FRP Housing

2540/4040/8040 FRP Membrane Housing 300-1200PSI | ISO Certified for RO Water Treatment

Why choose our FRP housing?

✅ High-pressure safety design: 1.2-1.5 times design pressure test (such as 300PSI model test pressure 450PSI), 6 times design pressure burst test. 100,000 times fatigue test to ensure long-term high-pressure operation safety.
✅ Adapt to international standard membrane elements: compatible with Dow, Hydranautics, Toray, CSM and other brand membrane elements, support 1-8 core flexible configuration.
✅ Acid and alkali corrosion resistance: working pH range 3-11, clean pH range 2-12, long-term tolerance to complex water quality such as seawater and industrial wastewater.
✅ 5-year warranty + free accessories: provide membrane shell end, sealing ring and other accessories, after-sales response ≤ 2 hours, support customized color/port.

 

Application Scenario

📌 Industrial water treatment: Suitable for high-purity water preparation in the chemical, electronic, and pharmaceutical industries. The 8040 side-opening membrane shell (600PSI) can meet the water production demand of 10m³/h.
📌 Seawater desalination: 8-inch end-opening membrane shell (800-1200PSI), the end cover sealing structure is optimized to avoid high-pressure leakage, and has been used in ship and island desalination projects.
📌 Municipal water supply: 4-inch membrane shell (300PSI) is suitable for small and medium-sized RO systems, supports 1-4 core configurations, and reduces the land cost of municipal water treatment equipment.

 

FRP housing production process: (Video)

 

Technical specifications

Basic model parameters

Model	Diameter	Operating Pressure	Port Design	Number of Membrane Elements	Operating Temperature	Operating pH	Applicable Scenarios
4040	4 inches	300-600PSI	End opening/side opening	4040 ro membrane, 1-4 pcs	-7℃-49℃	3-11	Municipal water supply, small RO
8040	8 inches	300-1200PSI	End opening/side opening	8040 ro membrane, 1-8 pcs	-7℃-49℃	3-11	Industrial wastewater, seawater desalination
2540	2.5 inches	300-1000PSI	End opening	2540 ro membrane, 1-2 pcs	-7℃-49℃	3-11	Household/commercial water purifier

 

Limited Use Parameters (Applicable to all models)

Material	Fiberglass and epoxy
Connection Type	end port and side port
Operating Temperature	-10C°-49C°
Process	Winded
Working Pressure	150-1200psi
Cleaning PH range	2~12 (≤30mins)
Operating PH range	3~11

 

 

Core Advantages

🔍 Precision technology, leading performance

• Microcomputer-controlled winding molding: glass fiber and epoxy resin are wound in the optimal ratio, the inner wall is smooth without dead corners, and the wear of membrane elements is reduced.
• Low thermal conductivity: 0.15-1.36W/(m·k), only 1/200 of metal, reducing the impact of temperature fluctuations on membrane performance.

✅ Easy installation and maintenance

• Quick-release end cap design: NPTF threaded interface, with special disassembly tools, the replacement time of membrane elements is shortened by 50%.
• Complete accessories: including half-moon locking plate, ABS sealing plate, O-ring, etc., support fast on-site assembly.

🌍 Trusted by global customers

• Case reference: A seawater desalination project uses 8040 side-opening membrane shell (800PSI), which has been running continuously for 2 years without failure, and the water quality of the produced water has been stable and up to standard.
• Customer evaluation: "We ordered over 1,500 of these filters and each time they are exactly what we needed. Working with Ink-Blue has made the process so easy."

 

 

FAQ

Q1: What is the working pressure range of the FRP membrane housing?

A: It supports 300PSI (conventional) to 1200PSI (high pressure). The specific selection needs to be based on the application scenario. For example, the 800-1200PSI model is recommended for seawater desalination.

 

Q2: How to choose the appropriate membrane housing size (4-inch/8-inch)?

A: The 4-inch membrane shell is suitable for small systems with a water output of <5m³/h, and the 8-inch membrane shell is suitable for medium and large systems with a water output of >5m³/h. You can consult customer service for a customized water quality report.

 

Q3: What is the temperature resistance range of the membrane housing? Will it freeze and crack?

A: The working temperature is -7℃-49℃. Insulation measures must be taken below -7℃ to avoid damage caused by internal ice expansion.

 

Q4: Does it support side-opening/end-opening port customization?

A: Yes! The side-opening port is easy to maintain, and the end-opening port is suitable for space-constrained scenarios. The NPT/BSP interface size can be customized.

 

Q5: How long is the warranty period? What should I do if there is a leak?

A: The warranty period is 5 years. If there is leakage due to quality problems, we will reissue the accessories free of charge and provide technical guidance. If there is man-made damage, you can purchase original accessories for repair.

 

 

Trust Guarantee

📜 ISO9001 certification: full process quality control, each membrane shell has a unique number for traceability.
📞 Technical support: installation videos and maintenance manuals are provided, and engineers are online 24/7 to answer technical questions.

 

Note: All data are based on 2025 industry standards and actual test results, and specific parameters are subject to the order contract.

 

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