Technical Specifications for main items of Water supply

1. Water Tank and Tank Tower, net capacity: (15, 30, 40) M3, suitable for storage of potable water

Supply of elevated compressed steel tank stand with a height of 6 - 12 meters from the ground depending on the topography of the area.

The height of the tank tower will depend on topographic surveys and designs but shall not be less 4 meters depending on the topography of the area.

The cold water storage tanks should be suitable for storage of brackish ground water qualities prevailing in Lasanod, The tanks should therefore be rubber/butyl lined pressed steel tanks, for bolted on-site assembly. The plates of the tank shall be bolted hot pressed steel panels with sealant to ensure water tightness. Panels shall be manufactured according to BS1564/1, steel according to BS4340/1449/1.

Structural steel work shall be according to BS5950/1. Plate thickness: not less than 4mm. Cover thickness: not less than 3 mm. The base shall be constructed from standard plates and supported by external flanges for ease of erection, inspection and maintenance.

All materials and accessories for the storage tanks shall be new, in factory finished condition and suitable for the climatic and other conditions prevailing in Lasanod. Special attention is drawn to the basic character of the water;

The tanks shall be painted externally with one coat of primer and two coats of bright aluminum paint. Internally two coats of non-toxic bituminous or non-toxic black epoxy paint, suitable for storage of potable water shall be applied.

Bolts used in construction shall comply to BS4190. Divisions’ baffles and weirs shall be constructed of the same materials positioned to coincide with plate joints in tank sides and base.

The structure of the tank should be manufactured to be unaffected by wind and earth tremors. Ventilators shall be supplied to avoid pressure differentials when filling and emptying.

Tank foundation: Supply and works shall include construction of the necessary tank foundations.Tank tower: The towers should be made of galvanized finished steel and should be corrosion protected. The tank tower shall be supplied complete with ladder, top walkways and safety hand railing. Safety measures should be installed to prevent unauthorized access to the tank. The tower shall be painted with one coat of primer similar to zinc phosphate and one coat of silver aluminum.Auxiliaries: The tanks shall be provided with a weather-proof lockable and sealed roof cover of standard pitched construction, external and internal (rope) ladder and cowl ventilator and cat & mouse type of water level indicator, readable at up to 150 meters distance and with ball valve housings

Inlet: 2-inch galvanized steel pipe complete with bends, duck foot, thrust blocks, and any other connectors and fittings that may be required, ground level connection to HDPE pipes 50 mm on an appropriate spot at minimum 5 meters distance from the tank foundations.

Outlet: 2-inch galvanized steel pipe, complete with bends, duck foot, thrust blocks, check-valve and any other connectors and fittings that may be required, connection to HDPE pipes 50 mm on an appropriate spot at minimum 5 meters distance from the tank foundations.

HDPE PipesHDPE Pipes, OD 63 (DN 2”)Minimum specifications for pipes (to be used for main lines) HDPE Water Pipes, OD 63 (DN 2”), PN 10Suitable for potable water distribution, safe for drinking water, odorless Tough, flexible and superior resistance to stress and crackingConvenient and easy installation Delivered in coils (max. length per coil: 100 m)Environment friendlyOutside dia: min. 50 mm / max. 50.5 mmWall thickness: min. 3.7 mm / max. 4.3 mmRoundness: 3.0 mmVisual appearance: smoothPipe standard: DIN 8074 / ISO 4427 / PS 3580 / DIN 16963Colour: black with blue stripe

HDPE Pipes, OD 50 (DN 1 1/2”)Minimum specifications for pipes (to be used for main lines) HDPE Water Pipes, OD 50 (DN 2”), PN 10Suitable for potable water distribution, safe for drinking water, odorless Tough, flexible and superior resistance to stress and crackingConvenient and easy installation Delivered in coils (max. length per coil: 100 m)Environment friendlyWall thickness: min. 3 mm / max. 3.5 mmVisual appearance: smoothPipe standard: DIN 8074 / ISO 4427 / PS 3580 / DIN 16963Colour: black with blue stripe

Galvanized Steel PipesHot dip galvanized, DN 2 ½”, suitable to be connected to rising pipe of borehole.Hot dip galvanized screwed and socketed, fitted with socket made of seamless steel or machined from solid bar. Pipe ends shall have smooth finish and shall be free of burrs or sharp machining chip. Internal surface of pipes shall not have any lump of zinc.

Sluice ValvesSluice valves, DN 2”, shall be suitable for HDPE pipes, DN 2”, PN 10. Sluice valves shall be supplied including all connectors

Water MeterDry type, water meters, DN 2”, including all connectors, for metering the borehole and DN1 1/2” for the distribution shall be supplied.Materials shall be selected to have adequate mechanical, chemical and electrochemical resistance against abrasion and corrosion. Materials in contact with the water shall be non-toxic and shall not affect the quality of the water.

Water Distribution System Water distribution system shall consist of following components:

Lying of distribution network with HDPE pipes, OD 63 (DN 2”), OD 50 (DN 1 1/2”),OD 40 (DN 1’) and OD 30 (DN ¾’), including all fittings with a network coverage of at least 400 m. Sluice valves shall be installed at strategic points, such as at the inlet and outlet of the water tank, at each junction, at the inlet of the kiosk (sluice valves to be placed in lockable manholes / including construction of thrust blocks and / or support blocks if required)

Branches to water kiosks with HDPE pipes, OD 50 (DN 1”), OD 30 (DN 3/4”) including all fittings and one sluice valve (placed in a lockable manhole). Approx. distance from main line to water kiosk: up to 15 m.

Lying of galvanized steel pipe, DN 2 ½”, including all fittings, from discharge port of borehole to water meter, (water meter must be placed in a lockable metal box inside the pump house).

From water meter the pipeline should continue with a HDPE pipe, DN 2”and 1’. Installation of submersible pump (either suitable for solar and wind driven generator

including suitable solar panels or for solar energy & power supply by generator, including suitable solar panels).

RWH material, PVC Rain gutters

material: PVCLength:

Product name

3M/4M/5M5.2 " pvc gutter

Sharp square typeMain color white,gray,brown and other color as requirement

 Advantages

1.ASA double-color extrusion, color never fade2.High temperature resistance, anti-aging, anti-oxidant, acid-base mold erosion resistance, oxidation resistance.3.Easy to cut and install4.Ethylene polymer material, leed-free, good UV performance5.recyclable

Quality guarantee 10years quality guaranteeAvailable Size dual wall 5.2inch, single wall 7inchDiameter for Rain Water Gutter 5.2"

Gutter:125*85mm*100mm, 3.2mm in thicknessDownspout:86*63mm, 1.9mm in thickness

Diameter for Rain Water Gutter 7 "

Gutter:150*130*120mm, 1.7mm in thicknessDownspout:100*80mm, 1.9mm in thickness

Rain Water Gutter length 4M/3M/5M or any length you want

Normal Environment tem-perature

-40℃-75℃

TAPPRO Brackish Water Reverse Osmosis MachinesSpecifications

- 3000 gallons per day (gpd) (17.4 M3/day)

Model: 3000BW

The Base Unit Includes:

• TFC Brackish Water RO Membrane

• 316SS High-Pressure Piping, Fittings, and Valves

• Safety Pressure Relief Valve

• 5-Micron Sediment Prefilter

• 316SS Pump

• Painted Steel or Powder-coated Aluminum Frame

• Fiberglass Pressure Vessels

• Automatic Feed Water Shut-off Valve