Water FRP Vessel
Greeny is Chennai’s specialist in fiberglass reinforced plastic (FRP) water vessels – delivering lightweight, corrosion proof tanks that outperform traditional steel or concrete.
- Manufactured in Ambattur, Chennai
- Sized to your site and water
- Installation and service support

Why Choose Greeny FRP Vessels?
Built for Indian ConditionsChennai’s coastal humidity accelerates rust on metal tanks; our FRP construction is 100 % corrosion proof, ensuring hygiene and long service life even with saline ground water.
70 % Lighter than Steel Save on transport, crane hire, and rooftop structural support without sacrificing burst streng
High Pressure Ratings Standard vessels handle 10 kg/cm²; custom builds go up to 16 kg/cm² for demanding RO pre treatment lines.
Customizable Dimensions & Nozzles choose diameters from 8 inch to 120 inch, vertical or horizontal orientation, flanged or threaded inlets – we fabricate to your exact P&ID.
Minimal Life Cycle Cost non reactive resin means no periodic painting or cathodic protection; simple visual checks keep OPEX low.
Full Range of Water Vessels We Supply
Fiberglass Reinforced Plastic (FRP) Vessels
our flagship product
Stainless Steel Vessels (SS 304/316)
Polyethylene (PE) Rotomoulded Tanks
Reinforced Concrete Reservoirs
Epoxy Coated Carbon Steel Tanks
Marine Grade Aluminum Tanks
uPVC & CPVC Cartridges
Glazed Ceramic Vessels
Copper Cylinders
Glass Lined Steel Vessels
Hybrid Composite Tanks (FRP + Thermoplastic Liner)
Key Technical Features of Greeny FRP Vessels
Exceptional Strength & Durability
Multiaxial glass fibers, filament wound at controlled tension, deliver burst factors >4 × design pressure.
Lightweight Yet Sturdy
1 m³ FRP tank weighs ~55 kg compared to 180 kg in carbon steel.
Chemical & Corrosion Resistance
Vinyl ester inner layer resists acids, alkalis, and chlorine up to 200 ppm.
Thermal Stability
Operates from –10 °C to +70 °C without loss of modulus.
Applications
Residential & Commercial Water Filtration
sand, carbon, and softener columns for apartments, hotels, and hospitals.
RO Pre Treatment & Post Treatment
multimedia filters and remineralization vessels for bottling plants.
Industrial Wastewater Treatment
equalization, neutralization, and sludge conditioning tanks.
Desalination Plants
high pressure intake filters rated 15 bar
Agriculture & Drip Irrigation
lightweight portable storage on farms.
Swimming Pools & Spas
long life sand filters with smooth interior finish.
Fire Fighting Systems
non corrosive standby storage that meets TAC guidelines.
Product Categories & Quick Specs
| Category | Volume Range | Max Pressure | Typical Media |
|---|---|---|---|
| FRP Water Storage Tanks | 200 L – 50 kL | Atmospheric | Potable/Raw Water |
| FRP Sand Filter Vessels | 10 inch – 84 inch dia | 7–10 kg/cm² | Silica Sand, Anthracite |
| FRP Carbon Filter Vessels | 10 inch – 63 inch dia | 7 kg/cm² | Activated Carbon |
| Custom Built FRP Pressure Vessels | As per design | Up to 16 kg/cm² | Ion Exchange Resin, Specialty Media |
| Economy FRP Series | 8 inch – 36 inch dia | 6 kg/cm² | Budget RO Systems |
Why Industry Leaders Choose Greeny
In House Design & Filament Winding Plant
Zero dependency on import; shorter lead times.
Transparent Pricing
No hidden charges; detailed BOQ provided upfront.

Choose with confidence
Choosing the right filter housings and spares
- Confirm the flow rate and working pressure of the line.
- Pick the cartridge length and diameter (10", 20", jumbo) the system uses.
- Choose PP housings for general water and SS for hot, high-pressure or hygienic duty.
- Check inlet and outlet thread sizes before ordering.
- Keep a set of spare cartridges and O-rings on site.
Shop
Filter Housings & Spares you can order online
Prices and stock shown in the shop. For bulk orders or help choosing, ask us.
How we work
From first message to running system
- 01
Tell us the need
Share your requirement, site details and any water report or photos.
- 02
We review and size
We ask the right questions and size the system for your site.
- 03
Clear quotation
You get a quote with scope, specification and timelines.
- 04
Build, install, support
We manufacture, install, commission and stay available for service.
Related solutions
More in Filter Housings & Spares
Questions, answered
FAQs about Water FRP Vessel
Still unsure? Ask us directly or call +91 95000 55565.
What exactly is an FRP vessel?
A factory molded tank made from layers of glass fiber and thermoset resin, offering high strength to weight ratio and immunity to corrosion.
How long do FRP vessels last?
With routine inspection of gaskets and fittings, service life is typically 15–25 years; many Greeny units remain operational past 30 years.
Are FRP vessels suitable for RO plants?
Yes. Their pressure rating and chemical robustness make them the global standard for multimedia pre filters and softeners in reverse osmosis systems.
Can I customize size and nozzle orientation?
Absolutely. Provide your footprint or GA drawing and we will fabricate to match, including side manway, sight glass, and skid mounting as required.
How do FRP vessel prices compare with stainless steel?
Capex is 30–40 % lower, and lighter weight reduces installation costs further – delivering the best cost to performance ratio over the vessel’s life.
What micron rating should I use?
For RO pre-filtration 5 micron is common; sediment pre-filters often use 20 to 50 micron. The right rating depends on your water and the equipment you protect.
When should I choose a stainless steel housing?
Use SS housings for higher pressures, hot water, hygienic applications or where the housing must last outdoors.
Can you make custom housings?
Yes. We make customised housings for special flow rates, cartridge counts and connections. Share the duty conditions and we will propose a design.
Do you supply RO spares?
Yes. Membranes, membrane housings, pumps, cartridges, valves and other RO spares are available. Share your plant details for a matching list.
How often should cartridges be changed?
When pressure drop across the housing rises or flow falls noticeably. In many systems that is every one to three months, but water quality decides.
Start a conversation
Tell us what you need
Share a few details about Water FRP Vessel and your site. We reply on working days with questions or a quote.
Talk to a person
Speak with the Greenly team
No call centre. Your message reaches the people who design and build the system.
- +91 95000 55565
- WhatsApp +91 95000 55565
- greenly@greenly.co.in
- 101, 102 & 103 Tass Industrial Estate, SIDCO Industrial Estate, Ambattur, Chennai 600058
Visits by appointment - Open 10:00 am – 5:30 pm



