FRP Vessel 1665 – 4″ Opening 10 Bar Composite Pressure Tank

The FRP vessel 1665 is a durable, corrosion-resistant composite pressure tank designed to hold media for a wide range of water treatment applications. Thanks to its fiberglass-reinforced plastic (FRP) construction with a seamless inner liner, this vessel offers excellent strength and long service life. Moreover, its 4″ opening and 10 bar (150 psi) pressure rating make it suitable for many commercial, industrial, and larger residential systems where reliable performance matters. (puritech.co.za)

This tank is built to support filtration, softening, and reverse osmosis (RO) pre-treatment configurations. Furthermore, it works with a range of media types to tailor treatment for your specific water quality needs.

Key Features & Benefits

• Corrosion-Resistant Composite Build

  • Constructed with fiberglass-reinforced plastic, the FRP vessel 1665 resists rust and chemical wear, giving you dependable performance in diverse environments. Because it does not corrode like metal tanks, it stays reliable over time.

• 4″ Media Opening for Easy Access

  • The threaded 4″ top opening provides generous access for loading media such as sand, carbon, resin, or multimedia blends. In addition, this larger opening simplifies maintenance and internal adjustments.

• High Pressure Capability

  • Rated up to 10 bar (150 psi), this tank handles the pressure demands of many water systems, including municipal feed, booster pumps, and industrial flows.

• Media Flexibility

  • You can fill this vessel with various treatment media to serve different roles:
    • Sand: Removes sediment and turbidity.
    • Activated Carbon: Improves taste, odour, and chemical removal.
    • Ion-Exchange Resin: Softens hard water.
    • Multimedia Mixes: Targets a broader range of contaminants.

• Low Maintenance

  • Because this tank resists corrosion and chemical breakdown, it requires less frequent servicing than many steel or iron alternatives.

Technical Specifications

How It Works

The FRP vessel 1665 holds your chosen media inside its pressure-rated body so that incoming water flows through under pressure. For instance, water passing through sand media will have sediment removed, while activated carbon traps chlorine and organic compounds. When filled with ion-exchange resin, the tank can soften hard water by trading calcium and magnesium ions for sodium.

Because the vessel uses FRP material and a seamless inner liner, it resists corrosion and leakage. In addition, the 4″ opening allows straightforward media loading and inspection so you can maintain optimal performance.

Common Applications

• Water Filtration Systems — Removes suspended solids and prepares water for finer polishing.
• Water Softeners — Houses resin to remove hardness minerals.
• RO Pre-Treatment — Holds carbon or multimedia filters to protect RO membranes.
• Commercial & Industrial Water Treatment — Supports higher flow and pressure systems.
• Whole-House Point-of-Entry Systems — Provides consistent treatment across all water points.

Because the FRP vessel 1665 is compatible with common plumbing fittings, it integrates easily into existing systems or new installations.

Installation & Maintenance Tips

1. Place the tank on a stable, level surface before loading media.
2. Use proper fittings and pressure regulators to connect with your water system.
3. Flush media on first use to remove dust or fines before regular operation.
4. Check seals and connections after pressurization to confirm leak avoidance.

Well-maintained installations help extend life and improve performance over time.

Why Choose This Vessel?

The FRP vessel 1665 blends strength, corrosion resistance, and accessibility in one composite tank. Its high pressure rating and easy media access make it a reliable choice for water filtration, softening, and RO pre-treatment. Furthermore, its durable build and ease of service reduce maintenance needs and help keep your water system running efficiently.