FRP Vessel 1865 – 4″ Opening 10 Bar Composite Pressure Tank

The FRP vessel 1865 is a robust composite pressure tank designed for water treatment systems where durability and corrosion resistance matter. Its fiberglass-reinforced plastic construction delivers long-lasting performance in filtration, softening, and reverse osmosis (RO) pre-treatment applications. Because this tank carries a 10 bar (150 psi) maximum pressure rating and features a 4″ media opening, it provides both strength and easy access for installation and maintenance.

This vessel is suitable for use in commercial, industrial, and larger residential systems that need reliable media housing to support effective water purification. Furthermore, its corrosion-resistant design means it continues to perform even in challenging water conditions.

Key Features & Benefits

• Corrosion-Resistant Composite Build

  • The FRP vessel 1865 uses a fiberglass-reinforced plastic (FRP) shell combined with a seamless polyethylene liner. This design resists rust and chemical damage, which helps extend tank life compared with metal alternatives.

• Large 4″ Opening for Easy Access

  • The 4″ threaded media opening makes it simple to load, inspect, or replace media such as sand, activated carbon, or resin. Additionally, this access point simplifies the installation of internal distributors and support systems.

• Strong Pressure Rating

• With a 10 bar (150 psi) operating limit, the tank supports higher pressure systems found in many commercial and industrial water treatment setups.

• Versatile Media Compatibility

  • This tank accepts various treatment media, including:

    • Sand for sediment removal

    • Activated carbon for taste, odour, and chlorine reduction

    • Ion-exchange resin for water softening

    • Multimedia blends for broader filtration

  • This versatility lets you tailor the vessel to your specific treatment needs.

• Low Maintenance & Durable Operation

  • Because corrosion is no longer an issue, the tank requires less routine maintenance and helps reduce downtime throughout its lifespan.

Technical Specifications

How It Works

The FRP vessel 1865 is designed to hold a chosen treatment media while water flows through under pressure. For example:

• Filled with sand, it removes suspended solids and turbidity.
• Loaded with activated carbon, it reduces chlorine, taste, and odor.
• Loaded with resin, it softens hard water by exchanging calcium and magnesium ions.

Because of its robust design and 4″ opening, this tank is easier to media load and service than smaller vessels. As water moves through the media under pressure, contaminants are trapped or transformed, helping deliver cleaner, safer water downstream.

Applications

• Commercial Water Filtration Systems — Removes dirt and sediment before fine polishing.
• Water Softening Systems — Houses resin for ion exchange to reduce hardness.
• Reverse Osmosis Pre-Treatment — Holds carbon or multimedia filters to protect RO membranes.
• Industrial Water Treatment — Supports flow and pressure demands in larger systems.
• Whole-House Entry Systems — Provides media housing for consistent water quality across an entire property.

Because it fits common pressure piping and control valve setups, the vessel integrates easily into existing systems as well as new builds.

Installation & Maintenance Tips

1. Place on a stable and level surface to ensure media sits correctly.
2. Match the threaded opening to your piping and media distributor size for best performance.
3. Pre-flush media to remove fines before start-up to prevent early clogging.
4. Regularly inspect seals and fittings to avoid leaks and ensure continued pressure integrity.

Following these steps helps maximize the lifespan and performance of your FRP tank.

Conclusion

The FRP vessel 1865 is a versatile and durable composite tank for water treatment applications that require corrosion resistance, high pressure tolerance, and easy access for media service. Whether you’re setting up filtration, softening, or RO pre-treatment stages, its strength and design ensure reliable performance for years. Choose this tank when you want long-term durability and simple serviceability in your water system setup.