RO Membrane Pressure Vessel
Operating Temp Range: 2°C ---59°C
Operating pH Range: 3 – 11
Cleaning pH Range: 2 – 12
Number of elements: 1-6
Payment term: T/T, West Union, etc.
RO Membrane Pressure Vessel - High-Pressure FRP Housing for RO Systems
The RO Membrane Pressure Vessel is an essential component in reverse osmosis (RO) and desalination systems, built to withstand high operating pressure and corrosive conditions.
Crafted from epoxy-coated fiberglass-reinforced plastic (FRP), it ensures maximum durability, chemical resistance, and long-term stability even under continuous operation.
Compatible with standard 2.5", 4", and 8" RO membranes, the vessel supports pressures from 300 PSI up to 1800 PSI, making it ideal for industrial, municipal, and commercial RO systems worldwide - from brackish water treatment to seawater desalination.
Technical Specifications
| Parameter | Description |
|---|---|
| Product Name | RO Membrane Pressure Vessel |
| Material | Fiberglass Reinforced Plastic (FRP) + Epoxy |
| Models | 2514 / 2521 / 2540 / 4040 / 8040 |
| Size Options | 2.5", 4", 8" |
| Pressure Rating | 300 / 450 / 600 / 800 / 1000 / 1200 / 1500 / 1800 / 2000 PSI |
| Port Design | End Port / Side Port |
| pH Range | 3–11 (Operation) / 2–12 (≤30 mins Cleaning) |
| Operating Temperature | -10°C ~ +49°C |
| Process | Computer-Controlled Filament Winding |
| Certification | ISO 9001 / CE / NSF (Optional) |
End Port vs. Side Port - Which Type Should You Choose?
| Feature | End Port Design | Side Port Design |
|---|---|---|
| Installation Space | Compact – ideal for small RO systems | Requires side clearance – better for large systems |
| Maintenance Access | Direct membrane removal | Convenient for inline maintenance |
| Flow Direction | Straight-through, minimal loss | Flexible for multi-vessel piping |
| Application | Compact RO units, commercial use | Industrial/multi-stage RO plant |
💡 Tip: For large-capacity RO systems (e.g., 4–8 membranes per line), side-port vessels allow easier connection and lower manifold cost.
Why UPVC Is Not Suitable for RO Membrane Housings
Some low-cost RO housings use UPVC material, but it cannot safely handle RO membrane pressure.
| Problem | Explanation |
|---|---|
| Low Pressure Resistance | RO operation requires ≥0.5 MPa; UPVC bursts near 0.45 MPa. |
| Fatigue Damage | Fails under repeated pressure cycling. |
| Thermal Instability | Deforms at >40 °C, causing leaks or rupture. |
| Chemical Weakness | Poor resistance to oxidants and cleaning agents. |
✅ FRP vessels, by contrast, withstand up to 1800 PSI, maintain shape under stress, and last 3–5× longer than UPVC - making them the global standard for industrial RO applications.
Why Choose Our RO Membrane Pressure Vessel
🧩 Universal Fit: Works with DOW, Toray, Hydranautics, and Vontron membranes.
💪 Pressure-Tested Reliability: Hydro-tested at 1.5× working pressure for zero-defect assurance.
🌍 Global Certification: Meets CE / NSF / ISO 9001 quality and export standards.
⚙️ Custom Options: End or side port, ¾"–3" NPT connections, and RAL color customization.
🧴 Anti-UV Coating: Outdoor-grade polyurethane protection for long service life.
Certifications
CE
ASME
EMS
ISO 9001
NSF
Test report
Real Project Case - Pakistan Government Desalination Project
Client: Water Infrastructure Authority, Pakistan
Model Used: 4080 RO FRP Pressure Vessel (4000 units)
Application: Government-funded brackish water desalination and municipal supply project.
System Capacity: 10,000 m³/day
Project Highlights:
- Side Port Design used for compact manifold connection, reducing assembly time by 25%.
- High-Salt Water Compatibility ensured corrosion-free operation under 1200 PSI.
- Local engineering team trained on installation and maintenance, achieving zero vessel failure after 18 months of operation.
💬 "The FRP vessels performed beyond expectation - no pressure loss or corrosion observed. The installation process was smooth, and compatibility with DOW membranes was perfect."
- Project Engineer, Karachi Desalination Plant
Applications
- Brackish and seawater desalination
- Industrial wastewater recovery
- Boiler feedwater & power generation
- Food and beverage filtration
- Pharmaceutical & biotech processes
- Mining & metal processing
- Municipal RO systems
FAQ
Q1: What's the main difference between "pressure vessel" and "membrane housing"?
A: They refer to the same component - a pressure-resistant housing for RO membranes.
Q2: What's the service life?
A: Typically 3–5 years; can reach 8 years with proper pretreatment and cleaning.
Q3: Can you customize the vessel for OEM or local standards?
A: Yes - ANSI, JIS, GB flanges and color/logo customization are all supported.
Q4: Can it be used for hot water?
A: Yes, up to 49 °C, suitable for industrial-grade applications.
Hot Tags: ro membrane pressure vessel, China ro membrane pressure vessel manufacturers, suppliers, factory, membrane housing for drinking water treatment, ready to ship membrane housing, membrane housing for packaging material separation, membrane housing for photovoltaic material separation, membrane housing for colloid separation, membrane housing for ketone separation
Previous
FRP HousingNext
RO FRP VesselYou Might Also Like
Send Inquiry