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:
Sediment Filtration – Removes sand, rust, and larger particles
Pre-Carbon Filtration – Filters chlorine, odour, and organic compounds
RO Membrane (TORAY) – Targets heavy metals, salts, and microscopic contaminants
Post-Carbon Filtration – Improves taste and removes leftover odours
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
High Output: Delivers up to 67L per hour, serving 85–100 users
Household & Commercial Ready: Reliable for both household water purifier setups and commercial use
Durable Design: TORAY membrane ensures consistent performance
Tank Storage: Comes with an 11-gallon reserve tank for uninterrupted supply
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:
Replacement RO membranes and filters
Pre-carbon and post-carbon cartridges
UV lamps and sterilization units
Pumps, faucets, and tubing
11G and 20G reserve tanks
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:
RO water purifier installation in Dhaka
Reliable water purifier service and support across Bangladesh
Assistance with water purifier transfer, setup, and maintenance
Genuine parts and accessories for long-term usage
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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