatic epoxy powder/liquid coating (EP-P) inside and outside color blue RAL 5005 with minimum coating thickness of 150 microns. The EPDM rubber & Epoxy Powder should be approved by W 270.(EP-P it is a resi-coat powder approved for drinking water application, applied through fusion bonding technology process by dipping the shot-blasted casted components heated upto 200deg C). Face to face dimensions as per EN 558-1 series 14 and flange connections as per EN 1092-2/IS and with 5 years warranty etc complete.,

Manufacture, Supply and Delivery of 100mm dia Tamper proof DI single chamber air release valve double orifice triple function (ventilating, admitting & ventilating during operation) air release valve with pressure rating PN 10/16 with body and cover made of Ductile Iron of Grade GGG 40 or GGG 50, conforming to IS 1865 with Food Grade Epoxy Powder coating (EP-P) inside and for outside of colour blue RAL 5005. All internal parts such as float, shell etc., cover bolts, made of Austenitic alloy steel of SS AISI 304/316. The float shall be made of Polytetrafluroethylene/ Austenitic alloy steel of AISI 304/316. Gaskets and seals of EPDM / Neoprene rubber for TWAD Board works anywhere in Tamil Nadu and with 5 years warranty.

Supply delivery and fixing of 20mm dia and above x 90mm to 120mm length fully threaded bolts and with nuts 2 Nos etc complete.,

3 Ply R.I. Sheet etc complete.,

Labour Charges for Removing damaged valves fixing for New valve including tools etc,after adjusting old scrap etc complete.,

Supply and Delivery of Digital Ammeter 3 phase PWD 2025-26

Supply and Delivery of Digital Voltmeter 3 phase PWD 2025-26

Supply and delivery of Current Transformer Ratio 500/5A, Burden 5VA, Cl.1.0 etc complete., PWD 2025-26

add GST 18%

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