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Technical Datasheet for Fiberglass Reinforced Plastic (FRP) Vessels in Water Treatment Plant

FRP Multimedia Vessels


Product Description

FRP Multimedia Vessels are premium-grade fiberglass reinforced plastic (FRP) pressure vessels engineered for water treatment applications such as multimedia filtration, activated carbon filtration, water softening, and reverse osmosis pre-treatment systems. Manufactured with food-grade HDPE liners and reinforced composite fiberglass shells, the vessels provide high strength, corrosion resistance, lightweight handling, and long operational life.


1. General Specifications

Parameter Specification
Product Type FRP Multimedia Vessel
Vessel Construction Fiberglass Reinforced Plastic (FRP)
Internal Liner Food Grade HDPE
Operating Pressure 150 psi (10.5 bar)
Burst Pressure 600 psi
Operating Temperature 1 – 50°C (34 – 122°F)
Maximum Vacuum 140 mm Hg
Minimum Exposed Temperature -30°C (-22°F)
Opening Configuration Top & Bottom Openings
Certifications NSF, ACS
Additional Compliance KTW & W270 (Applied)
Warranty 10 Years Residential / 5 Years Commercial & Industrial

2. Key Features

  • High-strength composite FRP construction
  • Lightweight body — approximately one-third the weight of steel vessels
  • Food-grade HDPE inner liner suitable for potable water applications
  • Excellent corrosion and chemical resistance
  • Reinforced structural base for impact and abrasion resistance
  • Dimensional stability with attractive external finish
  • Wide range of vessel sizes available
  • Compatible with standard water treatment accessories and fittings
  • Reduced installation and transportation costs

3. Performance & Testing

Test Type Specification
Pressure Cycle Test 250,000 cycles from 0–150 psi
NSF Requirement 100,000 cycles
Burst Test Pressure 600 psi
Burst Test Rating 4 × operating pressure

4. Model Selection Table

Model Dimensions (mm) Volume (L) Top Opening Bottom Opening
13 × 54 334 × 1440 103.6 2.5” 2.5”
16 × 65 410 × 1670 187.7 2.5” 2.5”
18 × 65 450 × 1670 237 4” 4”
21 × 62 530 × 1590 312 4” 4”
24 × 72 600 × 1850 415 4” 4”
30 × 72 750 × 1850 640 4” 4”
36 × 72 900 × 1850 850 4” 4”

Technical Datasheet for Fiberglass Reinforced Plastic (FRP) Vessels in Water Treatment Plant


5. Applications

FRP Multimedia Vessels are suitable for:

  • Multimedia Sand Filters
  • Activated Carbon Filters
  • Water Softening Systems
  • Reverse Osmosis Pre-Treatment
  • Industrial Water Treatment Plants
  • Commercial Water Purification Systems
  • Borehole Water Treatment Systems
  • Municipal Water Treatment Applications

6. Advantages

Feature Benefit
Composite FRP Body Corrosion-free long service life
HDPE Food Grade Liner Safe potable water application
Lightweight Construction Easy handling and installation
High Pressure Rating Reliable industrial performance
Reinforced Structure Improved durability and stability
Multiple Sizes Available Flexible system integration
Certified Manufacturing Compliance with international standards

7. Standard Scope of Supply

The vessel package may include:

  • FRP Pressure Vessel
  • Base Support
  • Central Distributor Tube (Optional)
  • Top/Bottom Openings
  • Compatible Fittings & Accessories (Optional)

8. Storage & Handling Guidelines

  • Preferably store indoors or under shade away from direct UV exposure.
  • Avoid impact or dropping during transportation and installation.
  • Ensure vessels are installed on stable and level foundations.
  • Operate within specified pressure and temperature limits.

9. Typical Installation Arrangement

Raw Water Source → Feed Pump → Multimedia Filter Vessel → Activated Carbon Filter → Softener → Cartridge Filter → Reverse Osmosis System → Treated Water Tank.

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