Kali Tanki Guide: Black Plastic Water Tank Sizes, Indicative Rates, Why It Is Black Outside, Three-Layer Meaning, Heat, Cleaning, Fitting and Buying Tips for Homes in Pakistan
Kali tanki means a black water tank, the common plastic tank seen on rooftops across Pakistan, and buyers searching for it want sizes, prices and quality tips. Prices run from about PKR 6,000 for a small tank to PKR 130,000 for a 5000 litre tank. This page covers sizes, indicative rates, why the tank is black outside, three-layer meaning, heat, cleaning, fitting and buying tips. For full rates see water tank prices, 1000 litre tank prices and blue water tanks.
What kali tanki means
Kali tanki is the everyday name for the black polyethylene tank. Black on the outside blocks sunlight, which stops algae growing inside, and the inner layer is often white or light so you can see dirt. It comes in sizes from 200 to 5000 litres.
Indicative rates
These ranges show common retail figures.
| Size | Indicative range |
|---|---|
| 200 litres | PKR 6,000 - 9,000 |
| 500 litres | PKR 9,000 - 14,000 |
| 1000 litres | PKR 16,000 - 26,000 |
| 2000 litres | PKR 32,000 - 50,000 |
| 5000 litres | PKR 85,000 - 130,000 |
Prices move with brand, model, size and stock. Use these ranges to judge a quote, then compare the exact model and what is included.
Three-layer meaning
A three-layer tank has black outer, a middle layer and white inner. It blocks light and is stronger than a single-layer tank. Ask for the layer structure and the weight.
Heat in summer
Black tanks absorb heat, so rooftop water can get hot in summer. Shade the tank, paint it white or silver or choose an insulated one. Pipes should be shaded too.
Cleaning
Clean the tank twice a year by draining, scrubbing with a soft brush and rinsing. See water tank cleaning. A white inside makes dirt easy to see.
Buying tips
Choose a known maker, compare weight and warranty, check the lid fit and look for UV-stabilised plastic. Very cheap tanks may crack in a few years.
Fitting
Place it on a level, strong base, fit a float valve, outlet and overflow, and cover the vent with mesh. Fixed plumbing and tank connections should be done by a licensed plumber.
What to check before buying
- Layers. Three
- Weight. Heavy for thick walls
- Lid. Tight fit
- Warranty. Written
Black or blue
Blue tanks are common too and similar in function, as long as the outer layer blocks light. See blue water tanks.
Before you decide
Choose a three-layer tank from a known maker, shade it against heat and keep it clean. A kali tanki is a simple, durable water store. Before paying, ask the seller for the layer structure and weight in writing, check the lid and the threads on delivery and keep the invoice, because these small steps decide whether the tank gives ten years of service or fails in three.
Frequently Asked Questions
A black plastic water tank, the common rooftop tank in Pakistan. Ask for the specification in writing so you can compare quotes on the same basis. Check the warranty terms and who honours them before you pay. Measure carefully and confirm sizes with the seller before ordering.
To block sunlight and stop algae growing inside. Check the warranty terms and who honours them before you pay. Measure carefully and confirm sizes with the seller before ordering. Rates and stock change, so confirm the current position before you commit. If you are unsure, send a photo and the measurements and we will advise.
A 1000 litre tank is about PKR 16,000 to 26,000. Measure carefully and confirm sizes with the seller before ordering. Rates and stock change, so confirm the current position before you commit. If you are unsure, send a photo and the measurements and we will advise.
It can in summer, so shade or paint it white. Rates and stock change, so confirm the current position before you commit. If you are unsure, send a photo and the measurements and we will advise. Ask for the specification in writing so you can compare quotes on the same basis.
At least twice a year. If you are unsure, send a photo and the measurements and we will advise. Ask for the specification in writing so you can compare quotes on the same basis. Check the warranty terms and who honours them before you pay.
Send the details and a photo on WhatsApp. We confirm what we can supply and reply with a written rate that lists the model, size, warranty and delivery, so you can compare it with other quotes on the same scope. Rates and stock change, so confirm the current position before you commit.
Buying a black tank?
Send the details and a photo. We reply with a written rate.