Wellsys RO-400 – Reliable 400 GPD Water Purification System
The Wellsys RO-400 is a powerful reverse osmosis purifier designed to meet the needs of large households, offices, and commercial spaces. With a capacity of 400 GPD and 5-stage purification, it consistently delivers safe and purified water, whether for daily family use or continuous demand in busy environments.
Built in Vietnam and equipped with TORAY membrane technology, this Wellsys water purifier combines quality, performance, and reliability. If you’re comparing RO water purifier installation in Dhaka or exploring the Wellsys water purifier price in Bangladesh, this unit offers long-term value for any user.
Advanced 5-Stage Filtration Process
The Wellsys RO-400 uses a structured, multi-stage filtration system to eliminate impurities and ensure the highest quality water output:
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Sediment Filtration – Removes sand, rust, and larger particles
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Pre-Carbon Filtration – Filters chlorine, odour, and organic compounds
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RO Membrane (TORAY) – Targets heavy metals, salts, and microscopic contaminants
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Post-Carbon Filtration – Improves taste and removes leftover odours
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UV Sterilization – Neutralises harmful bacteria and viruses
This comprehensive system makes it a top choice among those seeking the best water filter purifier or comparing 5 stage water purifier price in Bangladesh.
Why the Wellsys RO-400 Is a Smart Choice
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High Output: Delivers up to 67L per hour, serving 85–100 users
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Household & Commercial Ready: Reliable for both household water purifier setups and commercial use
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Durable Design: TORAY membrane ensures consistent performance
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Tank Storage: Comes with an 11-gallon reserve tank for uninterrupted supply
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Trusted Support: Available with full RO water purifier service in Dhaka and beyond
Whether you’re looking for the best water purifier in Bangladesh or reviewing the water purifier in Bangladesh for home or office, the Wellsys RO-400 delivers where it counts.
Compatible Accessories for Long-Term Use
To support the performance and longevity of your RO system, WaterMan offers a full range of compatible RO water plant accessories, including:
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Replacement RO membranes and filters
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Pre-carbon and post-carbon cartridges
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UV lamps and sterilization units
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Pumps, faucets, and tubing
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11G and 20G reserve tanks
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Housing sets, wrenches, and fittings
These accessories ensure your household water purifier or commercial unit runs smoothly year-round. Whether you’re maintaining a Wellsys, Sanaky, or any other system, you’ll find what you need right here.
Need help selecting the right part? Our team is ready to assist with guidance and recommendations.
Why Choose WaterMan
At WaterMan, we offer more than just products, we provide complete service for your peace of mind:
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RO water purifier installation in Dhaka
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Reliable water purifier service and support across Bangladesh
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Assistance with water purifier transfer, setup, and maintenance
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Genuine parts and accessories for long-term usage
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Stay informed with expert insights from our regularly updated WaterMan Blog, covering tips, usage guides, and updates on water purifier in Bangladesh
We’re committed to helping you keep your water system clean, consistent, and stress-free.






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