Authorized CSM RE4040-BE Membrane Distributor in Indonesia
PT Watermart Perkasa is an authorized CSM RE4040-BE Membrane distributor in Indonesia, supplying original products for industrial, commercial, and public-facility water treatment applications.
We maintain substantial stocks of CSM RO Membrane RE4040-BE elements and deliver to Jakarta, Tangerang, Bekasi, Bandung, Surabaya, Semarang, Medan, Makassar, Kalimantan, Bali, and other regions throughout Indonesia.
CSM RO Membrane RE4040-BE for Brackish-Water Treatment
The CSM RO Membrane RE4040-BE is a 4-inch reverse osmosis membrane designed specifically for brackish water.
It offers high productivity, stable salt rejection, a large active membrane area, and spiral-wound construction with an FRP outer wrap. These characteristics make the RE4040-BE suitable for industrial and commercial RO systems that require consistent product-water quality.
With nominal permeate production of up to 2,400 GPD, or approximately 9.1 m³ per day, the CSM RE4040-BE can support clean-water production, process water, boiler feedwater, and preliminary industrial-water purification.
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CSM RO Membrane RE4040-BE Specifications
| Parameter | Specification |
|---|---|
| Model | CSM RE4040-BE |
| Application | Brackish Water Reverse Osmosis |
| Membrane type | Thin-Film Composite (TFC) |
| Membrane material | Polyamide (PA) |
| Element configuration | Spiral-wound with FRP outer wrap |
| Nominal permeate capacity | 2,400 GPD or 9.1 m³ per day |
| Nominal salt rejection | 99.7% |
| Minimum salt rejection | 99.4% |
| Effective membrane area | 85 ft² or 7.9 m² |
| Pressure vessel size | Nominal 4-inch I.D. |
| Manufacturer | Toray Advanced Materials Korea Inc. |
The permeate capacity and salt-rejection values above are based on standard test conditions. Actual performance may vary according to feedwater quality, temperature, operating pressure, recovery, membrane age, pretreatment condition, and RO system configuration.
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RE4040-BE Physical Dimensions
| Dimension | Value |
|---|---|
| Element length | 40 inches or 1,016 mm |
| Element diameter | 3.9 inches or 99 mm |
| Permeate tube diameter | 0.75 inch or 19.1 mm |
| D/E dimension | 1.05 inches or 26.7 mm |
| Vessel compatibility | Nominal 4-inch I.D. pressure vessel |
Each element may be supplied with an interconnector and O-ring according to the product configuration. It is designed for installation in a standard RO pressure vessel with a nominal 4-inch internal diameter.
CSM RE4040-BE Operating Limits
| Operating Parameter | Maximum Limit or Range |
|---|---|
| Maximum operating pressure | 600 psi or 4.14 MPa |
| Maximum pressure drop per element | 15 psi or 0.10 MPa |
| Maximum pressure drop per 240-inch vessel | 60 psi or 0.41 MPa |
| Maximum feed flow | 18 gpm or 4.09 m³/hour |
| Minimum concentrate flow | 4 gpm or 0.91 m³/hour |
| Maximum operating temperature | 45°C |
| Operating pH range | 2.0–11.0 |
| CIP pH range | 1.0–13.0 |
| Maximum turbidity | 1.0 NTU |
| Maximum SDI | 5.0 |
| Maximum chlorine concentration | Less than 0.1 mg/L |
The membrane must be operated within the recommended technical limits. Proper pretreatment is essential to reduce scaling, fouling, plugging, oxidation, and loss of permeate capacity.
Download the CSM RE4040-BE Datasheet
Industries That Can Use the CSM RE4040-BE
| Industry | Example Application |
|---|---|
| Food and beverage | Ingredient water, process water, washing, and beverage production |
| Pharmaceutical | Pretreatment before EDI, mixed bed, distillation, or advanced purification |
| Hospitals and healthcare | RO water for utility and selected process requirements |
| Chemical | Demineralized water, solvent water, and process water |
| Electronics | Preliminary ultrapure-water production before advanced purification |
| Cosmetics | Process water for lotions, toners, liquid soap, and personal-care products |
| Bottled drinking water | TDS reduction and raw-water purification |
| Boiler and cooling systems | Feedwater treatment to help reduce scaling and deposits |
| Hotels and commercial buildings | Water for utilities, laundry, kitchens, and operations |
| Municipal water treatment | Clean-water production from low- to medium-salinity sources |
The CSM RE4040-BE is not a seawater RO membrane. High-salinity seawater desalination requires a dedicated SWRO membrane and a system designed for the appropriate operating pressure.
High Productivity up to 2,400 GPD
The CSM RE4040-BE offers nominal permeate capacity of up to 2,400 GPD, or approximately 9,100 liters per day, under standard test conditions.
This productivity helps commercial RO systems, drinking-water depots, factories, buildings, hospitals, hotels, and industrial facilities produce a large volume of treated water using a compact element.
Actual production may differ from nominal capacity. Water temperature, pump pressure, feedwater TDS, recovery, fouling, and membrane age all affect permeate flow.
Nominal Salt Rejection of 99.7%
Nominal salt rejection of up to 99.7% helps reduce dissolved ions and Total Dissolved Solids (TDS). The feedwater is driven across a semipermeable membrane; most dissolved salts, minerals, and contaminants are retained in the concentrate stream while product water passes through as permeate.
Final water quality depends on feedwater quality, operating pressure, system design, membrane quantity, recovery, and pretreatment performance.

CSM RE4040-BE RO Membrane Advantages
1. Effective Membrane Area of 7.9 m²
The large active area supports high permeate productivity in a compact element.
2. Spiral-Wound Configuration
The spiral-wound configuration efficiently packages the membrane surface within an element approximately four inches in diameter.
3. FRP Outer Wrap
The Fiber Reinforced Plastic outer wrap provides structural strength for use in high-pressure RO systems.
4. High Salt Rejection
Nominal salt rejection of 99.7% helps produce lower-TDS water for many industrial processes.
5. Wide CIP pH Range
The CIP pH range of 1.0–13.0 offers cleaning flexibility, provided the chemicals are compatible with the polyamide membrane and system components.
6. Standard Pressure Vessel Compatibility
The element fits a nominal 4-inch I.D. pressure vessel, making integration into new and existing compatible RO systems easier.
7. Wet or Dry Supply Options
Elements may be supplied according to the applicable type and storage procedure. Once wetted, an element must be kept moist.
8. Industrial and Municipal Applications
The membrane supports brackish-water treatment, industrial process water, building utilities, and municipal water treatment.
Food and Beverage Water-Treatment Solution
Water quality can affect the taste, color, stability, hygiene, and consistency of food and beverage products. The CSM RE4040-BE helps lower dissolved salts and minerals before water is used as an ingredient or process utility.
An RO system may be combined with multimedia filtration, activated carbon, water softening, cartridge filtration, UV sterilization, and other disinfection processes. Pretreatment must be selected from feedwater analysis, especially when iron, manganese, hardness, silica, organic matter, or suspended solids are high.

Healthcare and Pharmaceutical Applications
In healthcare facilities and pharmaceutical plants, reverse osmosis may serve as one stage of a broader water-purification system. RO permeate can be processed further using EDI, mixed-bed ion exchange, ultrafiltration, distillation, UV, or other technologies.
Using a CSM RE4040-BE does not automatically produce Water for Injection or water that meets a specific pharmaceutical standard. The complete system must be designed, validated, operated, and monitored according to applicable requirements.

Operational Efficiency and Controlled Costs
Selecting the right membrane helps maintain RO productivity and reduce element replacement frequency. Long-term performance also depends on:
- Feedwater quality and pretreatment effectiveness.
- Antiscalant dosage, pressure, and system recovery.
- Free chlorine control and microbiological management.
- Flushing and CIP schedules.
- Storage practices and operating-data records.
Routine monitoring of pressure, permeate flow, concentrate flow, conductivity, TDS, differential pressure, and salt rejection helps identify performance deterioration early.
Handling and Storage Guidelines
- Store the membrane at approximately 7–32°C.
- Keep it away from direct sunlight.
- Do not open the package until installation.
- Once wetted, keep the element moist.
- Avoid sudden pressure and flow surges.
- Use chemicals compatible with polyamide membranes.
- Discard permeate produced during the first hour of operation.
- Follow appropriate flushing and commissioning procedures.
- Avoid excessive exposure to free chlorine.
- Wear suitable personal protective equipment when handling the FRP wrap.
Salt rejection requires time to stabilize. Dry elements may take longer to stabilize than elements supplied wet.
Why Buy the CSM RE4040-BE from Watermart?
Original Product and Ready Stock
PT Watermart Perkasa supplies original CSM RO Membrane RE4040-BE elements with substantial inventory for membrane replacement, new systems, and project requirements.
Nationwide Delivery
We deliver to cities and industrial areas throughout Indonesia.
Technical Consultation
The Watermart team can help evaluate capacity, feedwater type, pressure vessel size, membrane configuration, and pretreatment requirements.

Ready Stock for Delivery throughout Indonesia
PT Watermart Perkasa maintains substantial ready stock of CSM RO Membrane RE4040-BE elements. Contact us for current pricing and availability, project quotations, intercity and inter-island delivery, membrane replacement, pressure-vessel selection, feedwater evaluation, pretreatment recommendations, and CIP requirements.
Contact PT Watermart Perkasa
Ask for CSM RE4040-BE Pricing via WhatsApp →
Telephone: +62 21 316 1671
WhatsApp: +62 815 8609 3500
Email: sales@water.co.id
Website: water.co.id
Frequently Asked Questions about the CSM RE4040-BE
Can the CSM RE4040-BE be used for seawater?
No. The RE4040-BE is designed for brackish water. Seawater desalination requires an SWRO membrane designed for higher salinity and operating pressure.
What is the production capacity of the CSM RE4040-BE?
Its nominal permeate capacity is 2,400 GPD, or approximately 9.1 m³ per day, under standard test conditions. Actual capacity varies with system conditions.
Is it suitable for a 4-inch pressure vessel?
Yes. Its physical diameter is approximately 3.9 inches and it is designed for a nominal 4-inch I.D. pressure vessel.
What is its salt rejection?
Nominal salt rejection is 99.7%, with a minimum value of 99.4% under the specified product test conditions.
Is the membrane resistant to chlorine?
Polyamide is sensitive to oxidation. Chlorine in the feedwater must remain below the recommended limit. Activated carbon or sodium metabisulfite may be used for dechlorination according to the system design.
When should the membrane be cleaned?
CIP may be considered when normalized permeate capacity falls, differential pressure rises, or salt passage increases significantly from the baseline.
Does Watermart deliver outside Java?
Yes. PT Watermart Perkasa delivers CSM RE4040-BE membranes and other water-treatment products throughout Indonesia.