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Sintex ISI Double Layer Water Tanks

The Trusted choice of India – Our most preferred ISI tank, suitable for fundamental needs of water storage tanks

  • 5 years warranty
  • ISI Standard
  • Conforms to standards specified in 12701-1996 (Reaffirmed 2006)
  • Ultra durable
  • 100% food grade virgin plastic
  • Available in Black

11,355

To place an order for tanks in 15,000L or 20,000L capacities, please contact our team.

Price includes delivery (up to 15 km) and taxes. Additional delivery charges apply beyond 15 km. Delivery is limited to ground floor. Installation charges apply separately. Orders will be delivered within 10 days.

Warranty:

5 YEAR

or
  • Description
  • Features & Benefits
  • Range & Specifications
  • FAQs

The Trusted Choice of India, this ISI-certified tank is ideal for essential water storage needs. Made from 100% food-grade virgin plastic and FDA-approved, it ensures safe and clean water. The ultra-durable design features two layers for added strength, with a multi-ribbed structure for long-lasting durability. Conforming to ISI standards (12701-1996), this tank is UV-stabilized and phthalate-free, ensuring safe storage. Available in black, it comes with a 5-year warranty for added peace of mind.

Sintex ISI Double Layer Water Tank: Reliable Storage That Feels Effortless

Some choices feel right the moment you make them. The Sintex double layer water tank is one of those choices. It has been trusted for decades across homes, farms, clinics, and commercial spaces because it delivers exactly what every household expects from a water tank. Clean storage. Long-lasting durability. Zero fuss. 

When you choose the Sintex ISI double layer water tank, you are choosing a product built with a clear purpose. To store water safely day after day without demanding maintenance or attention.

We design every unit to meet the expectations of Indian weather, water quality, and usage patterns. Whether the tank is exposed to harsh sunlight or constantly holding water, its performance remains stable. The Sintex double-layer water tank is more than just a utility item. It is a quiet assurance that water will always stay safe and dependable.

What Makes It Worth Trusting

These tanks are the products of state-of-the-art technology to resist nature's wrath for long years without the parts being deformed, fissured, or the elements being released into the water stored. The Sintex ISI double layer water tank is a product that meets the ISI standards, which means that every tank is checked, tested, and verified for safety.

Some core advantages include:

1) Strong multilayer construction that prevents deformation and leakage

The water tank with a double layer of Sintex is a product that is layered and thus strong enough to resist water pressure for a long time without deformation or cracking. The two surfaces not only protect the tank against everyday physical impact but also prevent the penetration of water into the tank and the formation of weak points. This ensures long-term protection, even in high usage households where durability truly matters. 

Every Sintex ISI double-layer water tank is crafted to retain its original shape, so you never have to worry about structural failure.

2) UV stabilisation that protects the material from sunlight damage

If a water tank is kept outside where it is exposed to the scorching sun, it will fade, weaken, and, over a period, become brittle. In the case of UV stabilisation, the outer layer of a Sintex double-layer water tank is safeguarded against the rays of the sun, so it stays strong and reliable over the years. 

The addition of this protection layer guarantees not only the continued strength and appearance of the tank but also the satisfaction of the hygiene standards, even if it is used continuously in an open area. This makes the Sintex ISI double-layer water tank climate-friendly.

3) 100 per cent food-grade material for secure drinking water storage

The most important aspect in storing drinking water is safety. Every Sintex double layer water tank is fabricated with certified food-grade plastic that shields water from contamination. This allows purity and taste to be preserved, thus the water is still suitable for the purposes of cooking, bathing, and drinking. 

With this standard applied uniformly across all models, every Sintex ISI double layer water tank delivers proven safe storage for daily household consumption.

4) Long-lasting finish that remains hygienic with minimal cleaning

The smoothness of the tank and the strictly regulated porosity of the tank wall do not allow the dirt to lodge there or the growth of microorganisms. Thus, the cleaning cycle becomes easier and less frequent while the water remains clean and ​‍​‌‍​‍‌fresh. 

A Sintex double layer water tank retains a neat appearance with low maintenance needs, making it a dependable and hygienic solution. The consistency of quality ensures that every Sintex ISI double-layer water tank works efficiently without requiring constant upkeep.

5) ISI compliance, which ensures quality consistency across all capacities

Every Sintex double-layer water tank is tested and certified to meet ISI standards, ensuring manufacturing excellence and safety benchmarks are maintained. This ensures that, regardless of the capacity, the same level of performance and reliability is guaranteed. 

With the Sintex ISI double layer water tank, customers experience trusted quality backed by long-standing industry credibility and compliance assurance. Every feature in the Sintex double-layer water tank serves a specific purpose. Safety that stays reliable for years.

Built for Practical Everyday Needs

We understand that a water tank is not a luxury. It is a daily necessity. That is why the Sintex ISI double layer water tank is created with features that matter the most. Some everyday benefits include:

  • Easy installation
  • Suitable for overhead and underground storage
  • Compatible with multiple plumbing systems
  • Stable structure even when filled to full capacity
  • Reduced algae formation to maintain cleaner water
  • Designed for long usage cycles

This is why the Sintex double layer water tank remains one of the most preferred choices across India.

Applications

These tanks fit nicely into several environments, including:

  • Residential buildings
  • Schools and institutions
  • Hospitals and clinics
  • Agricultural use
  • Industrial and commercial premises

Wherever long-term reliability matters, the Sintex ISI double layer water tank fits naturally.

Comparison Table

Feature

Sintex ISI Double Layer Tank

Regular Non-certified Tank

ISI Certification

Yes

No

Food Grade Material

Yes

Sometimes

UV Stabilized

Yes

Rare

Long Warranty

Yes

Limited or none

Durability

High

Varies

Safety for Drinking Water

Assured

Not guaranteed

This comparison highlights why the Sintex double-layer water tank stands out in terms of long-term performance and reliability.

Why Customers Choose Sintex

  • We continue to innovate because storage requirements are never static. What remains constant is the trust our users place in us.
  • The Sintex ISI double-layer water tank is a testament to years of engineering, testing, and improvements. From rugged strength to safe water contact surfaces, every detail is designed to make life easier.
  • When you invest in a Sintex double layer water tank, you are not just buying a product. You are choosing stability, safety, and peace of mind for years to come.

Great utility feels effortless. The Sintex double layer water tank is built for users who value long-term reliability and safe storage. When water matters to every part of life, your storage solution should be dependable. With the Sintex isi double layer water tank, every drop stored stays protected.

Anti- Algae

Anti- Algae

Ultra Durable

Ultra Durable

100% Virgin Plastic

100% Virgin Plastic

100% Food Grade Plastic

100% Food Grade Plastic

ISI Standard

ISI Standard

It shows that the tank satisfies the quality and safety standards established by the Indian Standards Institute (ISI) for reliable operation.

Indeed, they are made for heavy-duty commercial and residential use.

Dust and contamination are kept out by its tightly fitting, threaded lid.

Yes, Sintex always provides guidance and dealer support for installation.

Yes, protection from sunlight is guaranteed by the UV-stabilized layer.

These tanks can easily last more than ten years with the right care.

Yes. The Sintex ISI double layer water tank is built using food grade material and is safe for potable water.

The tank is designed for long-term use. The quality and durability make the Sintex double layer water tank a dependable choice for many years.

Yes. Due to UV stabilisation, the Sintex ISI double layer water tank works efficiently outdoors.

Yes. The material and double layer design help reduce algae buildup and maintain cleaner water.

Maintenance is minimal. The Sintex ISI double layer water tank requires only occasional cleaning to keep the storage hygienic.

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