Pallas LP 4040 4" x 40" Reverse Osmosis Membrane Element
Technical Resources
Technical Resources
Pallas LP 4040 4" x 40" Reverse Osmosis Membrane Element
Pallas LP 4040 4" x 40" Reverse Osmosis Membrane Element
The Pallas LP 4040 is a premium-quality 4" x 40" reverse osmosis membrane element designed to deliver outstanding water purification performance while operating at low pressure. Suitable for commercial and industrial RO systems, the LP 4040 provides excellent permeate flow, high salt rejection and dependable long-term operation.
Manufactured to fit standard 4040 membrane housings, the LP 4040 is an ideal replacement membrane for a wide range of reverse osmosis systems used in drinking water, process water and light industrial applications.
High Performance Water Purification
Designed for efficiency and reliability, the Pallas LP 4040 produces up to 10.2 m³/day (2,700 GPD) while achieving a stable salt rejection of 99.5%, helping to produce consistently high-quality purified water.
Its low-pressure design reduces operating costs without compromising membrane performance.
Key Features
- 4" x 40" industry standard membrane element
- High production capacity of 2,700 GPD (10.2 m³/day)
- Stable 99.5% salt rejection
- Minimum 99.2% salt rejection
- Low-pressure operation for improved energy efficiency
- Compatible with most standard 4040 RO membrane housings
- Ideal for commercial and industrial reverse osmosis systems
- Durable polyamide thin-film composite membrane
- Reliable long service life with proper maintenance
Typical Applications
The LP 4040 membrane is suitable for:
- Commercial water treatment
- Industrial process water
- Food and beverage production
- Hospitality
- Agriculture
- Car wash systems
- Laboratory water purification
- Drinking water production
- Pre-treatment for deionisation systems
Technical Specifications
| Specification | Value |
|---|---|
| Product | Pallas LP 4040 |
| Membrane Size | 4" x 40" |
| Permeate Flow | 10.2 m³/day (2,700 GPD) |
| Stable Salt Rejection | 99.5% |
| Minimum Salt Rejection | 99.2% |
| Active Membrane Area | 8.7 m² (94 ft²) |
| Feed Spacer | 28 mil |
| Maximum Operating Pressure | 600 psi |
| Maximum Operating Temperature | 45°C |
| Feed Water Flow | 3.6 m³/h |
| Operating pH Range | 2–11 |
| Cleaning pH Range | 1–13 |
| Maximum Pressure Drop | 15 psi |
| Maximum SDI | 5 |
| Residual Chlorine Tolerance | <0.1 ppm |
Standard Test Conditions
Performance data is based on the following test conditions:
- Feed water: 2,000 ppm NaCl
- Pressure: 150 psi
- Temperature: 25°C
- pH: 7–8
- Recovery: 15%
Why Choose the Pallas LP 4040?
The Pallas LP 4040 offers an excellent balance of performance, reliability and value. Its high rejection rate helps protect downstream equipment while producing high-purity water, and its low-pressure design can help reduce energy consumption compared with conventional RO membranes.
Whether you're replacing an existing LP 4040 membrane or building a new reverse osmosis system, the Pallas LP 4040 delivers dependable performance for demanding water treatment applications.
Frequently Asked Questions
What housing does the LP 4040 fit?
The Pallas LP 4040 fits all standard 4" x 40" reverse osmosis membrane housings.
What does LP mean?
LP stands for Low Pressure, meaning the membrane is engineered to deliver high water production and excellent salt rejection while operating at lower feed pressures.
How much water does the LP 4040 produce?
Under standard test conditions, the membrane produces up to 2,700 gallons per day (10.2 m³/day). Actual output will vary depending on feed water quality, temperature and operating pressure.
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