3672 FRP Vessel
Model: 3672
Material: PE+FRP
Opening: Top/bottom 4 inch, threaded
Diameter: 36 inches (920 mm)
Height: 72 inches (1850 mm)
3672 FRP Vessel Volume: 970L
Max working temperature: 50℃
Max working pressure: 150 PSI (1.03MP)
Max vacuum: 17KPa(5″Hg)
Flowrate: 13.2–16.2 m³/h
Products Description
The 3672 FRP Vessel is a fiberglass-reinforced plastic pressure vessel designed for RO pretreatment and medium to large filtration systems.
It is commonly used in projects with a daily water treatment capacity of 300–500 m³/day, depending on operating flow rate and system configuration.
The vessel combines a seamless PE inner liner with a filament-wound FRP outer shell. This structure provides stable pressure performance, corrosion resistance, and long service life.
The 3672 model is widely selected for systems requiring higher flow rates without moving to oversized vessels.
Key Features
| Parameter | Technical Design | Engineering Value |
|---|---|---|
| System Capacity | 300–500 m³/day (guideline) | Matches medium to large RO pretreatment systems |
| Operating Pressure | 150 PSI (1.03 MPa) | Stable upstream pressure for RO membranes |
| Burst Pressure | Up to 600 PSI (≈4× safety factor) | Withstands pressure spikes and protects the system |
| Inner Liner | Seamless one-piece PE liner | Eliminates leakage and contamination risks |
| Outer Structure | Continuous fiberglass + epoxy resin | High mechanical strength and long service life |
| Base Options | PP round base or FRP reinforced base | Adapts to flat or uneven installation surfaces |
| Opening Design | 4" threaded top & bottom | Compatible with standard filtration piping |
| Threaded Insert | Glass-filled HDPP material | Improved thread strength and chemical resistance |
Detailed Technical Parameters – 3672 FRP Vessel
| Item | Specification |
|---|---|
| Product Type | FRP Pressure / Filter Vessel |
| Model | 3672 |
| Brand | INK-BLUE |
| Manufacturer | Xi'an Ink-blue Environmental Protection Technology Co., Ltd. |
| Diameter | 36 inch (920 mm) |
| Height | 72 inch (1850 mm) |
| Opening Type | Top & bottom, 4-inch threaded |
| Inner Liner Material | Polyethylene (PE), seamless |
| Outer Shell Material | FRP (fiberglass + epoxy resin) |
| Total Volume | 970L |
| Recommended Flow Rate | 13.2 – 16.2 m³/h |
| Max Working Pressure | 150 PSI (1.03 MPa) |
| Max Working Temperature | 50 ℃ |
| Max Vacuum | 17 kPa (5″ Hg) |
| Weight | Approx. 90 kg |
| Recommended Media Filling | 70–80% |
technical drawing:
Included accessories:
✅ A standard storage tank includes the tank itself, as well as the opening and the base.
❌ A complete system should also include core components such as a water distributor, automatic valve, and central pipe, which are not included by default. If you require these components, please specify this when requesting a quote.
The image below shows the installation positions of components such as the water distributor, automatic valve, and central pipe within the fiberglass pressure tank. Different models require different components, so the specific model must be considered.
How many 3672 FRP vessels can be packed in one container?
👉 The volume of a 36 x 72 FRP vessel is approximately 1.8 m³. Therefore:
| 20GP | About 15pcs |
| 40HG | About 32pcs |
System Matching & Flow Logic
The 3672 FRP vessel operates under continuous filtration mode, not batch processing.
At a recommended flow rate of 13.2–16.2 m³/h:
- 13.2 m³/h × 24 h ≈ 317 m³/day
- 16.2 m³/h × 24 h ≈ 389 m³/day
Actual daily capacity depends on operating hours, water quality, and backwash frequency.
The vessel size does not limit daily throughput, as water continuously passes through the filter media.
Applications
The 3672 FRP Vessel is typically used as:
- RO pretreatment pressure vessel: For multimedia or carbon filtration before RO membranes.
- Multimedia filtration vessel: Removal of suspended solids and turbidity.
- Activated carbon filtration vessel: Chlorine and organic matter removal.
- Industrial packaged water treatment systems: Skid-mounted or containerized units.
- Commercial and industrial water treatment projects: Where stable flow and pressure performance are required.
Manufacturing, Quality & Testing
- Manufactured under ISO 9001 quality management system
- Seamless PE liner molding and controlled filament winding
- Temperature-controlled curing process
- 100% factory pressure testing before shipment
- Final inspection of dimensions, openings, and surface quality
NSF / ROHS certification is available for selected models and liner types.
Certifications
ASME
CE
ISO 9001
NSF
EMS
QMS
Packaging & Logistics
Production cycle: 3-7 working days
Shipping time: Depends on the shipping method. By sea, it's generally 20-30 days, depending on the shipping company and customs clearance.
MOQ: 10
Payment terms: T/T, L/C
Quality certifications: NSF, CE, ISO9001
Product colors: Original color and blue are standard colors; other colors require customization.
Packing: Small-diameter FRP tanks are packaged in cardboard boxes, while large-diameter tanks are packaged with bubble wrap.
FAQ
What type of systems is the 3672 FRP vessel suitable for?
It is mainly used for RO pretreatment, multimedia filtration, and carbon filtration systems with medium to large flow rates.
How is daily treatment capacity calculated?
Daily capacity depends on operating flow rate and running hours, not vessel volume.
The 3672 vessel typically supports 300–500 m³/day under continuous operation.
Why does the 3672 use 4-inch threaded openings instead of flanges?
For 36-inch diameter vessels, 4-inch threaded openings provide sufficient strength and sealing for standard filtration systems while simplifying installation.
Can the vessel be customized?
Yes. Base type, liner material, and opening configuration can be customized based on project requirements.
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