Factory Price 4040 4021 8040 Ss RO Reverse Osmosis Membrane Shell SUS 304 316L Housing for Water Treatment Plant

Material and Structural Composition of RO Membrane Housings

1. Housing Materials

RO membrane housings are primarily constructed from:

• SUS304 stainless steel (standard grade)
• 316/316L stainless steel (enhanced corrosion resistance for harsh environments)

Key Properties:
✔ Excellent corrosion resistance,High tensile strength (withstands 2.0-2.5MPa operating pressure),Mirror-finished surfaces (inner/outer) for reduced friction loss

2. Manufacturing Methods

Type	Production Process	Advantages
Seamless	Drawn from forged blanks	Uniform wall thickness, <0.5% leakage rate
Welded	Automated orbital welding	Cost-effective, smooth weld seams (Ra≤0.8μm)

⚠ Critical Note: Seamless designs are mandatory for >2.2MPa applications.

Specifications & Configurations

Standard Series

Model	Membrane Count	Flow Capacity
1-Series	Single element	50-100 GPD
2-Series	Dual elements	200-400 GPD
4-Series	Quad elements	800-1,200 GPD

Model	Dia	Length	Inlet	Outlet	Pressure
BSD-2514	2.5”	14”	1/4”	1/4”	400psi
BSD-2521	2.5”	21”	3/8”	3/8”	400psi
BSD-2540	2.5”	40”	3/8”	3/8”	400psi
BSD-4014	4.0”	14”	1/2”	1/2”	400psi
BSD-4021	4.0”	21”	3/4”	1/2”	400psi
BSD-4040	4.0”	40”	3/4”	1/2”	400psi
BSD-4080	4.0”	80”	3/4”	1/2”	400psi
BSD-40120	4.0”	120”	3/4”	1/2”	400psi
BSD-40160	4.0”	160”	3/4”	1/2”	400psi
BSD-8040	8.0”	40”	1.1/2”	1”	1000psi
BSD-8080	8.0”	80”	1.1/2”	1”	1000psi
BSD-80120	8.0”	120”	1.1/2”	1”	1000psi
BSD-80160	8.0”	160”	1.1/2”	1”	1000psi
BSD-80200	8.0”	200”	1.1/2”	1”	1000psi
BSD-80240	8.0”	240”	1.1/2”	1”	1000psi

Connection Options

• Port Types:
  • Side ports (6″x4″ or 4″x4″)
  • End ports (2″ NPT standard)
• Pressure Ratings:
  • Standard: 2.0MPa
  • High-pressure: 2.5MPa (seamless only)

How to Choose the Right RO Membrane Housing for Your System

Selecting the correct RO membrane housing starts with knowing your membrane size. The 4040 housing fits 4-inch diameter membranes. The 8040 housing fits 8-inch membranes. These are the two most common industrial sizes. Match the housing length to your membrane element length. A BSD-4040 holds one 40-inch element. A BSD-4080 holds two 40-inch elements in series.

Pressure rating is the next key factor. Standard applications run at 2.0 MPa. High-pressure seawater systems need 2.5 MPa seamless housings. Never use a welded housing above 2.2 MPa. The burst pressure is rated at 4.0 MPa minimum. This gives a 3x safety factor for reliable operation.

Material selection depends on your water source. SUS 304 stainless steel suits standard brackish water applications. SUS 316L works better for seawater and chemical environments. It offers superior corrosion resistance. Therefore, always specify your feed water chemistry before ordering. The right RO system membrane housing protects your membrane elements for years. Furthermore, the correct housing membrane RO selection reduces maintenance costs significantly. For the matching membrane elements, browse our full range of RO membranes. Pairing the right membrane with the right housing ensures peak system performance. Moreover, a compatible RO membrane housing from our range ensures correct sealing and pressure ratings are maintained at all times.

Technical Features

1. Pressure Performance

• Operating range: 2.0-2.5MPa
• Burst pressure: ≥4.0MPa (3x safety factor)
• Validated by ASME Section VIII pressure tests

2. Structural Advantages

✔ Quick-connect design (clamp/card/spring-lock variants),Tool-free disassembly (<2 minutes for maintenance)
✔ Dual inlet options:End-side (compact spaces),Parallel-side (high-flow systems)

3. Quality Assurance

• 100% hydrostatic tested (1.5x working pressure),Eddy current inspected for weld integrity,Certificate: ISO 9001, NSF/ANSI 61

RO Membrane and Housing: Building a Complete RO Treatment System

The RO membrane and housing work together as one unit. The housing protects the membrane from physical damage. It also contains operating pressure during filtration. A mismatched housing causes membrane bypass or seal failure. Therefore, always source your membrane housing RO and membrane elements from compatible specifications.

A complete RO water treatment system needs more than just membranes and housings. Pre-filtration protects membranes from fouling. Sediment filters remove particles before they reach the membrane. Carbon filters remove chlorine that damages the membrane surface. Post-treatment polishes the permeate to final quality standards. Each stage depends on the one before it. Therefore, system design matters as much as component quality.

For large-scale industrial setups, multiple RO membrane housings are arranged in arrays. Feed water flows through each housing in sequence. Rejection rates improve with each pass. A properly designed commercial RO system uses these housing arrays to meet high daily output demands. Furthermore, treated water needs proper storage after the RO stage. A quality stainless steel water tank prevents recontamination of purified water. It maintains the water quality achieved by the membrane system. Together, the housing membrane RO setup and proper storage form a complete, reliable water treatment solution.