Maintenance work

Supplying and refilling media for the Activated Carbon Filter in the existing 12" × 48" FRP vessel with layers of silex, activated carbon, coarse sand and fine sand, and supplying and refilling media for the Pressure Sand Filter in the existing 12" × 48" FRP vessel with silex, coarse sand and fine sand, including the cost of all materials, loading, unloading, transportation, labour charges, filter arrangements, testing and all incidental charges. The work also includes supplying and installing a 20-inch jumbo cartridge filter with 1½" inlet and outlet, complete with necessary accessories, handling, transport and labour for fixing in position, and supplying and installing a 4-inch RO membrane with all materials, handling, transport, installation, flushing and testing. Further, the item covers supplying and fixing a 1-inch automatic multiport valve suitable for RO backwash and rinse operations, including all accessories, handling, transport and installation; supplying RO-grade antiscalant with loading, unloading, transport and integration with the dosing system; and servicing the existing high-pressure pump by supplying and replacing spares such as impellers, shaft, mechanical seal, bearings and other components, including all handling, transport, dismantling, refixing, alignment, testing and commissioning, complete as directed by the departmental officers.

Supplying and fixing in position best quality approved make SS Sink of size 1200 x 550 x 180mm including fixing the sink in position and testing for leakages etc., complete complying with standard specifications excluding CI brackets. [The sink and specials should be got approved by the Executive Engineer before use on works]

Supplying, laying and jointing UPVC pipes of Class 6 (having working pressure of 12.50 kg/sq.cm) conforming to IS 4985- 2000 of approved quality and best variety of the following dia including cutting and fixing UPVC specials using UPVC adhesives (but excluding cost of such specials) in accordance with IS 7634-3 (2003) and fixing into wall with teak wood plugs, PVC clamps and screws making holes on the wall (or) drilling holes in the roof and making good the dismantled portion to original condition with necessary brick work / cement concrete and plastering neatly wherever necessary with necessary scaffolding charges, etc., complete complying with standard specifications. The PVC pipes shall be got approved by Executive Engineer before use on works - Internal water supply above ground level.

32mm dia UPVC Pipe

25mm dia UPVC Pipe

20mm dia UPVC Pipe

Supplying and fixing UPVC Specials in water supply arrangements (both in internal and external water supply arrangements.

32mm dia Coupler

25mm dia Coupler

20mm dia Coupler

32mm dia Elbow

25mm dia Elbow

20mm dia Elbow

32mm dia Bend

25mm dia Bend

20mm dia Bend

Supplying and fixing in position first quality and approved variety of UPVC Ball Valve with BIS make of the following dia including cost of shellac, thread balls, etc., complete complying with standard specifications (for both internal and external water supply arrangements). The valves to be used on work shall be got approved by the Executive Engineer before use on work.

32mm dia

25mm dia

20mm dia

Supplying and fixing position CI Nahani Trap / Floor Trap of the size 100x75mm with best stainless steel gratings of approved brand and quality, fixed over a bed of brick jelly lime concrete 1:2:5 (One part of lime, two part of sand and five part of 40mm gauge brick jelly) and finished with Cement Mortar 1:3 (One Cement, Three sand) including dismantling masonry works wherever found necessary and making good the dismantled portions to the original condition and giving connection to the CI / PVC pipes, etc., complete complying with standard specification. (The Nahani Trap should be got approved by the Executive Engineer before use on works)

Supplying, fixing and installation of PVC over head water tank including the rate for labour charges, conveyance charges, necessary fittings etc., complete complying with standard specification and as directed by the departmental officers.

Renewing and refixing in position of 32mm dia waste hose is approved quality including cost of materials etc., complete and as directed by the departmental officers.

GST at 18%

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