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4021 Size Reverse Osmosis Membrane Element 1000 GPD with 99.3% Salt Rejection Compact RO Element
Product Details:
| Place of Origin: | Guangdong, China |
| Brand Name: | FILTERPRO |
| Certification: | ISO 9001:2015 |
| Model Number: | FP-4021-RO |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1 Piece |
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| Price: | USD 35-75 / Piece |
| Packaging Details: | Vacuum sealed individual packaging in protective carton with preservative solution |
| Delivery Time: | 2-3 working days for stock, 10-15 days for production |
| Payment Terms: | T/T, L/C, PayPal, Western Union |
| Supply Ability: | 15000 Pieces per Month |
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Detail Information |
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| Membrane Element Size: | 4021 (4 Inch X 21 Inch) | Active Membrane Area: | 36 Ft² (3.3 M²) |
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| Permeate Flow Rate: | 1000 GPD (3.8 M³/day) | Stable Salt Rejection Rate: | 99.3% |
| Operating Pressure: | 150 PSI (10.3 Bar) | Membrane Material: | Polyamide Thin-Film Composite |
| Permeate Tube Diameter: | 0.75 Inch | Feed Spacer Thickness: | 28 Mil |
| PH Range: | 2-11 | ||
| Highlight: | 4021 Compact RO Membrane,1000 GPD Industrial Element,4x21 Inch Reverse Osmosis |
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Product Description
The FP-4021-RO is a compact 4021 size reverse osmosis membrane element (4-inch diameter x 21-inch length) engineered for applications where space is at a premium without sacrificing filtration performance. Delivering 1000 GPD of purified water with 99.3% salt rejection, this half-length element is the perfect choice for portable, laboratory, and small-scale industrial RO systems.
- Compact 4021 Form Factor: Half the length of a standard 4040 element, the 4021 size fits into tight spaces and lightweight mobile RO units. Ideal for systems where equipment footprint is a critical design constraint.
- 1000 GPD Industry Standard Output: Meets the most common flow requirement for small RO systems including laboratory water purifiers, dental clinic RO units, and portable field water treatment equipment.
- 99.3% Reliable Salt Rejection: Polyamide thin-film composite membrane delivers consistent desalination performance for brackish water with feed TDS up to 2000 ppm.
- Lightweight Design: At approximately 2.5 kg per element, the 4021 form factor enables easy handling, installation, and replacement by a single technician.
- Universal Compatibility: Fits all standard 4021 membrane housings with 0.75-inch permeate tube connection, ensuring broad compatibility with existing systems from multiple manufacturers.
| Parameter | Value |
|---|---|
| Membrane Element Size | 4021 (4" x 21") |
| Active Membrane Area | 36 ft² (3.3 m²) |
| Permeate Flow Rate | 1,000 GPD (3.8 m³/day) |
| Stable Salt Rejection | 99.3% |
| Operating Pressure | 150 PSI (10.3 bar) |
| Max Operating Pressure | 300 PSI (20.7 bar) |
| Membrane Material | Polyamide TFC |
| Permeate Tube Diameter | 0.75" (19 mm) |
| Feed Spacer Thickness | 28 mil |
| pH Range (Continuous) | 2-11 |
| Max Feed Temperature | 45°C (113°F) |
| Element Weight (Wet) | Approx. 2.5 kg |
Designed for laboratory water purification systems (Type II/III water), dental and medical clinic RO units, portable field water treatment equipment for military and disaster relief, small commercial ice makers and coffee machines, and vehicle-mounted or shipboard water purification systems. Also suitable for pilot-scale industrial RO testing and process development.
