GEAFU-77 OF 2026-27 ADDN ALTN TO WATER SUPPLY FILTRATION PLANT AND OTHER ALLIED CONNECTED WORK AT 901 SU

Supply and lay 3- layer PP-R Polypropylene random copolymer) concealed pipes SDR 6 (PN 20) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings laid in trenches. complete of size outer dia 90 mm including all PPR brassfittings as required complete all as specified and directed by Engr-in-charge.

Supply and lay3- layer PP-R Polypropylene random copolymer) concealed pipes SDR 6 (PN 20) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply all PP-R plain & brass threaded polypropylene random fittings laid in trenches. complete of size outer dia 63 mm including all PPR brassfittings as required complete all as specified and directed by Engr-in-charge.

M & L for flange steel water tubing medium grade including all fittings complete laid in trenches of 80 mm dia all as specified and directed by Engr-in-charge

M & L for 80 mm dia Butterfly Valve, wafer/lug type, concentric disc design, suitable for water service, body of DI/CI, disc SS316/DI, shaft SS410/SS316, replaceable EPDM liner/seating, PN 20 pressure rating, lever/gear-operated as applicable, flanged/wafer connection, face-to-face dimension conforming to EN 558 / ISO 5752, hydrostatic pressure tested as per EN 12266, complete with bolts, nuts, washers, sealing gasket and all accessories, after taking down old unserviceable valve, all as specified and directed by Engr-in-charge Make Kirloskar, IVRCL/Leader, Audco/L&T, BIR

Labour only for cutting of GI / CI/ PPR pipe 150/100/80/50 mm dia carefully in position for repairs or inserting fittings such as bend, tee, socket pieces, collar etc; complete all as specified and as directed.

Supply, installation and testing of 100 mm cast iron sluice valve, flanged end, PN 20, non-rising spindle type, suitable for water service, body of cast iron, wedge/gate of cast iron with SS spindle, renewable EPDM/NBR seating rings, SS spindle nut, hand wheel/gear arrangement as required, flanges drilled as per IS 1538 / IS 9523 / EN 1092, complete with nuts, bolts, washers, gaskets and all accessories. incl in repair accessories after taking down old unserviceable valve, all as specified and directed by Engr-in-charge Make Kirloskar/ IVRCL/Leader/ Audco/L&T / BIR

All as per item No 6 here-in-before but 80 mm dia

Construction of masonary valve pit chamber with burnt brick (Sub class "B") in cement mortor (1:6) and 10 mm thick plastering in CM 1:6, PCC (1:3:6) type C-2 and PCC (1:4:8) type D-2 in foundation bed above hard core and size internally of 900 mm x 900 mm x 900 mm with 2.8 mm thick MS sheet cover with locking arrangement hinged with 40 x 40 x 5 mm angle iron frame embeded in PCC (1:2:4) type B-1 etc including painting with two coats of synthetic enamel paint over a coat of red oxide primer to all steel surfaces completed including earth work all as specified and directed.

Supply, installation, testing, and commissioning of a pre-assembled, tank-mounted automatic calcium Hypochlorite Dosing System for disinfection of potable/raw water distribution mains, comprising of Electronic Diaphragm Dosing Pump, electromagnetic solenoid-driven / dosing pump with flow capacity 0–10 LPH against a discharge pressure of minimum 4.0 to 7.0 bar; PTFE-faced composite diaphragm, liquid end made of PP / PVDF, flow turndown ratio 100:1 with manual stroke length/frequency adjustment, IP-65 weather-proof enclosure, operating on 230 V AC (±10%), 50 Hz single-phase supply. 100 ltr vertical Chemical Storage Tank, chemical-resistant rotational-molded HDPE / LLDPE Tank, with calibrated external volume level markings, threaded top inspection lid, pump mounting bridge/platform, suction connection, drain valve, and chemical overflow nozzle. Level Switch & Dry-Run Interlock: Low-level float switch assembly (PP/PVDF construction) interlocked with the dosing pump controller for automatic dry-run trip, visual alarm, and pump protection on chemical depletion. and complete tubing and manifold assembly including 1/2" BSP(M) retractable/non-retractable Injection Quill with integral non-return check valve (NRV) (Hastelloy/SS316 spring, PVDF body), weighted foot valve with suction strainer, anti-siphon / backpressure valve, 10 meters of chemical-grade LDPE/PTFE flexible delivery and suction tubing (1/2" or 3/8" OD), suction bleed/priming valve, and mounting bracket. and fixing with water supply mains (Approved Makes: Milton Roy / ProMinent / Grundfos / Seko / Athena / Idex)all as specified / Declibac

Supply and fix 80 mm flanged reflux/non-return valve with by-pass arrangement, CI body, stainless steel/SS or suitable internal components, PN 20 rating, complete with flanges, nuts, bolts, gaskets, bypass line with isolation valve, supports and all accessories, suitable for water service, conforming to relevant IS standards, complete all as directed and specified by Engr-in-charge.