Fiberglass (FRP) Tanks for Water Treatment – Corrosion-Resistant, NSF-Certified Pressure Vessels for Softening, Filtration & RO Pretreatment
Steel and PVC tanks corrode, crack, or degrade when exposed to regenerants like salt brine, chlorine, or acidic cleaners-leading to leaks, system failure, and costly downtime. Our NSF/ANSI 61-certified fiberglass (FRP) vessel for water treatment offers unmatched durability, chemical resistance, and long-term reliability in even the harshest environments. Engineered with high-strength glass-reinforced polyester or vinyl ester resin, our FRP pressure vessels are the industry standard for residential softeners, municipal filtration systems, industrial demineralization, and RO pretreatment worldwide.
Full choice of pressure tanks from 6''-72'' in diameter and from 13''-110'' in height. Available in natural, blue, black, gray, and any other colors on request.
Why Choose FRP Vessel Over Other Materials?
* Zero Corrosion: Resists salt, chlorine, acids, alkalis, and oxidizers-unlike steel or galvanized tanks.
* NSF/ANSI 61 Certified: Safe for potable water contact; meets U.S. EPA and global drinking water standards.
* High Pressure Rating: Standard 150 psi (10 bar) at 70°F (21°C)-suitable for pressurized softening and filtration.
* Lightweight Yet Strong: 70% lighter than steel but with superior tensile strength and impact resistance.
* Long Service Life: 20+ years with minimal maintenance-no painting, lining, or cathodic protection needed.
* UV-Stabilized Exterior: Optional UV-resistant gel coat for outdoor installations (standard on all models).
Complete FRP Vessel Portfolio for Every Water Treatment Need
1. Water Softener Tanks
Diameters: 6", 8", 10", 13", 16", 21"
Heights: 48" to 72"
Typical Use: Residential & commercial ion exchange softening with NaCl regeneration
2. Media Filter Tanks (Sand, Carbon, Greensand)
Diameters: 10" to 48"
Custom Heights Available
Features: High-flow laterals, reinforced dome, optional sight glass & air release valve
3. Dealkalizer & Demineralizer Vessels
Special Resin Compatibility: Vinyl ester resin option for strong acid/base exposure
Configurations: Single, dual, or multi-bed systems
4. RO Pretreatment & Brine Storage Tanks
Non-Pressurized Options: Open-top or closed FRP storage tanks for antiscalant, caustic, or brine solutions
Standard Dimensions & Capacities
|
Type |
Size |
Opening |
Flow/m3 |
Volume |
Cubage |
|
817 |
Φ200×435 |
2.5″ |
0.1–0.3 |
0.0178 |
11.2 |
|
835 |
Φ200×890 |
2.5″ |
0.2–0.4 |
0.0362 |
24 |
|
844 |
Φ200×1110 |
2.5″ |
0.2–0.5 |
0.0452 |
32 |
|
917 |
Φ220×450 |
2.5″ |
0.3–0.4 |
0.0515 |
35 |
|
1035 |
Φ250×913 |
2.5″ |
0.5–1.0 |
0.0565 |
38.5 |
|
1054 |
Φ250×1390 |
2.5″ |
0.6–1.5 |
0.0868 |
61.8 |
|
1252 |
Φ300×1340 |
2.5″ |
1.6–2.2 |
0.1206 |
84.8 |
|
1254 |
Φ300×1640 |
2.5″ |
1.8–2.4 |
0.149 |
106.2 |
|
1454 |
Φ350×1390 |
2.5″ |
2.0–2.5 |
0.1478 |
103.5 |
|
1465 |
Φ350×1640 |
2.5″ |
2.5–3.0 |
0.2045 |
145.5 |
|
1665 |
Φ400×1640 |
2.5″ |
3.2–4.5 |
0.2672 |
186 |
|
2069 |
Φ500×1750 |
4″ |
4.0–5.5 |
0.4375 |
325 |
|
2472 |
Φ600×1850 |
4″ |
6.2–8.2 |
0.666 |
440 |
|
3072 |
Φ750*1850 |
4″ |
7.2–12.2 |
1.0406 |
675 |
|
3672 |
Φ900×1850 |
4″ |
13.2–16.2 |
1.4985 |
1080 |
|
4072 |
Φ1000×1940 |
4″ |
14.3–19.5 |
1.5229 |
1240 |
Packages of FRP Vessels
Where Are Our FRP Tanks Used For?
* Residential Water Treatment: Whole-house softeners, iron filters, carbon filters
* Commercial Buildings: Hotels, restaurants, laundromats, car washes
* Municipal Water Plants: Greensand filtration, nitrate removal, arsenic adsorption
* Industrial Process Water: Boiler feed pretreatment, cooling tower makeup, parts washing
* Food & Beverage: Ingredient water softening, CIP rinse storage
* Pharmaceutical & Electronics: DI pretreatment, ultra-pure water polishing
* Agriculture & Aquaculture: Irrigation water conditioning, hatchery systems
Built to Your Exact Requirements
We offer full customization for OEMs, EPCs, and system integrators:
* Non-standard diameters (up to 96") and heights
* Special port configurations (side, multiple, flanged)
* Vinyl ester resin for aggressive chemicals (e.g., sulfuric acid, sodium hypochlorite)
* Insulation jackets for cold climates
* Private labeling & custom colors
* Skid-mounted multi-tank assemblies
Install Instruction of FRP Vessel
Why Partner With Us?
100,000+ FRP tanks installed in 20+ countries
In-house filament winding with real-time quality control
Full documentation: Certificates of Compliance, test reports, drawings
Fast lead time: Standard sizes shipped in 3–5 days; custom in 2–3 weeks
10-year warranty against manufacturing defects and delamination
FAQ
Q1: Can FRP tanks be used outdoors?
A: Yes. All our tanks include a UV-resistant gel coat that prevents resin degradation from sunlight. For extreme climates, we recommend an insulation jacket or shade cover.
Q2: What's the difference between polyester and vinyl ester resin?
A: Polyester resin is cost-effective and suitable for salt, chlorine (<5 ppm), and mild pH ranges (5–9). Vinyl ester resin offers superior resistance to strong acids (e.g., H₂SO₄), bases (NaOH), and high chlorine-ideal for dealkalizers or chemical storage. We'll recommend the right resin based on your application.
Q3: Do you supply tanks with distributors and valves?
A: We provide tanks with or without internal distributors (laterals). For complete softener/filter units, we partner with control valve manufacturers (Clack, Fleck, Autotrol) or can ship as a bare vessel for your assembly.
